マルチサイト環境でのEVPN/VxLANのトラブルシューティング

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Updated: 2022 年 10 月 17 日
Document ID:215780

偏向のない言語

この製品のドキュメントセットは、偏向のない言語を使用するように配慮されています。このドキュメントセットでの偏向のない言語とは、年齢、障害、性別、人種的アイデンティティ、民族的アイデンティティ、性的指向、社会経済的地位、およびインターセクショナリティに基づく差別を意味しない言語として定義されています。製品ソフトウェアのユーザインターフェイスにハードコードされている言語、RFP のドキュメントに基づいて使用されている言語、または参照されているサードパーティ製品で使用されている言語によりドキュメントに例外が存在する場合があります。シスコのインクルーシブ ランゲージの取り組みの詳細は、こちらをご覧ください。

翻訳について

シスコは世界中のユーザにそれぞれの言語でサポート コンテンツを提供するために、機械と人による翻訳を組み合わせて、本ドキュメントを翻訳しています。ただし、最高度の機械翻訳であっても、専門家による翻訳のような正確性は確保されません。シスコは、これら翻訳の正確性について法的責任を負いません。原典である英語版（リンクからアクセス可能）もあわせて参照することを推奨します。

    概要

    このドキュメントでは、マルチサイト環境でイーサネットVPN/仮想拡張LAN(EVPN/VxLAN)をトラブルシューティングする方法について説明します。

    前提条件

    要件

    次の項目に関する知識があることが推奨されます。

    • マルチプロトコルラベルスイッチング(MPLS)レイヤ3 VPN
    • Multiprotocol-Border Gateway Protocol(MP-BGP)
    • EVPN

    使用するコンポーネント

    このドキュメントの情報は、次のソフトウェアとハードウェアのバージョンに基づいています。

     leaf1# N5K-C5672UP-16G-SUP システム：バージョン7.3(0)N1(1)
     leaf2#  N9K-C92160YC-X NXOS：バージョン9.2(3)
     spine1# N9K-C9396PX NXOS：バージョン9.2(3)
     spine2#  N9K-C9396PX NXOS：バージョン9.2(3)
     MultisiteBG1# N9K-C93108TC-EX  NXOS：バージョン9.2(3)
     MultisiteBG2# N9K-C93108TC-FX  NXOS：バージョン9.3(1)
     multisitespine2# N9K-C9372TX-E NXOS：バージョン9.2(3)
     Multistesine1# N9K-C92160YC-X NXOS：バージョン9.2(3)
     MultisteLeaf1# N9K-C93108TC-EX NXOS：バージョン7.0(3)I7(5)

    このドキュメントの情報は、特定のラボ環境にあるデバイスに基づいて作成されました。このドキュメントで使用するすべてのデバイスは、初期（デフォルト）設定の状態から起動しています。本稼働中のネットワークでは、各コマンドによって起こる可能性がある影響を十分確認してください。

    トポロジ

    Topology

    このドキュメントでは、トラフィックの発信元(DC-1、Host1/2 - 172.20.2.10/11)を示し、パケットを使用して宛先DC-2、Host4(172.20.2.100)まで移動します。

    コントロールプレーンの検証

    トラフィック フロー: Control-Plane_Traffic_Flow_v4ステップ 1：送信元ノードで正しいIP、VLANを確認します。

    ToLeaf1#show ip interface brief | exclude down

Interface              IP-Address      OK? Method Status                Protocol

Vlan1000               172.20.2.10        YES NVRAM  up                    up     

Vlan1001               172.21.1.10        YES NVRAM  up                    up     

GigabitEthernet1/0/1   unassigned      YES unset  up                    up     



ToLeaf1#

     これで、送信元ノードからVlan-1000のSVI-GWへの到達可能性が確保されました。

    ToLeaf1#ping 172.20.2.1

Type escape sequence to abort.

Sending 5, 100-byte ICMP Echos to 172.20.2.1, timeout is 2 seconds:

!!!!!

Success rate is 100 percent (5/5), round-trip min/avg/max = 1/205/1006 ms

ToLeaf1#

    ステップ 2：最初のホップであるleaf1に移動し、レイヤ2およびレイヤ3レベルで状況を確認します。

    次に、leaf1がmacを学習するか、arpを送信元ノードから学習するかを確認します。

    はい。送信元ノードのMACアドレス(0035.1ac1.37c2)、IP 172.20.2.10は、Vlan1000を介してeth1/23で学習されます。

    leaf1#show mac address-table

Legend:

        * - primary entry, G - Gateway MAC, (R) - Routed MAC, O - Overlay MAC

        age - seconds since last seen,+ - primary entry using vPC Peer-Link

   VLAN     MAC Address      Type      age     Secure NTFY   Ports/SWID.SSID.LID

---------+-----------------+--------+---------+------+----+------------------

* 1001     0000.2222.3333    static    0          F    F  sup-eth2

* 1001     0035.1ac1.37c3    dynamic   500        F    F  Eth1/23

* 1001     005d.738e.a337    static    0          F    F  nve1/10.111.111.2

* 1001     00c8.8bf9.5f42    dynamic   0          F    F  nve1/10.111.111.2

* 1001     6cb2.ae91.38bf    static    0          F    F  nve1/10.200.200.22

* 1001     e0d1.73a4.1d42    dynamic   0          F    F  nve1/192.168.1.4

* 1000     0000.2222.3333    static    0          F    F  sup-eth2

* 1000     0035.1ac1.37c2    dynamic   70         F    F  Eth1/23

* 1000     005d.738e.a337    static    0          F    F  nve1/10.111.111.2

* 1000     00c8.8bf9.5f41    dynamic   0          F    F  nve1/10.111.111.2

* 1000     6cb2.ae91.38bf    static    0          F    F  nve1/10.200.200.22

* 1000     e0d1.73a4.1d41    dynamic   0          F    F  nve1/192.168.1.4

leaf1#

    ソースリーフのARPテーブルの確認

    leaf1#show ip arp vrf all



Flags: * - Adjacencies learnt on non-active FHRP router

       + - Adjacencies synced via CFSoE

       # - Adjacencies Throttled for Glean

       D - Static Adjacencies attached to down interface



IP ARP Table for all contexts

Total number of entries: 5

Address         Age       MAC Address     Interface

172.21.1.10        00:08:14  0035.1ac1.37c3  Vlan1001       

172.20.2.10        00:00:58  0035.1ac1.37c2  Vlan1000       

10.31.121.1     00:08:14  2c31.24b0.bf46  mgmt0          

172.16.1.1      00:07:51  0081.c41c.f007  Ethernet2/23   

172.16.2.1      00:08:14  cc46.d68f.d74b  Ethernet2/24   

leaf1#

    これは、leaf1が送信元ノードのIP/macエントリを作成するためのメッセージを取得する方法を示しています。

    leaf1#show system internal l2rib event-history mac | i 0035.1ac1.37c2 | be create

[04/24/20 13:10:09.721 UTC 6 4173] (1000,0035.1ac1.37c2,3):MAC route created with seq num:0, flags:L (), soo:0, peerid:0

[04/24/20 13:10:09.732 UTC c 4173] (1000,0035.1ac1.37c2,3):Encoding MAC best route (ADD, client id 4)

[04/24/20 13:10:09.871 UTC e 4173] (1000,0035.1ac1.37c2):Bound MAC-IP(172.20.2.10) to MAC, Total MAC-IP linked: 1

[04/24/20 13:10:42.651 UTC 1a 4173] Received MAC ROUTE msg: addr: (1000-0035.1ac1.37c2) vni: 0 admin_dist: 0 seq_num: 0 rt_flags: L soo: 0 dg_count: 0 res: 0 esi: (F) nh_count: 1

[04/24/20 13:10:42.651 UTC 1c 4173] (1000,0035.1ac1.37c2):Mobility check for new rte from prod: 3

[04/24/20 13:10:42.651 UTC 1d 4173] (1000,0035.1ac1.37c2):Current non-del-pending route local:yes, remote:no, linked mac-ip count:1

[04/24/20 13:10:42.651 UTC 1e 4173] (1000,0035.1ac1.37c2):Mobility type: local-to-local; New route SOO: 0, Seq num: 0; Existing route SOO: 0, Seq num: 0

[04/24/20 13:10:42.651 UTC 1f 4173] (1000,0035.1ac1.37c2):Local Update, Add to DB

[04/24/20 13:10:42.651 UTC 20 4173] (1000,0035.1ac1.37c2,3):Using seq number from Recv-based route

<........snipped for brevity...........>

leaf1#

    leaf1でのmac/IPエントリの作成方法を確認すると、これはmac/mac-ip情報がBGPと関連付けられ、l2vpn/evpnルートとしてアドバタイズされる重要な観察ポイントの1つになります。

    leaf1#show bgp l2vpn evpn 0035.1ac1.37c2

Route Distinguisher: 192.168.1.3:33767    (L2VNI 2001002)

BGP routing table entry for [2]:[0]:[0]:[48]:[0035.1ac1.37c2]:[0]:[0.0.0.0]/216, version 99

Paths: (1 available, best #1)

Flags: (0x00010a) on xmit-list, is not in l2rib/evpn



  Advertised path-id 1

  Path type: local, path is valid, is best path

  AS-Path: NONE, path locally originated

    192.168.1.3 (metric 0) from 0.0.0.0 (192.168.1.3)

      Origin IGP, MED not set, localpref 100, weight 32768

      Received label 2001002

      Extcommunity:

          RT:200:2001002



  Path-id 1 advertised to peers:  <<<<<<<<<<<<<<<<< Here we see MAC address is advertised as mac-only route to its SPINE peers

    192.168.1.1        192.168.1.2   

BGP routing table entry for [2]:[0]:[0]:[48]:[0035.1ac1.37c2]:[32]:[172.20.2.10]/272, version 4

Paths: (1 available, best #1)

Flags: (0x00010a) on xmit-list, is not in l2rib/evpn



  Advertised path-id 1

  Path type: local, path is valid, is best path

  AS-Path: NONE, path locally originated

    192.168.1.3 (metric 0) from 0.0.0.0 (192.168.1.3)

      Origin IGP, MED not set, localpref 100, weight 32768

      Received label 2001002 900001

      Extcommunity:

          RT:200:900001

          RT:200:2001002



  Path-id 1 advertised to peers:  <<<<<<<<<<<<<<<<< Here we see MAC address is advertised as mac-IP route to its SPINE peers

    192.168.1.1        192.168.1.2   



leaf1#

    次に、リーフからスパインに至るまで、広告がどのように表示されるかを確認します。

    DC-1 Leaf1からSpine1へのルートの確認

    leaf1#show bgp l2vpn evpn neighbors 192.168.1.1 advertised-routes



Peer 192.168.1.1 routes for address family L2VPN EVPN:

BGP table version is 191, local router ID is 192.168.1.3

Status: s-suppressed, x-deleted, S-stale, d-dampened, h-history, *-valid, >-best

Path type: i-internal, e-external, c-confed, l-local, a-aggregate, r-redist, I-injected

Origin codes: i - IGP, e - EGP, ? - incomplete, | - multipath, & - backup



   Network            Next Hop            Metric     LocPrf     Weight Path

Route Distinguisher: 10.100.100.21:33767



Route Distinguisher: 10.100.100.21:33768



Route Distinguisher: 10.100.100.22:33767



Route Distinguisher: 10.100.100.22:33768



Route Distinguisher: 192.168.1.3:33767    (L2VNI 2001002)

*>l[2]:[0]:[0]:[48]:[0035.1ac1.37c2]:[0]:[0.0.0.0]/216

                      192.168.1.3                       100      32768 i

*>l[2]:[0]:[0]:[48]:[0035.1ac1.37c2]:[32]:[172.20.2.10]/272

                      192.168.1.3                       100      32768 i



Route Distinguisher: 192.168.1.3:33768    (L2VNI 2001001)

*>l[2]:[0]:[0]:[48]:[0035.1ac1.37c3]:[0]:[0.0.0.0]/216

                      192.168.1.3                       100      32768 i

*>l[2]:[0]:[0]:[48]:[0035.1ac1.37c3]:[32]:[172.21.1.10]/272

                      192.168.1.3                       100      32768 i



Route Distinguisher: 192.168.1.4:33767



Route Distinguisher: 192.168.1.4:33768



Route Distinguisher: 192.168.2.4:33767



Route Distinguisher: 192.168.2.4:33768



Route Distinguisher: 192.168.1.3:3    (L3VNI 900001)



leaf1#     

    DC-1 Leaf1からSpine2へのルートの確認

    leaf1#show bgp l2vpn evpn neighbors 192.168.1.2 advertised-routes



Peer 192.168.1.2 routes for address family L2VPN EVPN:

BGP table version is 191, local router ID is 192.168.1.3

Status: s-suppressed, x-deleted, S-stale, d-dampened, h-history, *-valid, >-best

Path type: i-internal, e-external, c-confed, l-local, a-aggregate, r-redist, I-injected

Origin codes: i - IGP, e - EGP, ? - incomplete, | - multipath, & - backup



   Network            Next Hop            Metric     LocPrf     Weight Path

Route Distinguisher: 10.100.100.21:33767



Route Distinguisher: 10.100.100.21:33768



Route Distinguisher: 10.100.100.22:33767



Route Distinguisher: 10.100.100.22:33768



Route Distinguisher: 192.168.1.3:33767    (L2VNI 2001002)

*>l[2]:[0]:[0]:[48]:[0035.1ac1.37c2]:[0]:[0.0.0.0]/216

                      192.168.1.3                       100      32768 i

*>l[2]:[0]:[0]:[48]:[0035.1ac1.37c2]:[32]:[172.20.2.10]/272

                      192.168.1.3                       100      32768 i



Route Distinguisher: 192.168.1.3:33768    (L2VNI 2001001)

*>l[2]:[0]:[0]:[48]:[0035.1ac1.37c3]:[0]:[0.0.0.0]/216

                      192.168.1.3                       100      32768 i

*>l[2]:[0]:[0]:[48]:[0035.1ac1.37c3]:[32]:[172.21.1.10]/272

                      192.168.1.3                       100      32768 i



Route Distinguisher: 192.168.1.4:33767



Route Distinguisher: 192.168.1.4:33768



Route Distinguisher: 192.168.2.4:33767



Route Distinguisher: 192.168.2.4:33768



Route Distinguisher: 192.168.1.3:3    (L3VNI 900001)



leaf1#

     複数のスパインが存在するため、異なるスパインで異なるコマンドをチェックして確認します（ルートアップデートは変更されません）。

    DC-1では、SPINE-1とSPINE-2はLeaf1、Leaf2、およびBGW-1とEVPNネイバーシップを確立します

    spine1#show bgp l2vpn evpn summary

BGP summary information for VRF default, address family L2VPN EVPN

BGP router identifier 192.168.1.1, local AS number 200

BGP table version is 31, L2VPN EVPN config peers 3, capable peers 3

19 network entries and 19 paths using 4256 bytes of memory

BGP attribute entries [17/2788], BGP AS path entries [1/6]

BGP community entries [0/0], BGP clusterlist entries [0/0]



Neighbor        V    AS MsgRcvd MsgSent   TblVer  InQ OutQ Up/Down  State/PfxRcd

10.100.100.22   4   200   44002   43993       31    0    0     4w2d 11       

192.168.1.3     4   200   43991   43989       31    0    0     4w2d 4        

192.168.1.4     4   200   43996   43992       31    0    0     4w2d 4       

spine1#



spine2#show bgp l2vpn evpn summary

BGP summary information for VRF default, address family L2VPN EVPN

BGP router identifier 192.168.1.2, local AS number 200

BGP table version is 65, L2VPN EVPN config peers 3, capable peers 3

19 network entries and 19 paths using 4256 bytes of memory

BGP attribute entries [17/2788], BGP AS path entries [1/6]

BGP community entries [0/0], BGP clusterlist entries [0/0]



Neighbor        V    AS MsgRcvd MsgSent   TblVer  InQ OutQ Up/Down  State/PfxRcd

10.100.100.22   4   200   47140   47115       65    0    0     4w4d 11       

192.168.1.3     4   200   47115   47112       65    0    0     4w4d 4        

192.168.1.4     4   200   47121   47116       65    0    0     4w4d 4        

spine2#

    ここまでで、スパインレイヤに到達しました。今度は、これがボーダーゲートウェイ(DC-1、BGW-1)に渡されているかどうかを確認します。

    spine2#show bgp l2vpn evpn neighbors 10.100.100.22 advertised-routes



Peer 10.100.100.22 routes for address family L2VPN EVPN:

BGP table version is 65, Local Router ID is 192.168.1.2

Status: s-suppressed, x-deleted, S-stale, d-dampened, h-history, *-valid, >-best

Path type: i-internal, e-external, c-confed, l-local, a-aggregate, r-redist, I-injected

Origin codes: i - IGP, e - EGP, ? - incomplete, | - multipath, & - backup, 2 - best2



   Network            Next Hop            Metric     LocPrf     Weight Path

Route Distinguisher: 10.100.100.21:33767



Route Distinguisher: 10.100.100.21:33768



Route Distinguisher: 10.100.100.22:27001



Route Distinguisher: 10.100.100.22:33767



Route Distinguisher: 10.100.100.22:33768



Route Distinguisher: 192.168.1.3:33767

*>i[2]:[0]:[0]:[48]:[0035.1ac1.37c2]:[0]:[0.0.0.0]/216

                      192.168.1.3                       100          0 i

*>i[2]:[0]:[0]:[48]:[0035.1ac1.37c2]:[32]:[172.20.2.10]/272

                      192.168.1.3                       100          0 i



Route Distinguisher: 192.168.1.3:33768

*>i[2]:[0]:[0]:[48]:[0035.1ac1.37c3]:[0]:[0.0.0.0]/216

                      192.168.1.3                       100          0 i

*>i[2]:[0]:[0]:[48]:[0035.1ac1.37c3]:[32]:[172.21.1.10]/272

                      192.168.1.3                       100          0 i



Route Distinguisher: 192.168.1.4:33767

*>i[2]:[0]:[0]:[48]:[e0d1.73a4.1d41]:[0]:[0.0.0.0]/216

                      192.168.1.4                       100          0 i

*>i[2]:[0]:[0]:[48]:[e0d1.73a4.1d41]:[32]:[172.20.2.11]/272

                      192.168.1.4                       100          0 i



Route Distinguisher: 192.168.1.4:33768

*>i[2]:[0]:[0]:[48]:[e0d1.73a4.1d42]:[0]:[0.0.0.0]/216

                      192.168.1.4                       100          0 i

*>i[2]:[0]:[0]:[48]:[e0d1.73a4.1d42]:[32]:[172.21.1.11]/272

                      192.168.1.4                       100          0 i



Route Distinguisher: 192.168.2.4:33767



Route Distinguisher: 192.168.2.4:33768



spine2#



<<<<<<<<<
     
     
       >>>>>> 
     spine2#show bgp l2vpn evpn neighbors 10.100.100.22 advertised-routes  | i 0035.1ac1.37c2 p 1 n 1

Route Distinguisher: 192.168.1.3:33767

*>i[2]:[0]:[0]:[48]:[0035.1ac1.37c2]:[0]:[0.0.0.0]/216

                      192.168.1.3                       100          0 i

*>i[2]:[0]:[0]:[48]:[0035.1ac1.37c2]:[32]:[172.20.2.10]/272

                      192.168.1.3                       100          0 i

spine2#

    ルートが別のサイトに伝播されるDC-1のBORDERレイヤで確認します。

    その後、BGW-1で交換されるルートのタイプと数を誰と確認できます

    DC-1 BGW-1

    MultisiteBG1#show bgp l2vpn evpn summary

BGP summary information for VRF default, address family L2VPN EVPN

BGP router identifier 10.100.100.22, local AS number 200

BGP table version is 233, L2VPN EVPN config peers 3, capable peers 3

37 network entries and 45 paths using 7296 bytes of memory

BGP attribute entries [37/6068], BGP AS path entries [1/6]

BGP community entries [0/0], BGP clusterlist entries [4/16]



Neighbor        V    AS MsgRcvd MsgSent   TblVer  InQ OutQ Up/Down  State/PfxRcd

10.100.100.21   4   100   47145   47121      233    0    0     4w4d 8        

192.168.1.1     4   200   47153   47125      233    0    0 18:52:35 8        

192.168.1.2     4   200   47139   47119      233    0    0     4w4d 8        



Neighbor        T    AS PfxRcd     Type-2     Type-3     Type-4     Type-5   

10.100.100.21   E   100 8          6          2          0          0        

192.168.1.1     I   200 8          8          0          0          0        

192.168.1.2     I   200 8          8          0          0          0        

MultisiteBG1#


MultisiteBG1#show bgp l2vpn evpn neighbors 10.100.100.21 advertised-routes



Peer 10.100.100.21 routes for address family L2VPN EVPN:

BGP table version is 233, Local Router ID is 10.100.100.22

Status: s-suppressed, x-deleted, S-stale, d-dampened, h-history, *-valid, >-best

Path type: i-internal, e-external, c-confed, l-local, a-aggregate, r-redist, I-injected

Origin codes: i - IGP, e - EGP, ? - incomplete, | - multipath, & - backup, 2 - best2



   Network            Next Hop            Metric     LocPrf     Weight Path

Route Distinguisher: 10.100.100.21:33767



Route Distinguisher: 10.100.100.21:33768



Route Distinguisher: 10.100.100.22:27001   (ES [0300.0000.0000.c800.0309 0])

*>l[4]:[0300.0000.0000.c800.0309]:[32]:[10.200.200.22]/136

                      10.200.200.22                     100      32768 i



Route Distinguisher: 10.100.100.22:33767    (L2VNI 2001002)

*>l[2]:[0]:[0]:[48]:[6cb2.ae91.38bf]:[0]:[0.0.0.0]/216

                      10.200.200.22                     100      32768 i

*>l[3]:[0]:[32]:[10.200.200.22]/88

                      10.200.200.22                     100      32768 i



Route Distinguisher: 10.100.100.22:33768    (L2VNI 2001001)

*>l[2]:[0]:[0]:[48]:[6cb2.ae91.38bf]:[0]:[0.0.0.0]/216

                      10.200.200.22                     100      32768 i

*>l[3]:[0]:[32]:[10.200.200.22]/88

                      10.200.200.22                     100      32768 i



Route Distinguisher: 192.168.1.3:33767

*>i[2]:[0]:[0]:[48]:[0035.1ac1.37c2]:[0]:[0.0.0.0]/216

                      192.168.1.3                       100          0 i

*>i[2]:[0]:[0]:[48]:[0035.1ac1.37c2]:[32]:[172.20.2.10]/272

                      192.168.1.3                       100          0 i



Route Distinguisher: 192.168.1.3:33768

*>i[2]:[0]:[0]:[48]:[0035.1ac1.37c3]:[0]:[0.0.0.0]/216

                      192.168.1.3                       100          0 i

*>i[2]:[0]:[0]:[48]:[0035.1ac1.37c3]:[32]:[172.21.1.10]/272

                      192.168.1.3                       100          0 i



Route Distinguisher: 192.168.1.4:33767

*>i[2]:[0]:[0]:[48]:[e0d1.73a4.1d41]:[0]:[0.0.0.0]/216

                      192.168.1.4                       100          0 i

*>i[2]:[0]:[0]:[48]:[e0d1.73a4.1d41]:[32]:[172.20.2.11]/272

                      192.168.1.4                       100          0 i



Route Distinguisher: 192.168.1.4:33768

*>i[2]:[0]:[0]:[48]:[e0d1.73a4.1d42]:[0]:[0.0.0.0]/216

                      192.168.1.4                       100          0 i

*>i[2]:[0]:[0]:[48]:[e0d1.73a4.1d42]:[32]:[172.21.1.11]/272

                      192.168.1.4                       100          0 i



Route Distinguisher: 192.168.2.4:33767



Route Distinguisher: 192.168.2.4:33768



MultisiteBG1# 




MultisiteBG1#show bgp l2vpn evpn neighbors 10.100.100.21 advertised-routes   | i 0035.1ac1.37c2 p 1 n 1

Route Distinguisher: 192.168.1.3:33767

*>i[2]:[0]:[0]:[48]:[0035.1ac1.37c2]:[0]:[0.0.0.0]/216

                      192.168.1.3                       100          0 i

*>i[2]:[0]:[0]:[48]:[0035.1ac1.37c2]:[32]:[172.20.2.10]/272

                      192.168.1.3                       100          0 i

MultisiteBG1#

    ルートがDC-2/BGW-2で受信されると、接続されているSPINE-1(192.168.2.1)へのルートアドバタイズメントが表示されます

    DC-2 BGW-2

    MultisiteBG2#show bgp l2vpn evpn summary

BGP summary information for VRF default, address family L2VPN EVPN

BGP router identifier 10.100.100.21, local AS number 100

BGP table version is 142, L2VPN EVPN config peers 3, capable peers 2

43 network entries and 43 paths using 7680 bytes of memory

BGP attribute entries [33/5412], BGP AS path entries [1/6]

BGP community entries [0/0], BGP clusterlist entries [1/4]



Neighbor        V    AS MsgRcvd MsgSent   TblVer  InQ OutQ Up/Down  State/PfxRcd

10.100.100.22   4   200   47169   47124      142    0    0     4w4d 12       

192.168.2.1     4   100   47136   47124      142    0    0     4w4d 4        

192.168.2.2     4   100   45969   45963        0    0    0 19:21:40 Idle    



Neighbor        T    AS PfxRcd     Type-2     Type-3     Type-4     Type-5   

10.100.100.22   E   200 12         10         2          0          0        

192.168.2.1     I   100 4          4          0          0          0        

192.168.2.2     I   100 Idle       0          0          0          0        

MultisiteBG2#




MultisiteBG2#show bgp l2vpn evpn neighbors 192.168.2.1 advertised-routes |  i 0035.1ac1.37c2 p 1 n 1

Route Distinguisher: 192.168.1.3:33767

*>e[2]:[0]:[0]:[48]:[0035.1ac1.37c2]:[0]:[0.0.0.0]/216

                      10.111.111.2          2000                     0 200 i

*>e[2]:[0]:[0]:[48]:[0035.1ac1.37c2]:[32]:[172.20.2.10]/272

                      10.111.111.2          2000                     0 200 i

MultisiteBG2#

    ルートは、宛先が接続されているDC-2、Leaf-1にさらにアドバタイズされます。

    DC-2スパインからリーフルートアドバタイズメント

    Multistespine1#show bgp l2vpn evpn summary

BGP summary information for VRF default, address family L2VPN EVPN

BGP router identifier 192.168.2.1, local AS number 100

BGP table version is 50, L2VPN EVPN config peers 3, capable peers 2

19 network entries and 19 paths using 4256 bytes of memory

BGP attribute entries [15/2460], BGP AS path entries [1/6]

BGP community entries [0/0], BGP clusterlist entries [0/0]



Neighbor        V    AS MsgRcvd MsgSent   TblVer  InQ OutQ Up/Down  State/PfxRcd

10.100.100.21   4   100   47152   47131       50    0    0     4w4d 15       

192.168.2.3     4   100       0       0        0    0    0     4w4d Idle    

192.168.2.4     4   100   47135   47131       50    0    0     4w4d 4        

Multistespine1#



Multistespine1#show bgp l2vpn evpn neighbors 192.168.2.4 advertised-routes | i 0035.1ac1.37c2 p 1 n 1

Route Distinguisher: 192.168.1.3:33767

*>i[2]:[0]:[0]:[48]:[0035.1ac1.37c2]:[0]:[0.0.0.0]/216

                      10.111.111.1          2000        100          0 200 i

*>i[2]:[0]:[0]:[48]:[0035.1ac1.37c2]:[32]:[172.20.2.10]/272

                      10.111.111.1          2000        100          0 200 i

Multistespine1#

    レイヤ2トポロジがDC-1、Leaf-1からDC-2、Leaf-1に拡張されたことがわかります。

    DC-2 Leaf-1の検証

    MultisteLeaf1#show bgp l2vpn evpn summary

BGP summary information for VRF default, address family L2VPN EVPN

BGP router identifier 192.168.2.4, local AS number 100

BGP table version is 188, L2VPN EVPN config peers 2, capable peers 1

36 network entries and 36 paths using 6120 bytes of memory

BGP attribute entries [16/2560], BGP AS path entries [1/6]

BGP community entries [0/0], BGP clusterlist entries [1/4]



Neighbor        V    AS MsgRcvd MsgSent   TblVer  InQ OutQ Up/Down  State/PfxRcd

192.168.2.1     4   100   47152   47133      188    0    0     4w4d 14       

192.168.2.2     4   100   45981   45968        0    0    0 19:26:17 Idle    

MultisteLeaf1#

MultisteLeaf1#show mac address-table

Legend:

        * - primary entry, G - Gateway MAC, (R) - Routed MAC, O - Overlay MAC

        age - seconds since last seen,+ - primary entry using vPC Peer-Link,

        (T) - True, (F) - False, C - ControlPlane MAC, ~ - vsan

   VLAN     MAC Address      Type      age     Secure NTFY Ports

---------+-----------------+--------+---------+------+----+------------------

*    1     00c8.8bf9.5f01   dynamic  0         F      F    Eth1/16

*  101     00be.75f4.544d   static   -         F      F    Vlan101

*  101     0200.0a6f.6f01   static   -         F      F    nve1(10.111.111.1)

C 1000     0035.1ac1.37c2   dynamic  0         F      F    nve1(10.111.111.1) <<<<<<<<<<<<<<<<<<

* 1000     00c8.8bf9.5f41   dynamic  0         F      F    Eth1/16

C 1000     e0d1.73a4.1d41   dynamic  0         F      F    nve1(10.111.111.1)

C 1001     0035.1ac1.37c3   dynamic  0         F      F    nve1(10.111.111.1)

* 1001     00c8.8bf9.5f42   dynamic  0         F      F    Eth1/16

C 1001     e0d1.73a4.1d42   dynamic  0         F      F    nve1(10.111.111.1)

G    -     0000.2222.3333   static   -         F      F    sup-eth1(R)

G    -     00be.75f4.544d   static   -         F      F    sup-eth1(R)

G  101     00be.75f4.544d   static   -         F      F    sup-eth1(R)

G 1000     00be.75f4.544d   static   -         F      F    sup-eth1(R)

G 1001     00be.75f4.544d   static   -         F      F    sup-eth1(R)

MultisteLeaf1#

    DC-2、Leaf-1はVlan1000を介してホスト4 Macを学習しました。

    MultisteLeaf1#show ip arp vrf vxlan-900001



Flags: * - Adjacencies learnt on non-active FHRP router

       + - Adjacencies synced via CFSoE

       # - Adjacencies Throttled for Glean

       CP - Added via L2RIB, Control plane Adjacencies

       PS - Added via L2RIB, Peer Sync

       RO - Re-Originated Peer Sync Entry

       D - Static Adjacencies attached to down interface



IP ARP Table for context vxlan-900001

Total number of entries: 2

Address         Age       MAC Address     Interface       Flags

172.21.1.100       00:04:09  00c8.8bf9.5f42  Vlan1001       

172.20.2.100       00:04:09  00c8.8bf9.5f41  Vlan1000       

MultisteLeaf1#

    データプレーンのトラブルシューティング

    データプランの検証は、さまざまなパケットキャプチャ方式とバリアントを理解するために、複数のデバイスでテストされます。

    Data-Plane_N5K_Traffic_Flow-1_v1

    この例では、宛先リーフであるN5Kでズームインします。

    SOURCE: 172.20.2.100 (Host-4)
DESTINATION: 172.20.2.10 (Host-1)


    Source-Host4の基本チェック

    toMultisiteLeaf1#show ip interface brief | exclude down
Interface IP-Address OK? Method Status Protocol
Vlan1000 172.20.2.100 YES NVRAM up up 
Vlan1001 172.21.1.100 YES NVRAM up up 
GigabitEthernet2/0/1 unassigned YES unset up up

toMultisiteLeaf1#



INTIATE A PING TO HOST-1:
toMultisiteLeaf1#ping 172.20.2.10
Type escape sequence to abort.
Sending 5, 100-byte ICMP Echos to 172.20.2.10, timeout is 2 seconds:
!!!!!
Success rate is 100 percent (5/5), round-trip min/avg/max = 1/3/8 ms
toMultisiteLeaf1#


    宛先Leaf-1チェック

    leaf1#show cdp neighbors 
Capability Codes: R - Router, T - Trans-Bridge, B - Source-Route-Bridge
S - Switch, H - Host, I - IGMP, r - Repeater,
V - VoIP-Phone, D - Remotely-Managed-Device,
s - Supports-STP-Dispute


Device-ID Local Intrfce Hldtme Capability Platform Port ID
MX066-H-01-SW.cisco.com
mgmt0 178 S I WS-C2960X-48TS-L Gig1/0/26 
ToLeaf1 Eth1/23 132 S I WS-C3750X-24S Gig1/0/1 <<<<<<<<<<<<<<<<< To DC-1/Host-1 
spine1(SAL2024RRYF)
Eth2/23 136 R S s N9K-C9372PX-E Eth1/3 
spine2(SAL1949UELD)
Eth2/24 138 R S s N9K-C9396PX Eth1/7 
leaf1# 
leaf1#



leaf1#show module
Mod Ports Module-Type Model Status
--- ----- ----------------------------------- ---------------------- -----------
0 0 Nexus 72UP 16GFC Supervisor N5K-C5672UP-16G-SUP active *
1 24 Nexus 24xSFP Ethernet Module N5600-72UP16GFC ok <<<<<<<<<<<<<<<<< To DC-1/Host-1 
2 24 Nexus 24xSFP Ethernet/FC Module N5600-72UP16GFC-FC ok
3 6 Nexus 6xQSFP Ethernet Module N5600-72UP16GFC-M6Q ok

Mod Sw Hw World-Wide-Name(s) (WWN)
--- -------------- ------ ---------------------------------------------------
0 7.3(0)N1(1) 1.5 --
1 7.3(0)N1(1) 1.5 --
2 7.3(0)N1(1) 1.5 --
3 7.3(0)N1(1) 1.5 --

Mod MAC-Address(es) Serial-Num
--- -------------------------------------- ----------
0 00de.fb01.9f88 to 00de.fb01.9f88 FOC20162AGC
1 00de.fb01.9f88 to 00de.fb01.9f9f FOC20162AGC
2 00de.fb01.9fa0 to 00de.fb01.9fb7 FOC20162AGC
3 00de.fb01.9fb8 to 00de.fb01.9fcf FOC20162AGC
leaf1#

    次に、ASIC/インスタンスのマッピングを確認する方法を確認します。

    leaf1#show platform fwm info pif eth1/23 | i i slot_asic
Eth1/23 pd: slot 0 logical port num 22 slot_asic_num 1 global_asic_num 2 fw_inst 10 phy_fw_inst 2 fc 0 
leaf1#


leaf1#show hardware internal bigsur all-ports | i "asic|idx|1/23"
Port |asic|inst|inst|
name |idx |slot|asic|eport|logi|flag|adm|opr|if_index|diag|ucVer
1gb1/23 |2 |0 |1 |10 p |22 |b3 |en |up |1a016000|pass| 0.00
leaf1#


    この例では、Leaf-1からHost-1に出力されるパケットを確認できます。

    leaf1#elam slot 1 asic bigsur instance 1
leaf1(bigsur-elam)#trigger lu egress ipv4 if destination-ipv4-address_ipv4 172.20.2.10
leaf1(bigsur-elam)#start capture
leaf1(bigsur-elam)#show capture lu
Egress Interface: Ethernet1/23 IS NOT A PC <<<<<<<<<<<<<<<<< ELAM is smart, we have a catalyst switch as HOST-1 :-)
+-----------------------------------------+
| Lookup Vector |
+--------------------+--------------------+
| Field | Raw Value |
+--------------------+--------------------+
| SID | 21 |
| PKT_ID | 13 |
| TUN_VLD | 0 |
| TUN_TYPE | 0 |
| TUN_IF | 0 |
| TUN_INST | 0 |
| ERSPAN_TERM_VLD | 0 |
| ERSPAN_DST_IF_IDX | 0 |
| L2MP_VLD | 1 |
| TRILL_ODA | 0x000000000000 |
| TRILL_OQTAG_VLD | 0 |
| TRILL_OQTAG_DE | 0 |
| TRILL_DCE_FTAG_VLD | 0 |
| TRILL_DCE_LID_VLD | 0 |
| TRILL_VRM | 0 |
| TRILL_OPT_VLD | 0 |
| TRILL_OPT_BYTE0 | 0 |
| CDCE_DA | 0x020abc000004 |
| CDCE_SA | 0x022001000000 |
| CDCE_DTAG_ETYPE | 0x0200 |
| CDCE_DTAG_TTL | 32 |
| CDCE_DTAG_FTAG | 2 |
| NSH_WORD2 | 0x3e70080 |
| CE_DA | 0x00351ac137c2 |<<<<<<<<<<<<<<<<< Destination Mac address (Host-1 172.20.2.10)
| CE_SA | 0x00c88bf95f41 |<<<<<<<<<<<<<<<<< Source Mac address (Host-4 172.20.2.100)
| VNIC_VLD | 0 |
| CE_1Q_NUM | 1 |
| INT_VLAN | 999 |
| IP_RESV_0 | 0 |
| FCOE_VLD | 0 |
| MPLS_VLD | 0 |
| VEC_TYPE | 0 |
| TRILL_OSA | 0x000000000000 |
| CMD_SGT_VLD | 0 |
| CMD_SGT | 0 |
| CMD_DGT_VLD | 0 |
| CMD_DGT | 0 |
| HDRP_SNAP | 0 |
| L3_IPV6 | 0 |
| L3_SA | 172.20.2.100 |<<<<<<<<<<<<<<<<< Source IP
| L3_DA | 172.20.2.10 |<<<<<<<<<<<<<<<<< Destination IP
| L3_TOS | 0 |
| L3_FRAG | 0 |
| L3_MF | 0 |
| L3_TTL | 255 |
| L3_OPT_NONE | 0 |
| L3_NONE_HBH | 0 |
| L3_NONE_ROUTE | 0 |
| L3_NONE_FRAG | 0 |
| L3_NONE_DEST | 0 |
| L3_AH | 0 |
| L3_ESP | 0 |
| L3_PROT | 1 |<<<<<<<<<<<<<<<<< ICMP
| L3_LENGTH | 100 |
| MAX_IPV6_HBH | 0 |
| MAX_IPV6_FRAG | 0 |
| L4_TCP_UDP | 0 |
| IP_RESV_1 | 0 |
+--------------------+--------------------+
| PYLD_LEN | 4 |
| PARSE_ERR | 0 |
| PARSE_UNEXP | 0 |
| ECN_DROP | 0 |
| IDS_FAIL | 0 |
| IDS_CODE | 0 |
| LKUP_SPARE | 0 |
+--------------------+--------------------+
leaf1(bigsur-elam)#

    N5Kでパケットをキャプチャする方法を理解できるようになりました。N9Kでズームインします。Data-Plane_N9K_Traffic_Flow-2_v1

    Host-4から開始して、Host-2に対して簡単なpingを実行できます。LEAFスイッチのトランジットトラフィックですが、これらのパケットを適切に処理できるかどうかを確認してください。DC-1/Leaf-2で確認します。

    確認するには、インターフェイスeth-1/23を監視し、これらのパケットをCPUにパントし、それに対してethanalyzer/dmirrorを実行します。

    モニタセッションの設定

    leaf2#configure terminal
leaf2(config)#monitor session 1
leaf2(config-monitor)#source interface ethernet 1/23 
leaf2(config-monitor)#destination interface sup-eth 0
leaf2(config-monitor)#no shut
leaf2(config-monitor)#exit

toMultisiteLeaf1#ping 172.20.2.11 repeat 2 
Type escape sequence to abort.
Sending 2, 100-byte ICMP Echos to 172.20.2.11, timeout is 2 seconds:
!!
Success rate is 100 percent (2/2), round-trip min/avg/max = 1/1/1 ms
toMultisiteLeaf1#

    leaf2#ethanalyzer local interface inband mirror

Capturing on inband
2020-05-27 12:20:57.081654 172.20.2.100 -> 172.20.2.11 ICMP Echo (ping) request
2020-05-27 12:20:57.082193 172.20.2.11 -> 172.20.2.100 ICMP Echo (ping) reply
2020-05-27 12:20:57.084902 172.20.2.100 -> 172.20.2.11 ICMP Echo (ping) request
2020-05-27 12:20:57.087406 172.20.2.11 -> 172.20.2.100 ICMP Echo (ping) reply

4 packets captured
leaf2#



leaf2#ethanalyzer local interface inband display-filter "ip.addr==172.20.2.100 && ip.addr==172.20.2.11 && icmp" limit-captured-frames 0
Capturing on inband
2020-05-27 12:20:57.081654 172.20.2.100 -> 172.20.2.11 ICMP Echo (ping) request
2020-05-27 12:20:57.082193 172.20.2.11 -> 172.20.2.100 ICMP Echo (ping) reply
2020-05-27 12:20:57.084902 172.20.2.100 -> 172.20.2.11 ICMP Echo (ping) request
2020-05-27 12:20:57.087406 172.20.2.11 -> 172.20.2.100 ICMP Echo (ping) reply

4 packets captured
leaf2#

    送信元からデータを送信し、宛先リーフでキャプチャする場合は、次の手順を実行します。

    1. Host-4からHost-2にpingを実行します。
    2. 送信元：172.20.2.100 //送信元MACアドレス：00:C8:8B:F9:5F:41
    3. 宛先：172.20.2.11 // Dst MACアドレス：E0:D1:73:A4:1D:41
    4. [Packet Size]:777
    5. Do-Not-Fragment：はい
    6. データパターン文字列：ビーフ

    この例では、送信元と宛先のリーフでパケットをキャプチャできるように、十分な数のパケットが存在します。

    toMultisiteLeaf1#ping 172.20.2.11 repeat 200000 data beef df-bit validate size 777 
Type escape sequence to abort.
Sending 200000, 777-byte ICMP Echos to 172.20.2.11, timeout is 2 seconds:
Packet sent with the DF bit set
Packet has data pattern 0xBEEF
Reply data will be validated
!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!
!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!
!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!
!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!

<...................>
!!!!!!!!!!!!!!!!!!!!!!!!!!
Success rate is 100 percent (7376/7376), round-trip min/avg/max = 1/5/151 ms
toMultisiteLeaf1#

    First HopDC-2、Leaf-1の基本チェック

    Data-Plane_N9K_Traffic_Flow-3_v1

    MultisteLeaf1#show module
Mod Ports Module-Type Model Status
--- ----- ------------------------------------- --------------------- ---------
1 54 48x10GT + 6x40G/100G Ethernet Module N9K-C93108TC-EX active *

Mod Sw Hw Slot
--- ---------------- ------ ----
1 7.0(3)I7(5) 1.3 NA


Mod MAC-Address(es) Serial-Num
--- -------------------------------------- ----------
1 00-be-75-f4-54-46 to 00-be-75-f4-54-95 FDO220225UX

Mod Online Diag Status
--- ------------------
1 Pass

* this terminal session 
MultisteLeaf1#



MultisteLeaf1#show cdp neighbors 
Capability Codes: R - Router, T - Trans-Bridge, B - Source-Route-Bridge
S - Switch, H - Host, I - IGMP, r - Repeater,
V - VoIP-Phone, D - Remotely-Managed-Device,
s - Supports-STP-Dispute

Device-ID Local Intrfce Hldtme Capability Platform Port ID
MX066-H-03-SW.cisco.com
mgmt0 141 S I WS-C2960X-48T Gig1/0/31 
Multistespine1(FDO22150SJZ)
Eth1/6 142 R S s N9K-C92160YC- Eth1/47 
toMultisiteLeaf1 Eth1/16 128 R S I WS-C3750X-24S Gig2/0/1 <<<<<<<<<<<< Towards Host-4

Total entries displayed: 3
MultisteLeaf1#


MultisteLeaf1#show hardware internal tah interface et1/16
#########################################
IfIndex: 0x1a001e00
DstIndex: 6084
IfType: 26
Asic: 0
Asic: 0 <<<<<<<<<<<<<<<<<
AsicPort: 11
SrcId: 22 <<<<<<<<<<<<<<<<<
Slice: 0 <<<<<<<<<<<<<<<<<
PortOnSlice: 11
Table entries for interface Ethernet1/16
<........snipped for brevity...........>

    MultisteLeaf1#show system internal ethpm info interface ethernet 1/16 | grep slice
IF_STATIC_INFO: port_name=Ethernet1/16,if_index:0x1a001e00,ltl=6084,slot=0, nxos_port=60,dmod=1,dpid=11,unit=0,queue=65535,xbar_unitbmp=0x0,ns_pid=255,slice_num=0,port_on_slice=11,src_id=22
MultisteLeaf1#

    Host-4から実際にパケットを受信したハードウェアレベルを確認します。

    MultisteLeaf1#attach module 1
module-1#debug platform internal tah elam asic 0

module-1(TAH-elam)#trigger init asic 0 slice 0 in-select 6 out-select 0 use-src-id 22

param values: start asic 0, start slice 0, lu-a2d 1, in-select 6, out-select 0, src_id 22

module-1(TAH-elam-insel6)#start
module-1(TAH-elam-insel6)#report
Initting block addresses

SUGARBOWL ELAM REPORT SUMMARY
slot - 1, asic - 0, slice - 0
============================

Incoming Interface: Eth1/16
Src Idx : 0x3d, Src BD : 1000
Outgoing Interface Info: dmod 1, dpid 17
Dst Idx : 0x15, Dst BD : 1000

Packet Type: IPv4

Dst MAC address: E0:D1:73:A4:1D:41
Src MAC address: 00:C8:8B:F9:5F:41
.1q Tag0 VLAN: 1000, cos = 0x0

Dst IPv4 address: 172.20.2.11 
Src IPv4 address: 172.20.2.100 
Ver = 4, DSCP = 0, Don't Fragment = 1
Proto = 1, TTL = 255, More Fragments = 0
Hdr len = 20, Pkt len = 777, Checksum = 0xcffe

L4 Protocol : 1 
ICMP type : 8 
ICMP code : 0

Drop Info:
----------

LUA:
LUB:
LUC:
LUD:
Final Drops:


module-1(TAH-elam-insel6)# exit
module-1(TAH-elam)# exit
module-1# exit
MultisteLeaf1#

    pcapとして表示する場合は、pingを継続して実行します。モニタセッションは送信元リーフと宛先リーフで設定されます。

    ソースリーフ上のセッションの監視

    MultisteLeaf1#show run | section monitor
monitor session 1 
source interface Ethernet1/16 both
destination interface sup-eth0
no shut
MultisteLeaf1#

    宛先リーフでのセッションの監視

    leaf2(config)#show run | section monitor
monitor session 1 
source interface Ethernet1/23 both
destination interface sup-eth0
no shut
leaf2(config)#


    ソースリーフでのキャプチャ

    MultisteLeaf1#ethanalyzer local interface inband display-filter "ip.addr==172.20.2.100 && ip.addr==172.20.2.11 && icmp" limit-captured-frames 0 detail

Capturing on inband
Frame 1 (791 bytes on wire, 791 bytes captured)
Arrival Time: May 31, 2020 15:44:46.767411000
[Time delta from previous captured frame: 0.000000000 seconds]
[Time delta from previous displayed frame: 0.000000000 seconds]
[Time since reference or first frame: 0.000000000 seconds]
Frame Number: 1
Frame Length: 791 bytes
Capture Length: 791 bytes
[Frame is marked: False]
[Protocols in frame: eth:ip:icmp:data]
Ethernet II, Src: e0:d1:73:a4:1d:41 (e0:d1:73:a4:1d:41), Dst: 00:c8:8b:f9:5f:41 (00:c8:8b:f9:5f:41)
Destination: 00:c8:8b:f9:5f:41 (00:c8:8b:f9:5f:41)
Address: 00:c8:8b:f9:5f:41 (00:c8:8b:f9:5f:41)
.... ...0 .... .... .... .... = IG bit: Individual address (unicast)
.... ..0. .... .... .... .... = LG bit: Globally unique address (factory default)
Source: e0:d1:73:a4:1d:41 (e0:d1:73:a4:1d:41)
Address: e0:d1:73:a4:1d:41 (e0:d1:73:a4:1d:41)
.... ...0 .... .... .... .... = IG bit: Individual address (unicast)
.... ..0. .... .... .... .... = LG bit: Globally unique address (factory default)
Type: IP (0x0800)
Internet Protocol, Src: 172.20.2.11 (172.20.2.11), Dst: 172.20.2.100 (172.20.2.100) <<<<<<<<<<<<<<<<<<<<< RETURN TRAFFIC (ICMP RESPONSE)
Version: 4
Header length: 20 bytes
Differentiated Services Field: 0x00 (DSCP 0x00: Default; ECN: 0x00)
0000 00.. = Differentiated Services Codepoint: Default (0x00)
.... ..0. = ECN-Capable Transport (ECT): 0
.... ...0 = ECN-CE: 0
Total Length: 777 <<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<< PACKET SIZE IS 777
Identification: 0xaf53 (44883)
Flags: 0x02 (Don't Fragment)
0.. = Reserved bit: Not Set
.1. = Don't fragment: Set <<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<< DF-BIT IS SET
..0 = More fragments: Not Set
Fragment offset: 0
Time to live: 255
Protocol: ICMP (0x01)
Header checksum: 0xbd2d [correct]
[Good: True]
[Bad : False]
Source: 172.20.2.11 (172.20.2.11)
Destination: 172.20.2.100 (172.20.2.100)
Internet Control Message Protocol
Type: 0 (Echo (ping) reply) <<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<< PING RESPONSE
Code: 0 ()
Checksum: 0x78f3 [correct]
Identifier: 0x001c
Sequence number: 7412 (0x1cf4)
Data (749 bytes)

0000 00 00 00 00 14 67 5f 13 be ef be ef be ef be ef .....g_......... <<<<<<<<<<<<<<<<<< you see the data pattern as "beef"
0010 be ef be ef be ef be ef be ef be ef be ef be ef ................
0020 be ef be ef be ef be ef be ef be ef be ef be ef ................
0030 be ef be ef be ef be ef be ef be ef be ef be ef ................
0040 be ef be ef be ef be ef be ef be ef be ef be ef ................
0050 be ef be ef be ef be ef be ef be ef be ef be ef ................
0060 be ef be ef be ef be ef be ef be ef be ef be ef ................
0070 be ef be ef be ef be ef be ef be ef be ef be ef ................
0080 be ef be ef be ef be ef be ef be ef be ef be ef ................
0090 be ef be ef be ef be ef be ef be ef be ef be ef ................
00a0 be ef be ef be ef be ef be ef be ef be ef be ef ................
00b0 be ef be ef be ef be ef be ef be ef be ef be ef ................
00c0 be ef be ef be ef be ef be ef be ef be ef be ef ................
00d0 be ef be ef be ef be ef be ef be ef be ef be ef ................
00e0 be ef be ef be ef be ef be ef be ef be ef be ef ................
00f0 be ef be ef be ef be ef be ef be ef be ef be ef ................
0100 be ef be ef be ef be ef be ef be ef be ef be ef ................
0110 be ef be ef be ef be ef be ef be ef be ef be ef ................
0120 be ef be ef be ef be ef be ef be ef be ef be ef ................
0130 be ef be ef be ef be ef be ef be ef be ef be ef ................
0140 be ef be ef be ef be ef be ef be ef be ef be ef ................
0150 be ef be ef be ef be ef be ef be ef be ef be ef ................
0160 be ef be ef be ef be ef be ef be ef be ef be ef ................
0170 be ef be ef be ef be ef be ef be ef be ef be ef ................
0180 be ef be ef be ef be ef be ef be ef be ef be ef ................
0190 be ef be ef be ef be ef be ef be ef be ef be ef ................
01a0 be ef be ef be ef be ef be ef be ef be ef be ef ................
01b0 be ef be ef be ef be ef be ef be ef be ef be ef ................
01c0 be ef be ef be ef be ef be ef be ef be ef be ef ................
01d0 be ef be ef be ef be ef be ef be ef be ef be ef ................
01e0 be ef be ef be ef be ef be ef be ef be ef be ef ................
01f0 be ef be ef be ef be ef be ef be ef be ef be ef ................
0200 be ef be ef be ef be ef be ef be ef be ef be ef ................
0210 be ef be ef be ef be ef be ef be ef be ef be ef ................
0220 be ef be ef be ef be ef be ef be ef be ef be ef ................
0230 be ef be ef be ef be ef be ef be ef be ef be ef ................
0240 be ef be ef be ef be ef be ef be ef be ef be ef ................
0250 be ef be ef be ef be ef be ef be ef be ef be ef ................
0260 be ef be ef be ef be ef be ef be ef be ef be ef ................
0270 be ef be ef be ef be ef be ef be ef be ef be ef ................
0280 be ef be ef be ef be ef be ef be ef be ef be ef ................
0290 be ef be ef be ef be ef be ef be ef be ef be ef ................
02a0 be ef be ef be ef be ef be ef be ef be ef be ef ................
02b0 be ef be ef be ef be ef be ef be ef be ef be ef ................
02c0 be ef be ef be ef be ef be ef be ef be ef be ef ................
02d0 be ef be ef be ef be ef be ef be ef be ef be ef ................
02e0 be ef be ef be ef be ef be ef be ef 00 .............
Data: 0000000014675F13BEEFBEEFBEEFBEEFBEEFBEEFBEEFBEEF...
[Length: 749]

Frame 2 (795 bytes on wire, 795 bytes captured)
Arrival Time: May 31, 2020 15:44:46.802363000
[Time delta from previous captured frame: 0.034952000 seconds]
[Time delta from previous displayed frame: 0.034952000 seconds]
[Time since reference or first frame: 0.034952000 seconds]
Frame Number: 2
Frame Length: 795 bytes
Capture Length: 795 bytes
[Frame is marked: False]
[Protocols in frame: eth:vlan:ip:icmp:data]
Ethernet II, Src: 00:c8:8b:f9:5f:41 (00:c8:8b:f9:5f:41), Dst: e0:d1:73:a4:1d:41 (e0:d1:73:a4:1d:41)
Destination: e0:d1:73:a4:1d:41 (e0:d1:73:a4:1d:41)
Address: e0:d1:73:a4:1d:41 (e0:d1:73:a4:1d:41)
.... ...0 .... .... .... .... = IG bit: Individual address (unicast)
.... ..0. .... .... .... .... = LG bit: Globally unique address (factory default)
Source: 00:c8:8b:f9:5f:41 (00:c8:8b:f9:5f:41)
Address: 00:c8:8b:f9:5f:41 (00:c8:8b:f9:5f:41)
.... ...0 .... .... .... .... = IG bit: Individual address (unicast)
.... ..0. .... .... .... .... = LG bit: Globally unique address (factory default)
Type: 802.1Q Virtual LAN (0x8100)
802.1Q Virtual LAN, PRI: 0, CFI: 0, ID: 1000
000. .... .... .... = Priority: 0
...0 .... .... .... = CFI: 0
.... 0011 1110 1000 = ID: 1000 <<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<< VLAN-ID
Type: IP (0x0800)
Internet Protocol, Src: 172.20.2.100 (172.20.2.100), Dst: 172.20.2.11 (172.20.2.11) <<<<<<<<<<<<<<<<<<<<< FORWARD TRAFFIC (ICMP REQUEST)
Version: 4
Header length: 20 bytes
Differentiated Services Field: 0x00 (DSCP 0x00: Default; ECN: 0x00)
0000 00.. = Differentiated Services Codepoint: Default (0x00)
.... ..0. = ECN-Capable Transport (ECT): 0
.... ...0 = ECN-CE: 0
Total Length: 777 <<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<< PACKET SIZE
Identification: 0xaf59 (44889)
Flags: 0x02 (Don't Fragment)
0.. = Reserved bit: Not Set
.1. = Don't fragment: Set
..0 = More fragments: Not Set
Fragment offset: 0
Time to live: 255
Protocol: ICMP (0x01)
Header checksum: 0xbd27 [correct]
[Good: True]
[Bad : False]
Source: 172.20.2.100 (172.20.2.100)
Destination: 172.20.2.11 (172.20.2.11)
Internet Control Message Protocol
Type: 8 (Echo (ping) request) <<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<< ICMP REQUEST
Code: 0 ()
Checksum: 0x70aa [correct]
Identifier: 0x001c
Sequence number: 7418 (0x1cfa)
Data (749 bytes)

0000 00 00 00 00 14 67 5f 56 be ef be ef be ef be ef .....g_V........ <<<<<<<<<<<<<<<<<<<<< DATA PATTER AS CONFIGURED (beef)
0010 be ef be ef be ef be ef be ef be ef be ef be ef ................
0020 be ef be ef be ef be ef be ef be ef be ef be ef ................
0030 be ef be ef be ef be ef be ef be ef be ef be ef ................
0040 be ef be ef be ef be ef be ef be ef be ef be ef ................
0050 be ef be ef be ef be ef be ef be ef be ef be ef ................
0060 be ef be ef be ef be ef be ef be ef be ef be ef ................
0070 be ef be ef be ef be ef be ef be ef be ef be ef ................
0080 be ef be ef be ef be ef be ef be ef be ef be ef ................
0090 be ef be ef be ef be ef be ef be ef be ef be ef ................
00a0 be ef be ef be ef be ef be ef be ef be ef be ef ................
00b0 be ef be ef be ef be ef be ef be ef be ef be ef ................
00c0 be ef be ef be ef be ef be ef be ef be ef be ef ................
00d0 be ef be ef be ef be ef be ef be ef be ef be ef ................
00e0 be ef be ef be ef be ef be ef be ef be ef be ef ................
00f0 be ef be ef be ef be ef be ef be ef be ef be ef ................
0100 be ef be ef be ef be ef be ef be ef be ef be ef ................
0110 be ef be ef be ef be ef be ef be ef be ef be ef ................
0120 be ef be ef be ef be ef be ef be ef be ef be ef ................
0130 be ef be ef be ef be ef be ef be ef be ef be ef ................
0140 be ef be ef be ef be ef be ef be ef be ef be ef ................
0150 be ef be ef be ef be ef be ef be ef be ef be ef ................
0160 be ef be ef be ef be ef be ef be ef be ef be ef ................
0170 be ef be ef be ef be ef be ef be ef be ef be ef ................
0180 be ef be ef be ef be ef be ef be ef be ef be ef ................
0190 be ef be ef be ef be ef be ef be ef be ef be ef ................
01a0 be ef be ef be ef be ef be ef be ef be ef be ef ................
01b0 be ef be ef be ef be ef be ef be ef be ef be ef ................
01c0 be ef be ef be ef be ef be ef be ef be ef be ef ................
01d0 be ef be ef be ef be ef be ef be ef be ef be ef ................
01e0 be ef be ef be ef be ef be ef be ef be ef be ef ................
01f0 be ef be ef be ef be ef be ef be ef be ef be ef ................
0200 be ef be ef be ef be ef be ef be ef be ef be ef ................
0210 be ef be ef be ef be ef be ef be ef be ef be ef ................
0220 be ef be ef be ef be ef be ef be ef be ef be ef ................
0230 be ef be ef be ef be ef be ef be ef be ef be ef ................
0240 be ef be ef be ef be ef be ef be ef be ef be ef ................
0250 be ef be ef be ef be ef be ef be ef be ef be ef ................
0260 be ef be ef be ef be ef be ef be ef be ef be ef ................
0270 be ef be ef be ef be ef be ef be ef be ef be ef ................
0280 be ef be ef be ef be ef be ef be ef be ef be ef ................
0290 be ef be ef be ef be ef be ef be ef be ef be ef ................
02a0 be ef be ef be ef be ef be ef be ef be ef be ef ................
02b0 be ef be ef be ef be ef be ef be ef be ef be ef ................
02c0 be ef be ef be ef be ef be ef be ef be ef be ef ................
02d0 be ef be ef be ef be ef be ef be ef be ef be ef ................
02e0 be ef be ef be ef be ef be ef be ef 00 .............
Data: 0000000014675F56BEEFBEEFBEEFBEEFBEEFBEEFBEEFBEEF...
[Length: 749]
<.................>
<.................>
Frame 3 (795 bytes on wire, 795 bytes captured)
Arrival Time: May 31, 2020 15:44:46.840861000
[Time delta from previous captured frame: 0.038498000 seconds]
[Time delta from previous displayed frame: 0.038498000 seconds]
[Time since reference or first frame: 0.073450000 seconds]
Frame Number: 3
Frame Length: 795 bytes
Capture Length: 795 bytes
[Frame is marked: False]
[Protocols in frame: eth:vlan:ip:icmp:data]
Ethernet II, Src: 00:c8:8b:f9:5f:41 (00:c8:8b:f9:5f:41), Dst: e0:d1:73:a4:1d:41 (e0:d1:73:a4:1d:41)
Destination: e0:d1:73:a4:1d:41 (e0:d1:73:a4:1d:41)
Address: e0:d1:73:a4:1d:41 (e0:d1:73:a4:1d:41)
.... ...0 .... .... .... .... = IG bit: Individual address (unicast)
.... ..0. .... .... .... .... = LG bit: Globally unique address (factory default)
Source: 00:c8:8b:f9:5f:41 (00:c8:8b:f9:5f:41)
Address: 00:c8:8b:f9:5f:41 (00:c8:8b:f9:5f:41)
.... ...0 .... .... .... .... = IG bit: Individual address (unicast)
.... ..0. .... .... .... .... = LG bit: Globally unique address (factory default)
Type: 802.1Q Virtual LAN (0x8100)
802.1Q Virtual LAN, PRI: 0, CFI: 0, ID: 1000
000. .... .... .... = Priority: 0
...0 .... .... .... = CFI: 0
.... 0011 1110 1000 = ID: 1000 <<<<<<<<<<<<<<<<<<<<< VLAN-ID
Type: IP (0x0800)
Internet Protocol, Src: 172.20.2.100 (172.20.2.100), Dst: 172.20.2.11 (172.20.2.11) <<<<<<<<<<<<<<<<<<<<< FORWARD TRAFFIC (ICMP REQUEST)
Version: 4
Header length: 20 bytes
Differentiated Services Field: 0x00 (DSCP 0x00: Default; ECN: 0x00)
0000 00.. = Differentiated Services Codepoint: Default (0x00)
.... ..0. = ECN-Capable Transport (ECT): 0
.... ...0 = ECN-CE: 0
Total Length: 777 <<<<<<<<<<<<<<<<<<<<< PACKET SIZE
Identification: 0xaf60 (44896)
Flags: 0x02 (Don't Fragment)
0.. = Reserved bit: Not Set
.1. = Don't fragment: Set
..0 = More fragments: Not Set
Fragment offset: 0
Time to live: 255
Protocol: ICMP (0x01)
Header checksum: 0xbd20 [correct]
[Good: True]
[Bad : False]
Source: 172.20.2.100 (172.20.2.100)
Destination: 172.20.2.11 (172.20.2.11)
Internet Control Message Protocol
Type: 8 (Echo (ping) request) <<<<<<<<<<<<<<<<<<<<< ICMP REQUEST
Code: 0 ()
Checksum: 0x7081 [correct]
Identifier: 0x001c
Sequence number: 7425 (0x1d01)
Data (749 bytes)

0000 00 00 00 00 14 67 5f 78 be ef be ef be ef be ef .....g_x........ <<<<<<<<<<<<<<<<<<<<< DATA PATTER AS CONFIGURED (beef)
0010 be ef be ef be ef be ef be ef be ef be ef be ef ................
0020 be ef be ef be ef be ef be ef be ef be ef be ef ................
0030 be ef be ef be ef be ef be ef be ef be ef be ef ................
0040 be ef be ef be ef be ef be ef be ef be ef be ef ................
0050 be ef be ef be ef be ef be ef be ef be ef be ef ................
0060 be ef be ef be ef be ef be ef be ef be ef be ef ................
0070 be ef be ef be ef be ef be ef be ef be ef be ef ................
0080 be ef be ef be ef be ef be ef be ef be ef be ef ................
0090 be ef be ef be ef be ef be ef be ef be ef be ef ................
00a0 be ef be ef be ef be ef be ef be ef be ef be ef ................
00b0 be ef be ef be ef be ef be ef be ef be ef be ef ................
00c0 be ef be ef be ef be ef be ef be ef be ef be ef ................
00d0 be ef be ef be ef be ef be ef be ef be ef be ef ................
00e0 be ef be ef be ef be ef be ef be ef be ef be ef ................
00f0 be ef be ef be ef be ef be ef be ef be ef be ef ................
0100 be ef be ef be ef be ef be ef be ef be ef be ef ................
0110 be ef be ef be ef be ef be ef be ef be ef be ef ................
0120 be ef be ef be ef be ef be ef be ef be ef be ef ................
0130 be ef be ef be ef be ef be ef be ef be ef be ef ................
0140 be ef be ef be ef be ef be ef be ef be ef be ef ................
0150 be ef be ef be ef be ef be ef be ef be ef be ef ................
0160 be ef be ef be ef be ef be ef be ef be ef be ef ................
0170 be ef be ef be ef be ef be ef be ef be ef be ef ................
0180 be ef be ef be ef be ef be ef be ef be ef be ef ................
0190 be ef be ef be ef be ef be ef be ef be ef be ef ................
01a0 be ef be ef be ef be ef be ef be ef be ef be ef ................
01b0 be ef be ef be ef be ef be ef be ef be ef be ef ................
01c0 be ef be ef be ef be ef be ef be ef be ef be ef ................
01d0 be ef be ef be ef be ef be ef be ef be ef be ef ................
01e0 be ef be ef be ef be ef be ef be ef be ef be ef ................
01f0 be ef be ef be ef be ef be ef be ef be ef be ef ................
0200 be ef be ef be ef be ef be ef be ef be ef be ef ................
0210 be ef be ef be ef be ef be ef be ef be ef be ef ................
0220 be ef be ef be ef be ef be ef be ef be ef be ef ................
0230 be ef be ef be ef be ef be ef be ef be ef be ef ................
0240 be ef be ef be ef be ef be ef be ef be ef be ef ................
0250 be ef be ef be ef be ef be ef be ef be ef be ef ................
0260 be ef be ef be ef be ef be ef be ef be ef be ef ................
0270 be ef be ef be ef be ef be ef be ef be ef be ef ................
0280 be ef be ef be ef be ef be ef be ef be ef be ef ................
0290 be ef be ef be ef be ef be ef be ef be ef be ef ................
02a0 be ef be ef be ef be ef be ef be ef be ef be ef ................
02b0 be ef be ef be ef be ef be ef be ef be ef be ef ................
02c0 be ef be ef be ef be ef be ef be ef be ef be ef ................
02d0 be ef be ef be ef be ef be ef be ef be ef be ef ................
02e0 be ef be ef be ef be ef be ef be ef 00 .............
Data: 0000000014675F78BEEFBEEFBEEFBEEFBEEFBEEFBEEFBEEF...
[Length: 749]

Frame 4 (795 bytes on wire, 795 bytes captured)
Arrival Time: May 31, 2020 15:44:46.888728000
[Time delta from previous captured frame: 0.047867000 seconds]
[Time delta from previous displayed frame: 0.047867000 seconds]
[Time since reference or first frame: 0.121317000 seconds]
Frame Number: 4
Frame Length: 795 bytes
Capture Length: 795 bytes
[Frame is marked: False]
[Protocols in frame: eth:vlan:ip:icmp:data]
Ethernet II, Src: 00:c8:8b:f9:5f:41 (00:c8:8b:f9:5f:41), Dst: e0:d1:73:a4:1d:41 (e0:d1:73:a4:1d:41)
Destination: e0:d1:73:a4:1d:41 (e0:d1:73:a4:1d:41)
Address: e0:d1:73:a4:1d:41 (e0:d1:73:a4:1d:41)
.... ...0 .... .... .... .... = IG bit: Individual address (unicast)
.... ..0. .... .... .... .... = LG bit: Globally unique address (factory default)
Source: 00:c8:8b:f9:5f:41 (00:c8:8b:f9:5f:41)
Address: 00:c8:8b:f9:5f:41 (00:c8:8b:f9:5f:41)
.... ...0 .... .... .... .... = IG bit: Individual address (unicast)
.... ..0. .... .... .... .... = LG bit: Globally unique address (factory default)
Type: 802.1Q Virtual LAN (0x8100)
802.1Q Virtual LAN, PRI: 0, CFI: 0, ID: 1000
000. .... .... .... = Priority: 0
...0 .... .... .... = CFI: 0
.... 0011 1110 1000 = ID: 1000
Type: IP (0x0800)
Internet Protocol, Src: 172.20.2.100 (172.20.2.100), Dst: 172.20.2.11 (172.20.2.11)
Version: 4
Header length: 20 bytes
Differentiated Services Field: 0x00 (DSCP 0x00: Default; ECN: 0x00)
0000 00.. = Differentiated Services Codepoint: Default (0x00)
.... ..0. = ECN-Capable Transport (ECT): 0
.... ...0 = ECN-CE: 0
Total Length: 777
Identification: 0xaf65 (44901)
Flags: 0x02 (Don't Fragment)
0.. = Reserved bit: Not Set
.1. = Don't fragment: Set
..0 = More fragments: Not Set
Fragment offset: 0
Time to live: 255
Protocol: ICMP (0x01)
Header checksum: 0xbd1b [correct]
[Good: True]
[Bad : False]
Source: 172.20.2.100 (172.20.2.100)
Destination: 172.20.2.11 (172.20.2.11)
Internet Control Message Protocol
Type: 8 (Echo (ping) request)
Code: 0 ()
Checksum: 0x704a [correct]
Identifier: 0x001c
Sequence number: 7430 (0x1d06)
Data (749 bytes)

0000 00 00 00 00 14 67 5f aa be ef be ef be ef be ef .....g_.........
0010 be ef be ef be ef be ef be ef be ef be ef be ef ................
0020 be ef be ef be ef be ef be ef be ef be ef be ef ................
0030 be ef be ef be ef be ef be ef be ef be ef be ef ................
0040 be ef be ef be ef be ef be ef be ef be ef be ef ................
0050 be ef be ef be ef be ef be ef be ef be ef be ef ................
0060 be ef be ef be ef be ef be ef be ef be ef be ef ................
0070 be ef be ef be ef be ef be ef be ef be ef be ef ................
0080 be ef be ef be ef be ef be ef be ef be ef be ef ................
0090 be ef be ef be ef be ef be ef be ef be ef be ef ................
00a0 be ef be ef be ef be ef be ef be ef be ef be ef ................
00b0 be ef be ef be ef be ef be ef be ef be ef be ef ................
00c0 be ef be ef be ef be ef be ef be ef be ef be ef ................
00d0 be ef be ef be ef be ef be ef be ef be ef be ef ................
00e0 be ef be ef be ef be ef be ef be ef be ef be ef ................
00f0 be ef be ef be ef be ef be ef be ef be ef be ef ................
0100 be ef be ef be ef be ef be ef be ef be ef be ef ................
0110 be ef be ef be ef be ef be ef be ef be ef be ef ................
0120 be ef be ef be ef be ef be ef be ef be ef be ef ................
0130 be ef be ef be ef be ef be ef be ef be ef be ef ................
0140 be ef be ef be ef be ef be ef be ef be ef be ef ................
0150 be ef be ef be ef be ef be ef be ef be ef be ef ................
0160 be ef be ef be ef be ef be ef be ef be ef be ef ................
0170 be ef be ef be ef be ef be ef be ef be ef be ef ................
0180 be ef be ef be ef be ef be ef be ef be ef be ef ................
0190 be ef be ef be ef be ef be ef be ef be ef be ef ................
01a0 be ef be ef be ef be ef be ef be ef be ef be ef ................
01b0 be ef be ef be ef be ef be ef be ef be ef be ef ................
01c0 be ef be ef be ef be ef be ef be ef be ef be ef ................
01d0 be ef be ef be ef be ef be ef be ef be ef be ef ................
MultisteLeaf1#

    最終ホップDC-1、リーフ–2の基本チェック

    Data-Plane_N9K_Traffic_Flow-2_v1

    leaf2#show module
Mod Ports Module-Type Model Status
--- ----- ------------------------------------- --------------------- ---------
1 54 48x10G + 4x40G + 2x100G Ethernet Modu N9K-C92160YC-X active *

Mod Sw Hw Slot
--- ----------------------- ------ ----
1 9.2(3) 1.3 NA


Mod MAC-Address(es) Serial-Num
--- -------------------------------------- ----------
1 70-79-b3-3e-81-1c to 70-79-b3-3e-81-69 FDO22111H2V

Mod Online Diag Status
--- ------------------
1 Pass

* this terminal session 
leaf2#show cdp neighbors 
Capability Codes: R - Router, T - Trans-Bridge, B - Source-Route-Bridge
S - Switch, H - Host, I - IGMP, r - Repeater,
V - VoIP-Phone, D - Remotely-Managed-Device,
s - Supports-STP-Dispute

Device-ID Local Intrfce Hldtme Capability Platform Port ID
Toleaf2 Eth1/23 142 S I WS-C3750X-24S Gig1/0/1 <<<<<<<<<<<<<<< Towards Host-2 
switch(SAL2024RRYF)
Eth1/47 175 R S I s N9K-C9372PX-E Eth1/4 
spine2(SAL1949UELD)
Eth1/48 121 R S s N9K-C9396PX Eth1/8

Total entries displayed: 3
leaf2#
leaf2#show hardware internal tah interface ethernet1/23
#########################################
IfIndex: 0x1a002c00
DstIndex: 6056
IfType: 26
Asic: 0 <<<<<<<<<<<
Asic: 0
AsicPort: 2
SrcId: 4 <<<<<<<<<<<
Slice: 0 <<<<<<<<<<<
PortOnSlice: 2
<........snipped for brevity...........>
leaf2#

    leaf2#show system internal ethpm info interface ethernet 1/23 | grep slice
IF_STATIC_INFO: port_name=Ethernet1/23,if_index:0x1a002c00,ltl=6056,slot=0, nxos_port=88,dmod=1,dpid=2,unit=0,queue=65535,xbar_unitbmp=0x0,ns_pid=255,slice_num=0,port_on_slice=2,src_id=4
leaf2#

    elamを実行し、何が送信されたかを確認します（パケットサイズ、DFビット、データパターンなど、パラメータが追加されていることに注意してください）。

    leaf2#configure terminal
leaf2(config)#attach module 1
module-1#debug platform internal tah elam asic 0 
module-1(TAH-elam)#trigger init asic 0 in-select 6 out-select 0 use-src-id 4 
param values: start asic 0, start slice 0, lu-a2d 1, in-select 6, out-select 0, src_id 4
module-1(TAH-elam-insel6)# start
module-1(TAH-elam-insel6)# report
Initting block addresses

DAVOS ELAM REPORT SUMMARY
slot - 1, asic - 0, slice - 0
============================

Incoming Interface: Eth1/23
Src Idx : 0x59, Src BD : NA
Outgoing Interface Info: dmod 1, dpid 35
Dst Idx : 0xbd, Dst BD : 1000

Packet Type: IPv4

Dst MAC address: 00:C8:8B:F9:5F:41
Src MAC address: E0:D1:73:A4:1D:41
.1q Tag0 VLAN: 1000, cos = 0x0 <<<<<<<<<<<<<<<<<<<<< VLAN-ID

Dst IPv4 address: 172.20.2.100
Src IPv4 address: 172.20.2.11
Ver = 4, DSCP = 0, Don't Fragment = 1 <<<<<<<<<<<<<<<<<<<<< DF-bit is SET
Proto = 1, TTL = 255, More Fragments = 0
Hdr len = 20, Pkt len = 777, Checksum = 0x13dc <<<<<<<<<<<<<<<<<<<<< Pacekt size = 777

L4 Protocol : 1
ICMP type : 0 <<<<<<<<<<<<<<<<<<<<< (Echo (ping) reply)
ICMP code : 0

Drop Info:
----------

LUA:
LUB:
LUC:
LUD:
Final Drops:

vntag:
vntag_valid : 0
vntag_vir : 0
vntag_svif : 0

module-1(TAH-elam-insel6)#
module-1(TAH-elam-insel6)#exit
module-1(TAH-elam)#exit
module-1#exit
leaf2#



leaf2#ethanalyzer local interface inband display-filter "ip.addr==172.20.2.100 && ip.addr==172.20.2.11 && icmp" limit-captured-frames 0 detail

Capturing on inband
Frame 1 (795 bytes on wire, 795 bytes captured)
Arrival Time: May 31, 2020 15:45:55.674558000
[Time delta from previous captured frame: 0.000000000 seconds]
[Time delta from previous displayed frame: 0.000000000 seconds]
[Time since reference or first frame: 0.000000000 seconds]
Frame Number: 1
Frame Length: 795 bytes
Capture Length: 795 bytes
[Frame is marked: False]
[Protocols in frame: eth:vlan:ip:icmp:data]
Ethernet II, Src: e0:d1:73:a4:1d:41 (e0:d1:73:a4:1d:41), Dst: 00:c8:8b:f9:5f:41 (00:c8:8b:f9:5f:41)
Destination: 00:c8:8b:f9:5f:41 (00:c8:8b:f9:5f:41)
Address: 00:c8:8b:f9:5f:41 (00:c8:8b:f9:5f:41)
.... ...0 .... .... .... .... = IG bit: Individual address (unicast)
.... ..0. .... .... .... .... = LG bit: Globally unique address (factory default)
Source: e0:d1:73:a4:1d:41 (e0:d1:73:a4:1d:41)
Address: e0:d1:73:a4:1d:41 (e0:d1:73:a4:1d:41)
.... ...0 .... .... .... .... = IG bit: Individual address (unicast)
.... ..0. .... .... .... .... = LG bit: Globally unique address (factory default)
Type: 802.1Q Virtual LAN (0x8100)
802.1Q Virtual LAN, PRI: 0, CFI: 0, ID: 1000
000. .... .... .... = Priority: 0
...0 .... .... .... = CFI: 0
.... 0011 1110 1000 = ID: 1000
Type: IP (0x0800)
Internet Protocol, Src: 172.20.2.11 (172.20.2.11), Dst: 172.20.2.100 (172.20.2.100) <<<<<<<<<<<<<<<<<<<<< RETURN TRAFFIC (ICMP RESPONSE)
Version: 4
Header length: 20 bytes
Differentiated Services Field: 0x00 (DSCP 0x00: Default; ECN: 0x00)
0000 00.. = Differentiated Services Codepoint: Default (0x00)
.... ..0. = ECN-Capable Transport (ECT): 0
.... ...0 = ECN-CE: 0
Total Length: 777 <<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<< PACKET SIZE IS 777
Identification: 0x8233 (33331)
Flags: 0x02 (Don't Fragment)
0.. = Reserved bit: Not Set
.1. = Don't fragment: Set <<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<< DF-BIT IS SET
..0 = More fragments: Not Set
Fragment offset: 0
Time to live: 255
Protocol: ICMP (0x01)
Header checksum: 0xea4d [correct]
[Good: True]
[Bad : False]
Source: 172.20.2.11 (172.20.2.11)
Destination: 172.20.2.100 (172.20.2.100)
Internet Control Message Protocol
Type: 0 (Echo (ping) reply) <<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<< PING RESPONSE
Code: 0 ()
Checksum: 0xa035 [correct]
Identifier: 0x001f
Sequence number: 2511 (0x09cf)
Data (749 bytes)

0000 00 00 00 00 14 7f 4a db be ef be ef be ef be ef ......J......... <<<<<<<<<<<<<<<<<< you see the data pattern as "beef"
0010 be ef be ef be ef be ef be ef be ef be ef be ef ................
0020 be ef be ef be ef be ef be ef be ef be ef be ef ................
0030 be ef be ef be ef be ef be ef be ef be ef be ef ................
0040 be ef be ef be ef be ef be ef be ef be ef be ef ................
0050 be ef be ef be ef be ef be ef be ef be ef be ef ................
0060 be ef be ef be ef be ef be ef be ef be ef be ef ................
0070 be ef be ef be ef be ef be ef be ef be ef be ef ................
0080 be ef be ef be ef be ef be ef be ef be ef be ef ................
0090 be ef be ef be ef be ef be ef be ef be ef be ef ................
00a0 be ef be ef be ef be ef be ef be ef be ef be ef ................
00b0 be ef be ef be ef be ef be ef be ef be ef be ef ................
00c0 be ef be ef be ef be ef be ef be ef be ef be ef ................
00d0 be ef be ef be ef be ef be ef be ef be ef be ef ................
00e0 be ef be ef be ef be ef be ef be ef be ef be ef ................
00f0 be ef be ef be ef be ef be ef be ef be ef be ef ................
0100 be ef be ef be ef be ef be ef be ef be ef be ef ................
0110 be ef be ef be ef be ef be ef be ef be ef be ef ................
0120 be ef be ef be ef be ef be ef be ef be ef be ef ................
0130 be ef be ef be ef be ef be ef be ef be ef be ef ................
0140 be ef be ef be ef be ef be ef be ef be ef be ef ................
0150 be ef be ef be ef be ef be ef be ef be ef be ef ................
0160 be ef be ef be ef be ef be ef be ef be ef be ef ................
0170 be ef be ef be ef be ef be ef be ef be ef be ef ................
0180 be ef be ef be ef be ef be ef be ef be ef be ef ................
0190 be ef be ef be ef be ef be ef be ef be ef be ef ................
01a0 be ef be ef be ef be ef be ef be ef be ef be ef ................
01b0 be ef be ef be ef be ef be ef be ef be ef be ef ................
01c0 be ef be ef be ef be ef be ef be ef be ef be ef ................
01d0 be ef be ef be ef be ef be ef be ef be ef be ef ................
01e0 be ef be ef be ef be ef be ef be ef be ef be ef ................
01f0 be ef be ef be ef be ef be ef be ef be ef be ef ................
0200 be ef be ef be ef be ef be ef be ef be ef be ef ................
0210 be ef be ef be ef be ef be ef be ef be ef be ef ................
0220 be ef be ef be ef be ef be ef be ef be ef be ef ................
0230 be ef be ef be ef be ef be ef be ef be ef be ef ................
0240 be ef be ef be ef be ef be ef be ef be ef be ef ................
0250 be ef be ef be ef be ef be ef be ef be ef be ef ................
0260 be ef be ef be ef be ef be ef be ef be ef be ef ................
0270 be ef be ef be ef be ef be ef be ef be ef be ef ................
0280 be ef be ef be ef be ef be ef be ef be ef be ef ................
0290 be ef be ef be ef be ef be ef be ef be ef be ef ................
02a0 be ef be ef be ef be ef be ef be ef be ef be ef ................
02b0 be ef be ef be ef be ef be ef be ef be ef be ef ................
02c0 be ef be ef be ef be ef be ef be ef be ef be ef ................
02d0 be ef be ef be ef be ef be ef be ef be ef be ef ................
02e0 be ef be ef be ef be ef be ef be ef 00 .............
Data: 00000000147F4ADBBEEFBEEFBEEFBEEFBEEFBEEFBEEFBEEF...
[Length: 749]

Frame 2 (791 bytes on wire, 791 bytes captured)
Arrival Time: May 31, 2020 15:45:55.694904000
[Time delta from previous captured frame: 0.020346000 seconds]
[Time delta from previous displayed frame: 0.020346000 seconds]
[Time since reference or first frame: 0.020346000 seconds]
Frame Number: 2
Frame Length: 791 bytes
Capture Length: 791 bytes
[Frame is marked: False]
[Protocols in frame: eth:ip:icmp:data]
Ethernet II, Src: 00:c8:8b:f9:5f:41 (00:c8:8b:f9:5f:41), Dst: e0:d1:73:a4:1d:41 (e0:d1:73:a4:1d:41)
Destination: e0:d1:73:a4:1d:41 (e0:d1:73:a4:1d:41)
Address: e0:d1:73:a4:1d:41 (e0:d1:73:a4:1d:41)
.... ...0 .... .... .... .... = IG bit: Individual address (unicast)
.... ..0. .... .... .... .... = LG bit: Globally unique address (factory default)
Source: 00:c8:8b:f9:5f:41 (00:c8:8b:f9:5f:41)
Address: 00:c8:8b:f9:5f:41 (00:c8:8b:f9:5f:41)
.... ...0 .... .... .... .... = IG bit: Individual address (unicast)
.... ..0. .... .... .... .... = LG bit: Globally unique address (factory default)
Type: IP (0x0800)
Internet Protocol, Src: 172.20.2.100 (172.20.2.100), Dst: 172.20.2.11 (172.20.2.11)
Version: 4
Header length: 20 bytes
Differentiated Services Field: 0x00 (DSCP 0x00: Default; ECN: 0x00)
0000 00.. = Differentiated Services Codepoint: Default (0x00)
.... ..0. = ECN-Capable Transport (ECT): 0
.... ...0 = ECN-CE: 0
Total Length: 777
Identification: 0x8237 (33335)
Flags: 0x02 (Don't Fragment)
0.. = Reserved bit: Not Set
.1. = Don't fragment: Set
..0 = More fragments: Not Set
Fragment offset: 0
Time to live: 255
Protocol: ICMP (0x01)
Header checksum: 0xea49 [correct]
[Good: True]
[Bad : False]
Source: 172.20.2.100 (172.20.2.100)
Destination: 172.20.2.11 (172.20.2.11)
Internet Control Message Protocol
Type: 8 (Echo (ping) request)
Code: 0 ()
Checksum: 0x980f [correct]
Identifier: 0x001f
Sequence number: 2515 (0x09d3)
Data (749 bytes)

0000 00 00 00 00 14 7f 4a fd be ef be ef be ef be ef ......J.........
0010 be ef be ef be ef be ef be ef be ef be ef be ef ................
0020 be ef be ef be ef be ef be ef be ef be ef be ef ................
0030 be ef be ef be ef be ef be ef be ef be ef be ef ................
0040 be ef be ef be ef be ef be ef be ef be ef be ef ................
0050 be ef be ef be ef be ef be ef be ef be ef be ef ................
0060 be ef be ef be ef be ef be ef be ef be ef be ef ................
0070 be ef be ef be ef be ef be ef be ef be ef be ef ................
0080 be ef be ef be ef be ef be ef be ef be ef be ef ................
0090 be ef be ef be ef be ef be ef be ef be ef be ef ................
00a0 be ef be ef be ef be ef be ef be ef be ef be ef ................
00b0 be ef be ef be ef be ef be ef be ef be ef be ef ................
00c0 be ef be ef be ef be ef be ef be ef be ef be ef ................
00d0 be ef be ef be ef be ef be ef be ef be ef be ef ................
00e0 be ef be ef be ef be ef be ef be ef be ef be ef ................
00f0 be ef be ef be ef be ef be ef be ef be ef be ef ................
0100 be ef be ef be ef be ef be ef be ef be ef be ef ................
0110 be ef be ef be ef be ef be ef be ef be ef be ef ................
0120 be ef be ef be ef be ef be ef be ef be ef be ef ................
0130 be ef be ef be ef be ef be ef be ef be ef be ef ................
0140 be ef be ef be ef be ef be ef be ef be ef be ef ................
0150 be ef be ef be ef be ef be ef be ef be ef be ef ................
0160 be ef be ef be ef be ef be ef be ef be ef be ef ................
0170 be ef be ef be ef be ef be ef be ef be ef be ef ................
0180 be ef be ef be ef be ef be ef be ef be ef be ef ................
0190 be ef be ef be ef be ef be ef be ef be ef be ef ................
01a0 be ef be ef be ef be ef be ef be ef be ef be ef ................
01b0 be ef be ef be ef be ef be ef be ef be ef be ef ................
01c0 be ef be ef be ef be ef be ef be ef be ef be ef ................
01d0 be ef be ef be ef be ef be ef be ef be ef be ef ................
01e0 be ef be ef be ef be ef be ef be ef be ef be ef ................
01f0 be ef be ef be ef be ef be ef be ef be ef be ef ................
0200 be ef be ef be ef be ef be ef be ef be ef be ef ................
0210 be ef be ef be ef be ef be ef be ef be ef be ef ................
0220 be ef be ef be ef be ef be ef be ef be ef be ef ................
0230 be ef be ef be ef be ef be ef be ef be ef be ef ................
0240 be ef be ef be ef be ef be ef be ef be ef be ef ................
0250 be ef be ef be ef be ef be ef be ef be ef be ef ................
0260 be ef be ef be ef be ef be ef be ef be ef be ef ................
0270 be ef be ef be ef be ef be ef be ef be ef be ef ................
0280 be ef be ef be ef be ef be ef be ef be ef be ef ................
0290 be ef be ef be ef be ef be ef be ef be ef be ef ................
02a0 be ef be ef be ef be ef be ef be ef be ef be ef ................
02b0 be ef be ef be ef be ef be ef be ef be ef be ef ................
02c0 be ef be ef be ef be ef be ef be ef be ef be ef ................
02d0 be ef be ef be ef be ef be ef be ef be ef be ef ................
02e0 be ef be ef be ef be ef be ef be ef 00 .............
Data: 00000000147F4AFDBEEFBEEFBEEFBEEFBEEFBEEFBEEFBEEF...
[Length: 749]

    更新履歴

    改定 発行日 コメント
    2.0
    17-Oct-2022
    IPアドレッシングの改訂
    1.0
    07-Jul-2020
    初版
    TAC Authored

    シスコ エンジニア提供

    • Krishna Chockalingam
      Cisco TACエンジニア
    • Parthiban Chinnaya
      Cisco TACエンジニア
    • Sivakumar Sukumar
      Cisco TACエンジニア

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