配置并验证Catalyst 9000系列交换机上的Netflow、AVC和ETA

Switch#show flow exporter TAC-EXPORT statistics
Flow Exporter TAC-EXPORT:
  Packet send statistics (last cleared 00:08:38 ago):
    Successfully sent:         2                     (24 bytes)

  Client send statistics:
    Client: Flow Monitor TAC-MONITOR-IN
      Records added:           0
      Bytes added:             12
        - sent:                12

    Client: Flow Monitor TAC-MONITOR-OUT
      Records added:           0
      Bytes added:             12
        - sent:                12

平台相关验证

NetFlow初始化 — NFL分区表

• NetFlow分区针对不同功能进行初始化，每个方向有16个分区（输入与输出）。
• NetFlow分区表配置分为全局银行分配，进一步细分为入口和出口流银行。

关键字段

• 参加者人数
• 分区启用状态
• 分区限制
• 当前分区使用情况
  
  

要查看NetFlow分区表，可以运行命令show platform software fed switch active|standby|member| fnf sw-table-sizes asic <asic number> shadow 0。

注：创建的流特定于交换机和asic核心。需要相应地指定交换机编号（主用、备用等）。输入的ASIC编号绑定到各个接口，用show platform software fed switch active|standby|member ifm mappings  于确定与接口对应的ASIC。对于阴影选项，请始终使用“0”。

Switch#show platform software fed switch active fnf sw-table-sizes asic 0 shadow 0 --------------------------------- Global Bank Allocation --------------------------------- Ingress Banks : Bank 0 Bank 1 Egress Banks : Bank 2 Bank 3 --------------------------------- Global flow table Info  <--- Provides the number of entries used per direction INGRESS usedBankEntry 0 usedOvfTcamEntry 0 EGRESS usedBankEntry 0 usedOvfTcamEntry 0 --------------------------------- Flows Statistics INGRESS TotalSeen=0 MaxEntries=0 MaxOverflow=0 EGRESS TotalSeen=0 MaxEntries=0 MaxOverflow=0 --------------------------------- Partition Table --------------------------------- ## Dir Limit CurrFlowCount OverFlowCount MonitoringEnabled 0 ING 0 0 0 0 1 ING 16640 0 0 1 <-- Current flow count in hardware  2 ING 0 0 0 0 3 ING 16640 0 0 0 4 ING 0 0 0 0 5 ING 8192 0 0 1 6 ING 0 0 0 0 7 ING 0 0 0 0 8 ING 0 0 0 0 9 ING 0 0 0 0 10 ING 0 0 0 0 11 ING 0 0 0 0 12 ING 0 0 0 0 13 ING 0 0 0 0 14 ING 0 0 0 0 15 ING 0 0 0 0 0 EGR 0 0 0 0 1 EGR 16640 0 0 1 <-- Current flow count in hardware  2 EGR 0 0 0 0 3 EGR 16640 0 0 0 4 EGR 0 0 0 0 5 EGR 8192 0 0 1 6 EGR 0 0 0 0 7 EGR 0 0 0 0 8 EGR 0 0 0 0 9 EGR 0 0 0 0 10 EGR 0 0 0 0 11 EGR 0 0 0 0 12 EGR 0 0 0 0 13 EGR 0 0 0 0 14 EGR 0 0 0 0 15 EGR 0 0 0 0

流量监控器

流监控器配置包括以下内容：

1. NetFlow ACL配置，这会导致在ACL TCAM表中创建条目。


ACL TCAM条目包括：

• 查找匹配密钥
• 用于NetFlow查找的结果参数，包括以下内容：
  
  • 配置文件ID
  • NetFlow ID

2.流掩码配置，这会导致NflLookupTable和NflFlowMaskTable中创建一个条目。



• 通过NetFlow ACL结果参数索引，以查找netflow查找的流掩码
  
  

NetFlow ACL

要查看NetFlow ACL配置，请运行命令show platform hardware fed switch active fwd-asic resource tcam table nfl_acl asic <asic number>。

提示：如果存在端口ACL(PACL)，则会在接口映射到的ASIC上创建条目。对于路由器ACL(RACL)，条目存在于所有ASIC上。

• 在此输出中，有NFCMD0和NFCMD1，它们是4位值。要计算配置文件ID，请将值转换为二进制。
• 在此输出中，NFCMD0为1,NFCMD1为2。转换为二进制时：000100010 
• 在Cisco IOS XE 16.12中，在合并的8位内，前4位是配置文件ID，第7位表示查找已启用。因此，在示例00010010中，配置文件ID为1。
• 在Cisco IOS XE 16.11及更早版本的代码中，在组合的8位内，前6位是配置文件ID，第7位表示查找已启用。在本例中，00010010，配置文件ID为4。

Switch#show platform hardware fed switch active fwd-asic resource tcam table nfl_acl asic 0 Printing entries for region INGRESS_NFL_ACL_CONTROL (308) type 6 asic 0 ======================================================== Printing entries for region INGRESS_NFL_ACL_GACL (309) type 6 asic 0 ======================================================== Printing entries for region INGRESS_NFL_ACL_PACL (310) type 6 asic 0 ======================================================== TAQ-2 Index-32 (A:0,C:0) Valid StartF-1 StartA-1 SkipF-0 SkipA-0 Input IPv4 NFL PACL Labels Port Vlan L3If Group M: 00ff 0000 0000 0000 V: 0001 0000 0000 0000 vcuResults l3Len l3Pro l3Tos SrcAddr DstAddr mtrid vrfid SH M: 00000000 0000 00 00 00000000 00000000 00 0000 0000 V: 00000000 0000 00 00 00000000 00000000 00 0000 0000 RMAC RA MEn IPOPT MF NFF DF SO DPT TM DSEn l3m M: 0 0 0 0 0 0 0 0 0 0 0 0 V: 0 0 0 0 0 0 0 0 0 0 0 0 SrcPort DstPortIITypeCode TCPFlags TTL ISBM QosLabel ReQOS S_P2P D_P2P M: 0000 0000 00 00 0000 00 0 0 0 V: 0000 0000 00 00 0000 00 0 0 0 SgEn SgLabel AuthBehaviorTag l2srcMiss l2dstMiss ipTtl SgaclDeny M: 0 000000 0 0 0 0 0 V: 0 000000 0 0 0 0 0 NFCMD0 NFCMD1 SMPLR LKP1 LKP2 PID QOSPRI MQLBL MPLPRO LUT0PRI CPUCOPY 1 2 0 1 0 0 0 0 0 0x0000f 0 Start/Skip Word: 0x00000003 Start Feature, Terminate ----------------------------------------- Printing entries for region INGRESS_NFL_ACL_VACL (311) type 6 asic 0 ======================================================== Printing entries for region INGRESS_NFL_ACL_RACL (312) type 6 asic 0 ======================================================== Printing entries for region INGRESS_NFL_ACL_SSID (313) type 6 asic 0 ======================================================== Printing entries for region INGRESS_NFL_CATCHALL (314) type 6 asic 0 ======================================================== TAQ-2 Index-224 (A:0,C:0) Valid StartF-1 StartA-1 SkipF-0 SkipA-0 Input IPv4 NFL RACL Labels Port Vlan L3If Group M: 0000 0000 0000 0000 V: 0000 0000 0000 0000 vcuResults l3Len l3Pro l3Tos SrcAddr DstAddr mtrid vrfid SH M: 00000000 0000 00 00 00000000 00000000 00 0000 0000 V: 00000000 0000 00 00 00000000 00000000 00 0000 0000 RMAC RA MEn IPOPT MF NFF DF SO DPT TM DSEn l3m M: 0 0 0 0 0 0 0 0 0 0 0 0 V: 0 0 0 0 0 0 0 0 0 0 0 0 SrcPort DstPortIITypeCode TCPFlags TTL ISBM QosLabel ReQOS S_P2P D_P2P M: 0000 0000 00 00 0000 00 0 0 0 V: 0000 0000 00 00 0000 00 0 0 0 SgEn SgLabel AuthBehaviorTag l2srcMiss l2dstMiss ipTtl SgaclDeny M: 0 000000 0 0 0 0 0 V: 0 000000 0 0 0 0 0 NFCMD0 NFCMD1 SMPLR LKP1 LKP2 PID QOSPRI MQLBL MPLPRO LUT0PRI CPUCOPY 0 0 0 0 0 0 0 0 0 0x00000 0 Start/Skip Word: 0x00000003 Start Feature, Terminate ----------------------------------------- TAQ-2 Index-225 (A:0,C:0) Valid StartF-0 StartA-0 SkipF-0 SkipA-0 Input IPv4 NFL PACL Labels Port Vlan L3If Group M: 0000 0000 0000 0000 V: 0000 0000 0000 0000 vcuResults l3Len l3Pro l3Tos SrcAddr DstAddr mtrid vrfid SH M: 00000000 0000 00 00 00000000 00000000 00 0000 0000 V: 00000000 0000 00 00 00000000 00000000 00 0000 0000 RMAC RA MEn IPOPT MF NFF DF SO DPT TM DSEn l3m M: 0 0 0 0 0 0 0 0 0 0 0 0 V: 0 0 0 0 0 0 0 0 0 0 0 0 SrcPort DstPortIITypeCode TCPFlags TTL ISBM QosLabel ReQOS S_P2P D_P2P M: 0000 0000 00 00 0000 00 0 0 0 V: 0000 0000 00 00 0000 00 0 0 0 SgEn SgLabel AuthBehaviorTag l2srcMiss l2dstMiss ipTtl SgaclDeny M: 0 000000 0 0 0 0 0 V: 0 000000 0 0 0 0 0 NFCMD0 NFCMD1 SMPLR LKP1 LKP2 PID QOSPRI MQLBL MPLPRO LUT0PRI CPUCOPY 0 0 0 0 0 0 0 0 0 0x00000 0 Start/Skip Word: 0x00000000 No Start, Terminate ----------------------------------------- TAQ-2 Index-226 (A:0,C:0) Valid StartF-0 StartA-0 SkipF-0 SkipA-0 Input IPv6 NFL PACL Labels Port Vlan L3If Group Mask 0x0000 0x0000 0x0000 0x0000 Value 0x0000 0x0000 0x0000 0x0000 vcuResult dstAddr0 dstAddr1 dstAddr2 dstAddr3 srcAddr0 00000000 00000000 00000000 00000000 00000000 00000000 00000000 00000000 00000000 00000000 00000000 00000000 srcAddr1 srcAddr2 srcAddr3 TC HL l3Len fLabel vrfId toUs 00000000 00000000 00000000 00 00 0000 00000 000 0 00000000 00000000 00000000 00 00 0000 00000 000 0 l3Pro mtrId AE FE RE HE MF NFF SO IPOPT RA MEn RMAC DPT TMP l3m 00 00 0 0 0 0 0 0 0 0 0 0 0 0 0 0 00 00 0 0 0 0 0 0 0 0 0 0 0 0 0 0 DSE srcPort dstPortIITypeCode tcpFlags IIPresent cZId dstZId 0 0000 0000 00 00 00 00 0 0000 0000 00 00 00 00 v6RT AH ESP mREn ReQOS QosLabel PRole VRole AuthBehaviorTag M: 0 0 0 0 0 00 0 0 0 V: 0 0 0 0 0 00 0 0 0 SgEn SgLabel M: 0 000000 V: 0 000000 NFCMD0 NFCMD1 SMPLR LKP1 LKP2 PID QOSPRI MQLBL MPLPRO LUT0PRI CPUCOPY 0 0 0 0 0 0 0 0 0 0x00000 0 Start/Skip Word: 0x00000000 No Start, Terminate ----------------------------------------- TAQ-2 Index-228 (A:0,C:0) Valid StartF-0 StartA-0 SkipF-0 SkipA-0 conversion to string vmr l2p not supported ----------------------------------------- TAQ-2 Index-230 (A:0,C:0) Valid StartF-0 StartA-0 SkipF-0 SkipA-0 Input MAC NFL PACL Labels Port Vlan L3If Group M: 0000 0000 0000 0000 V: 0000 0000 0000 0000 arpSrcHwAddr arpDestHwAddr arpSrcIpAddr arpTargetIp arpOperation M: 000000000000 000000000000 00000000 00000000 0000 V: 000000000000 000000000000 00000000 00000000 0000 TRUST SNOOP SVALID DVALID M: 0 0 0 0 V: 0 0 0 0 arpHardwareLength arpHardwareType arpProtocolLength arpProtocolType M: 00000000 00000000 00000000 00000000 V: 00000000 00000000 00000000 00000000 VlanId l2Encap l2Protocol cosCFI srcMAC dstMAC ISBM QosLabel M: 000 0 0000 0 000000000000 000000000000 00 00 V: 000 0 0000 0 000000000000 000000000000 00 00 ReQOS isSnap isLLC AuthBehaviorTag M: 0 0 0 0 V: 0 0 0 0 NFCMD0 NFCMD1 SMPLR LKP1 LKP2 PID QOSPRI MQLBL MPLPRO LUT0PRI CPUCOPY 0 0 0 0 0 0 0 0 0 0x00000 0 Start/Skip Word: 0x00000000 No Start, Terminate -----------------------------------------

流掩码

运行命令show platform software fed switch active|standby|member fnf fmask-entry asic <asic number> entry 1  以查看硬件中安装了流掩码。关键字段列表的数量也可在此处找到。 

Switch#show platform software fed switch active fnf fmask-entry asic 1 entry 1 --------------------------------- mask0_valid : 1 Mask hdl0 : 1 Profile ID : 0 Feature 0 : 148 Fmsk0 RefCnt: 1 Mask M1 : [511:256] => :00000000 00000000 00000000 00000000 00000000 00000000 00000000 00000000 [255:000] => :FFFFFFFF 00000000 FFFFFFFF 03FF0000 00000000 00FF0000 00000000 C00000FF Mask M2 : Key Map : Source Field-Id Size NumPFields Pfields 002 090 04 01 (0 1 1 1) 002 091 04 01 (0 1 1 0) 002 000 01 01 (0 1 0 7) 000 056 08 01 (0 0 2 4) 001 011 11 04 (0 0 0 1) (0 0 0 0) (0 1 0 6) (0 0 2 0) 000 067 32 01 (0 1 12 0) 000 068 32 01 (0 1 12 2)

流统计数据和时间戳卸载数据

运行命令show platform software fed switch active fnf flow-record asic <asic number> start-index <index number> num-flows <number of flows> ，查看netflow统计信息以及时间戳

Switch#show platform software fed switch active fnf flow-record asic 1 start-index 1 num-flows 1 1 flows starting at 1 for asic 1:------------------------------------------------- Idx 996 : {90, ALR_INGRESS_NET_FLOW_ACL_LOOKUP_TYPE1 = 0x01} {91, ALR_INGRESS_NET_FLOW_ACL_LOOKUP_TYPE2 = 0x01} {0, ALR_INGRESS_NFL_SPECIAL1 = 0x00} {56, PHF_INGRESS_L3_PROTOCOL = 0x11} {11 PAD-UNK = 0x0000} {67, PHF_INGRESS_IPV4_DEST_ADDRESS = 0xc0a86464} {68, PHF_INGRESS_IPV4_SRC_ADDRESS = 0xc0a8c864} FirstSeen = 0x4b2f, LastSeen = 0x4c59, sysUptime = 0x4c9d PKT Count = 0x000000000102d5df, L2ByteCount = 0x00000000ca371638 Switch#show platform software fed switch active fnf flow-record asic 1 start-index 1 num-flows 1 1 flows starting at 1 for asic 1:------------------------------------------------- Idx 996 : {90, ALR_INGRESS_NET_FLOW_ACL_LOOKUP_TYPE1 = 0x01} {91, ALR_INGRESS_NET_FLOW_ACL_LOOKUP_TYPE2 = 0x01} {0, ALR_INGRESS_NFL_SPECIAL1 = 0x00} {56, PHF_INGRESS_L3_PROTOCOL = 0x11} {11 PAD-UNK = 0x0000} {67, PHF_INGRESS_IPV4_DEST_ADDRESS = 0xc0a86464} {68, PHF_INGRESS_IPV4_SRC_ADDRESS = 0xc0a8c864} FirstSeen = 0x4b2f, LastSeen = 0x4c5b, sysUptime = 0x4c9f PKT Count = 0x0000000001050682, L2ByteCount = 0x00000000cbed1590

应用可视性与可控性(AVC)

背景信息

• 应用可视性与可控性(AVC)解决方案利用基于网络的识别版本2(NBAR2)、NetFlow V9以及各种报告和管理工具(Cisco Prime)来帮助通过深度数据包检测(DPI)对应用进行分类。 
• AVC可在独立交换机或交换机堆叠的有线接入端口上配置。
• AVC也可用于思科无线控制器，以根据DPI识别应用，然后将其标记为特定DSCP值。它还可以收集各种无线性能指标，例如应用和客户端方面的带宽使用情况。 

性能和扩展

性能：每个交换机成员能够以低于50%的CPU利用率每秒处理500个连接(CPS)。在此速率之外，AVC服务没有保证。

扩展：能够处理每24个接入端口多达5000个双向流（每个接入端口约200个流）。

有线AVC限制

• AVC和加密流量分析(ETA)不能在同一接口上同时配置。
• 仅单播IPv4(TCP/UDP)流量支持数据包分类。
• 只有有线物理端口支持基于NBAR的QoS策略配置。这包括第2层接入和TRUNK端口以及第3层路由端口。
• 端口通道成员、交换机虚拟接口(SVI)或子接口不支持基于NBAR的QoS策略配置。
• 基于NBAR2的分类器(match protocol)，仅支持标记和管制的QoS操作。 
• 在所有策略中，“Match protocol”限制为255个不同的协议（8位硬件限制）

注意：这不是所有限制的详尽列表，请参阅适用于您的平台和代码版本的相应AVC配置指南。 

网络图

组件

AVC配置由构成解决方案的三个主要组件组成：

可视性：协议发现

• 协议发现通过NBAR实现，NBAR提供每个接口、方向和应用字节/数据包的统计信息。
• 通过接口配置：为特定接口启用协议发现ip nbar protocol-discovery。

如输出所示，如何启用协议发现：

Switch(config)#interface fi4/0/5
Switch(config-if)#ip nbar protocol-discovery
Switch(config-if)#exit

Switch#show run int fi4/0/5
Building configuration...

Current configuration : 70 bytes
!
interface FiveGigabitEthernet4/0/5
ip nbar protocol-discovery
end

控制：基于应用的QoS

与在IP地址和UDP/TCP端口上匹配的传统QoS相比，AVC通过基于应用的QoS实现更精细的控制，从而允许您在应用上进行匹配，并通过标记和管制等QoS操作提供更精细的控制。

• 对聚合流量（而不是每个流）执行操作。
• 基于应用的QoS通过创建类映射、匹配协议，然后创建策略映射来实现。 
• 基于应用的QoS策略已附加到接口。

如输出所示，基于应用的QoS的配置示例：

Switch(config)#class-map WEBEX
Switch(config-cmap)#match protocol webex-media
Switch(config)#end

Switch(config)#policy-map WEBEX
Switch(config-pmap)#class WEBEX
Switch(config-pmap-c)#set dscp af41
Switch(config)#end

Switch(config)#interface fi4/0/5
Switch(config-if)#service-policy input WEBEX
Switch(config)#end

Switch#show run int fi4/0/5
Building configuration...

Current configuration : 98 bytes
!
interface FiveGigabitEthernet4/0/5
service-policy input WEBEX
ip nbar protocol-discovery
end

基于应用的Flexible NetFlow

有线AVC FNF支持两种类型的预定义流记录：传统双向流记录和新的方向流记录。

双向流记录用于跟踪客户端/服务器应用统计信息。

如输出所示，双向流记录的配置示例。

Switch(config)#flow record BIDIR-1
Switch(config-flow-record)#match ipv4 version
Switch(config-flow-record)#match ipv4 protocol
Switch(config-flow-record)#match application name
Switch(config-flow-record)#match connection client ipv4 address
Switch(config-flow-record)#match connection server ipv4 address
Switch(config-flow-record)#match connection server transport port
Switch(config-flow-record)#match flow observation point
Switch(config-flow-record)#collect flow direction
Switch(config-flow-record)#collect connection initiator
Switch(config-flow-record)#collect connection new-connections
Switch(config-flow-record)#collect connection client counter packets long
Switch(config-flow-record)#connection client counter bytes network long
Switch(config-flow-record)#collect connection server counter packets long
Switch(config-flow-record)#connection server counter bytes network long
Switch(config-flow-record)#collect timestamp absolute first
Switch(config-flow-record)#collect timestamp absolute last
Switch(config-flow-record)#end

Switch#show flow record BIDIR-1
flow record BIDIR-1:
Description: User defined
No. of users: 0
Total field space: 78 bytes
Fields:
match ipv4 version
match ipv4 protocol
match application name
match connection client ipv4 address
match connection server ipv4 address
match connection server transport port
match flow observation point
collect flow direction
collect timestamp absolute first
collect timestamp absolute last
collect connection initiator
collect connection new-connections
collect connection server counter packets long
collect connection client counter packets long
collect connection server counter bytes network long
collect connection client counter bytes network long

方向记录是用于输入/输出的应用统计信息。

如输出所示，输入和输出方向记录的配置示例：

注：命令match interface input指定与输入接口的匹配。命令指match interface output定与输出接口的匹配项。该命令match application name对于AVC支持是必需的。 

Switch(config)#flow record APP-IN
Switch(config-flow-record)#match ipv4 version
Switch(config-flow-record)#match ipv4 protocol
Switch(config-flow-record)#match ipv4 source address
Switch(config-flow-record)#match ipv4 destination address
Switch(config-flow-record)#match transport source-port
Switch(config-flow-record)#match transport destination-port
Switch(config-flow-record)#match interface input  
Switch(config-flow-record)#match application name
Switch(config-flow-record)#collect interface output
Switch(config-flow-record)#collect counter bytes long
Switch(config-flow-record)#collect counter packets long
Switch(config-flow-record)#collect timestamp absolute first
Switch(config-flow-record)#collect timestamp absolute last
Switch(config-flow-record)#end

Switch#show flow record APP-IN
flow record APP-IN:
Description: User defined
No. of users: 0
Total field space: 58 bytes
Fields:
match ipv4 version
match ipv4 protocol
match ipv4 source address
match ipv4 destination address
match transport source-port
match transport destination-port
match interface input
match application name
collect interface output
collect counter bytes long
collect counter packets long
collect timestamp absolute first
collect timestamp absolute last

Switch(config)#flow record APP-OUT
Switch(config-flow-record)#match ipv4 version
Switch(config-flow-record)#match ipv4 protocol
Switch(config-flow-record)#match ipv4 source address
Switch(config-flow-record)#match ipv4 destination address
Switch(config-flow-record)#match transport source-port
Switch(config-flow-record)#match transport destination-port
Switch(config-flow-record)#match interface output 
Switch(config-flow-record)#match application name
Switch(config-flow-record)#collect interface input
Switch(config-flow-record)#collect counter bytes long
Switch(config-flow-record)#collect counter packets long
Switch(config-flow-record)#collect timestamp absolute first
Switch(config-flow-record)#collect timestamp absolute last
Switch(config-flow-record)#end

Switch#show flow record APP-OUT
flow record APP-OUT:
Description: User defined
No. of users: 0
Total field space: 58 bytes
Fields:
match ipv4 version
match ipv4 protocol
match ipv4 source address
match ipv4 destination address
match transport source-port
match transport destination-port
match interface output
match application name
collect interface input
collect counter bytes long
collect counter packets long
collect timestamp absolute first
collect timestamp absolute last

流导出器


创建流导出器以定义导出参数。 

如输出所示，流导出器的示例配置：

Switch(config)#flow exporter AVC
Switch(config-flow-exporter)#destination 192.168.69.2
Switch(config-flow-exporter)#source vlan69
Switch(config-flow-exporter)#end

Switch#show run flow exporter AVC
Current configuration:
!
flow exporter AVC
destination 192.168.69.2
source Vlan69
!

流量监控器

创建流监控器，将其关联到流记录。

如输出所示，流量监控器的配置示例：

Switch(config)#flow monitor AVC-MONITOR
Switch(config-flow-monitor)#record APP-OUT
Switch(config-flow-monitor)#exporter AVC
Switch(config-flow-monitor)#end

Switch#show run flow monitor AVC-MONITOR
Current configuration:
!
flow monitor AVC-MONITOR
exporter AVC
record APP-OUT

将流监控器关联到接口

最多可以将具有不同预定义记录的两个AVC监控器同时连接到一个接口。

如输出所示，流量监控器的配置示例：

Switch(config)#interface fi4/0/5
Switch(config-if)#ip flow monitor AVC-MONITOR out
Switch(config-if)#end

Switch#show run interface fi4/0/5
Building configuration...
Current configuration : 134 bytes
!
interface FiveGigabitEthernet4/0/5
ip flow monitor AVC-MONITOR output
service-policy input WEBEX
ip nbar protocol-discovery
end

NBAR2

NBAR2动态无中断协议包升级

协议包是更新设备上的NBAR2协议支持的软件包，无需替换设备上的Cisco软件。协议包中包含已编译并打包的NBAR2正式支持的应用程序信息。 对于每个应用程序，协议包都包含有关应用程序签名和应用属性的信息。每个软件版本都随附一个内置协议包。

• NBAR2提供了一种更新协议数据包的方法，无需任何流量或服务中断，也无需修改设备上的软件映像。
• NBAR2协议数据包可从思科软件中心下载，地址为：NBAR2协议包库。

NBAR2协议包升级

在安装新的协议包之前，必须将协议数据包复制到所有交换机的闪存中。要加载新的协议包，请使用命令ip nbar protocol-pack flash:<Pack Name>。

无需重新加载交换机即可进行NBAR2升级。

如输出所示，有关如何加载NBAR2协议包的示例配置：

Switch(config)#ip nbar protocol-pack flash:newProtocolPack

要恢复为内置协议包，请使用命令default ip nbar protocol-pack。

如输出中所示，有关如何恢复到内置协议包的示例配置：

Switch(config)#default ip nbar protocol-pack

显示NBAR2协议包信息

要显示协议包信息，请使用下列命令：

• show ip nbar version
• show ip nbar protocol-pack active detail

如输出所示，这些命令的输出示例：

Switch#show ip nbar version
NBAR software version: 37
NBAR minimum backward compatible version: 37
NBAR change ID: 293126

Loaded Protocol Pack(s):
Name: Advanced Protocol Pack
Version: 43.0
Publisher: Cisco Systems Inc.
NBAR Engine Version: 37
State: Active

Switch#show ip nbar protocol-pack active detail
Active Protocol Pack:
Name: Advanced Protocol Pack
Version: 43.0
Publisher: Cisco Systems Inc.
NBAR Engine Version: 37
State: Active

NBAR2自定义应用 

NBAR2支持使用自定义协议识别自定义应用。自定义协议支持NBAR2当前不支持的协议和应用程序。

这些可能包括：

• 组织特定应用
• 特定地理位置的应用 

NBAR2提供了一种通过命令手动自定义应用的ip nbar custom <myappname>。 

注意：自定义应用优先于内置协议

应用定制有多种类型：

通用协议定制

• HTTP 
• SSL
• DNS

复合：基于多个协议的自定义 — server-name。

第3层/第4层定制

• IPv4地址

• DSCP 值

• TCP/UDP端口

• 流源或目标方向

Switch(config)#ip nbar custom MYHTTP http host *mydomain.com id 10

名为MYSSL的自定义应用示例，该应用使用选择器ID为11的SSL unique-name mydomain.com。

Switch(config)#ip nbar custom MYSSL ssl unique-name *mydomain.com id 11

DNS自定义

NBAR2会检查DNS请求和响应流量，并且可以将DNS响应关联到应用。从DNS响应返回的IP地址会被缓存，并用于与该特定应用相关的后续数据包流。

该命ip nbar customapplication-namedns domain-nameidapplication-id 令用于DNS自定义。要扩展应用，请使用命令ip nbar custom  application-name dns domain-name  domain-name  extends existing-application。

名为MYDNS的自定义应用示例，该应用使用具有选择器ID 12的DNS域名“mydomain.com”。

Switch(config)#ip nbar custom MYDNS dns domain-name *mydomain.com id 12

复合定制 

名为MYDOMAIN的示例自定义应用，它使用选择器ID为13的HTTP、SSL或DNS域名mydomain.com。

Switch(config)#ip nbar custom MYDOMAIN composite server-name *mydomain.com id 13

L3/L4定制

Switch(config)#ip nbar custom LAYER4CUSTOM transport tcp id 14
Switch(config-custom)#ip address 10.56.1.10 10.56.1.11
Switch(config-custom)#dscp ef
Switch(config-custom)#end

监控自定义应用

要监控自定义应用，请使用列出的show命令：

Switch#show ip nbar protocol-id | inc Custom
LAYER4CUSTOM             14            Custom
MYDNS                    12            Custom
MYDOMAIN                 13            Custom
MYHTTP                   10            Custom
MYSSL                    11            Custom

Switch#show ip nbar protocol-id MYSSL
Protocol Name             id            type
----------------------------------------------
MYSSL                    11            Custom

Switch#show ip nbar control-plane
NGCP Status:
============

graph sender info:
NBAR state is ACTIVATED
NBAR config send mode is ASYNC
NBAR config state is READY

NBAR update ID 3
NBAR batch ID ACK 3
NBAR last batch ID ACK clients 1 (ID: 4)
Active clients 1 (ID: 4)
NBAR max protocol ID ever 1935
NBAR Control-Plane Version: 37

<snip>

Switch#show platform software fed switch active wdavc function wdavc_stile_cp_show_info_ui

Is DP activated : TRUE
MSG ID : 3
Maximum number of flows: 262144
Current number of graphs: 1
Requests queue state : WDAVC_STILE_REQ_QUEUE_STATE_UP
Number of requests in queue : 0
Max number of requests in queue (TBD): 1
Counters:
activate_msgs_rcvd : 1
graph_download_begin_msgs_rcvd : 3
stile_config_msgs_rcvd : 1584
graph_download_end_msgs_rcvd : 3
deactivate_msgs_rcvd : 0
intf_proto_disc_msgs_rcvd : 1
intf_attach_msgs_rcvd : 2
cfg_response_msgs_sent : 1593
num_of_handle_msg_from_fmanfp_events : 1594
num_of_handle_request_from_queue : 1594
num_of_handle_process_requests_events : 1594

Switch#show platform software fed switch active wdavc flows

CurrFlows=1, Watermark=1

IX |IP1           |IP2           |PORT1|PORT2|L3   |L4   |VRF |TIMEOUT|APP     |TUPLE|FLOW     |IS FIF  |BYPASS|FINAL |#PKTS |BYPASS
   |              |              |     |     |PROTO|PROTO|VLAN|SEC    |NAME    |TYPE |TYPE     |SWAPPED |      |      |      |PKT
--------------------------------------------------------------------------------------
1  |192.168.100.2 |192.168.200.2 |68   |67   |1    |17   |0   |360    |unknown |Full |Real Flow|Yes     |True |True   |40    |40

Switch#show platform software fed switch active wdavc function wdavc_ft_show_all_flows_seg_ui
CurrFlows=1, Watermark=1

IX |IP1           |IP2          |PORT1|PORT2|L3   |L4   |VRF |TIMEOUT|APP     |TUPLE |FLOW     |IS FIF  |BYPASS|FINAL |#PKTS |BYPASS
   |              |             |     |     |PROTO|PROTO|VLAN|SEC    |NAME    |TYPE  |TYPE     |SWAPPED |      |      |      |PKT
---------------------------------------------------------------------------------------------------------------------------------------------------------------------
1  |192.168.100.2 |192.168.200.2|68   |67   |1    |17   |0   |360    |unknown |Full  |Real Flow|Yes     |True  |True  |40    |40

   SEG IDX |I/F ID |OPST I/F |SEG DIR |FIF DIR |Is SET |DOP ID |NFL HDL  |BPS PND |APP PND |FRST TS  |LAST TS  |BYTES   |PKTS  |TCP FLGS
   ------------------------------------------------------------------------------------------------------------------------------------
   0       |9      |----     |Ingress |True    |True   |0      |50331823 |0       |0       |177403000|191422000|24252524|70094 |0

Switch#show platform software fed switch active fnf flow-record asic 3 start-index 0 num-flows 1
1 flows starting at 0 for asic 3:-------------------------------------------------
Idx 175 :
{90, ALR_INGRESS_NET_FLOW_ACL_LOOKUP_TYPE1 = 0x01}
{91, ALR_INGRESS_NET_FLOW_ACL_LOOKUP_TYPE2 = 0x01}
{0, ALR_INGRESS_NFL_SPECIAL1 = 0x00}
{11 PAD-UNK = 0x0000}
{94, PHF_INGRESS_DEST_PORT_OR_ICMP_OR_IGMP_OR_PIM_FIRST16B = 0x0043}
{93, PHF_INGRESS_SRC_PORT = 0x0044}
{67, PHF_INGRESS_IPV4_DEST_ADDRESS = 0xc0a8c802}
{68, PHF_INGRESS_IPV4_SRC_ADDRESS = 0xc0a86402}
{56, PHF_INGRESS_L3_PROTOCOL = 0x11}
FirstSeen = 0x2b4fb, LastSeen = 0x2eede, sysUptime = 0x2ef1c
PKT Count = 0x000000000001216f, L2ByteCount = 0x0000000001873006

Switch#show platform software fed switch active wdavc function wdavc_ft_show_stats_ui | inc err|warn|fail
Bucket linked exceed max error : 0
extract_tuple_non_first_fragment_warn : 0
ft_client_err_alloc_fail : 0
ft_client_err_detach_fail : 0
ft_client_err_detach_fail_intf_attach : 0
ft_inst_nfl_clock_sync_err : 0
ft_ager_err_invalid_timeout : 0
ft_intf_err_alloc_fail : 0
ft_intf_err_detach_fail : 0
ft_inst_err_unreg_client_all : 0
ft_inst_err_inst_del_fail : 0
ft_flow_seg_sync_nfl_resp_pend_del_warn : 0
ager_sm_cb_bad_status_err : 0
ager_sm_cb_received_err : 0
ft_ager_to_time_no_mask_err : 0
ft_ager_to_time_latest_zero_ts_warn : 0
ft_ager_to_time_seg_zero_ts_warn : 0
ft_ager_to_time_ts_bigger_curr_warn : 0
ft_ager_to_ad_nfl_resp_error : 0
ft_ager_to_ad_req_all_recv_error : 0
ft_ager_to_ad_req_error : 0
ft_ager_to_ad_resp_error : 0
ft_ager_to_ad_req_restart_timer_due_err : 0
ft_ager_to_flow_del_nfl_resp_error : 0
ft_ager_to_flow_del_all_recv_error : 0
ft_ager_to_flow_del_req_error : 0
ft_ager_to_flow_del_resp_error : 0
ft_consumer_timer_start_error : 0
ft_consumer_tw_stop_error : 0
ft_consumer_memory_error : 0
ft_consumer_ad_resp_error : 0
ft_consumer_ad_resp_fc_error : 0
ft_consumer_cb_err : 0
ft_consumer_ad_resp_zero_ts_warn : 0
ft_consumer_ad_resp_zero_pkts_bytes_warn : 0
ft_consumer_remove_on_count_zero_err : 0
ft_ext_field_ref_cnt_zero_warn : 0
ft_ext_gen_ref_cnt_zero_warn : 0

Switch#show platform software fed switch active wdavc function wdavc_stile_stats_show_ui | inc err
find_flow_error : 0
add_flow_error : 0
remove_flow_error : 0
detach_fo_error : 0
is_forward_direction_error : 0
set_flow_aging_error : 0
ft_process_packet_error : 0
sys_meminfo_get_error : 0

Switch#show platform software fed switch active punt cpuq 21 | inc received
Packets received from ASIC : 63

Switch#show platform software fed switch active wdavc function fed_wdavc_show_ots_stats_ui
OTS Limits
----------------------------------------------
ots_queue_max : 20000
emer_bypass_ots_queue_stress : 4000
emer_bypass_ots_queue_normal : 200
OTS Statistics
----------------------------------------------
total_requests : 40
total_non_wdavc_requests : 0
request_empty_field_data_error : 0
request_invalid_di_error : 0
request_buf_coalesce_error : 0
request_invalid_format_error : 0
request_ip_version_error : 0
request_empty_packet_error : 0
memory_allocation_error : 0
emergency_bypass_requests_warn : 0
dropped_requests : 0
enqueued_requests : 40
max_ots_queue : 0

Switch#show platform software fed switch active fnf sw-table-sizes asic 3 shadow 0

---------------------------------
Global Bank Allocation
---------------------------------
Ingress Banks : Bank 0
Egress Banks : Bank 1
---------------------------------
Global flow table Info
INGRESS usedBankEntry 1 usedOvfTcamEntry 0
EGRESS usedBankEntry 0 usedOvfTcamEntry 0 <-- 256 means TCAM entries are full
---------------------------------
Flows Statistics
INGRESS TotalSeen=1 MaxEntries=1 MaxOverflow=0
EGRESS TotalSeen=0 MaxEntries=0 MaxOverflow=0

---------------------------------
Partition Table
---------------------------------
## Dir Limit CurrFlowCount OverFlowCount MonitoringEnabled
 0 ING 0 0 0 0
 1 ING 16640 1 0 1
 2 ING 0 0 0 0
 3 ING 16640 0 0 0
 4 ING 0 0 0 0
 5 ING 8192 0 0 1
 6 ING 0 0 0 0
 7 ING 0 0 0 0
 8 ING 0 0 0 0
 9 ING 0 0 0 0
10 ING 0 0 0 0
11 ING 0 0 0 0
12 ING 0 0 0 0
13 ING 0 0 0 0
14 ING 0 0 0 0
15 ING 0 0 0 0
 0 EGR 0 0 0 0
 1 EGR 16640 0 0 1
 2 EGR 0 0 0 0
 3 EGR 16640 0 0 0
 4 EGR 0 0 0 0
 5 EGR 8192 0 0 1
 6 EGR 0 0 0 0
 7 EGR 0 0 0 0
 8 EGR 0 0 0 0
 9 EGR 0 0 0 0
10 EGR 0 0 0 0
11 EGR 0 0 0 0
12 EGR 0 0 0 0
13 EGR 0 0 0 0
14 EGR 0 0 0 0
15 EGR 0 0 0 0

C9300(config)#et-analytics
C9300(config-et-analytics)#ip flow-export destination 172.16.18.1 2055

C9300(config)#flow record FNF-RECORD
C9300(config-flow-record)#match ipv4 protocol
C9300(config-flow-record)#match ipv4 source address
C9300(config-flow-record)#match ipv4 destination address
C9300(config-flow-record)#match transport source-port
C9300(config-flow-record)#match transport destination-port
C9300(config-flow-record)#collect counter bytes long
C9300(config-flow-record)#collect counter packets long
C9300(config-flow-record)#collect timestamp absolute first
C9300(config-flow-record)#collect timestamp absolute last

C9300(config)#flow exporter FNF-EXPORTER
C9300(config-flow-exporter)#destination 172.16.18.1
C9300(config-flow-exporter)#transport udp 2055
C9300(config-flow-exporter)#template data timeout 30
C9300(config-flow-exporter)#option interface-table
C9300(config-flow-exporter)#option application-table timeout 10
C9300(config-flow-exporter)#exit

C9300(config)#flow monitor FNF-MONITOR
C9300(config-flow-monitor)#exporter FNF-EXPORTER
C9300(config-flow-monitor)#record FNF-RECORD
C9300(config-flow-monitor)#end

C9300(config)#int range g1/0/3-4
C9300(config-if-range)#ip flow mon FNF-MONITOR in
C9300(config-if-range)#ip flow mon FNF-MONITOR out
C9300(config-if-range)#end

C9300(config)#interface range g1/0/3-4
C9300(config-if-range)#et-analytics enable

C9300#show flow monitor eta-mon
Flow Monitor eta-mon:
Description: User defined
Flow Record: eta-rec
Flow Exporter: eta-exp
Cache:
Type: normal (Platform cache)
Status: allocated
Size: 10000 entries
Inactive Timeout: 15 secs
Active Timeout: 1800 secs

C9300#show flow monitor FNF-MONITOR cache
Cache type: Normal (Platform cache)
Cache size: 10000
Current entries: 4

Flows added: 8
Flows aged: 4
- Inactive timeout ( 15 secs) 4

IPV4 SOURCE ADDRESS: 192.168.10.2
IPV4 DESTINATION ADDRESS: 192.168.20.2
TRNS SOURCE PORT: 0
TRNS DESTINATION PORT: 0
IP PROTOCOL: 1
counter bytes long: 500
counter packets long: 5
timestamp abs first: 21:53:23.390
timestamp abs last: 21:53:23.390

IPV4 SOURCE ADDRESS: 192.168.20.2
IPV4 DESTINATION ADDRESS: 192.168.10.2
TRNS SOURCE PORT: 0
TRNS DESTINATION PORT: 0
IP PROTOCOL: 1
counter bytes long: 500
counter packets long: 5
timestamp abs first: 21:53:23.390
timestamp abs last: 21:53:23.390

IPV4 SOURCE ADDRESS: 192.168.20.2
IPV4 DESTINATION ADDRESS: 192.168.10.2
TRNS SOURCE PORT: 0
TRNS DESTINATION PORT: 0
IP PROTOCOL: 1
counter bytes long: 500
counter packets long: 5
timestamp abs first: 21:53:23.390
timestamp abs last: 21:53:23.390

IPV4 SOURCE ADDRESS: 192.168.10.2
IPV4 DESTINATION ADDRESS: 192.168.20.2
TRNS SOURCE PORT: 0
TRNS DESTINATION PORT: 0
IP PROTOCOL: 1
counter bytes long: 500
counter packets long: 5
timestamp abs first: 21:53:23.390
timestamp abs last: 21:53:23.390

C9300#show flow exporter eta-exp statistics
Flow Exporter eta-exp:
Packet send statistics (last cleared 03:05:32 ago):
Successfully sent: 3 (3266 bytes)

Client send statistics:
Client: Flow Monitor eta-mon
Records added: 4
- sent: 4
Bytes added: 3266
- sent: 3266

C9300#show platform software fed switch active fnf et-analytics-flows

ET Analytics Flow dump

=================
Total packets received : 20
Excess packets received : 0
Excess syn received : 0
Total eta records added : 4
Current eta records : 0
Total eta splt exported : 2
Total eta IDP exported : 2

C9300#show platform software et-analytics interfaces
ET-Analytics interfaces
GigabitEthernet1/0/3
GigabitEthernet1/0/4

ET-Analytics VLANs

C9300#show plat soft et-analytics global
ET-Analytics Global state
=========================
All Interfaces : Off
IP Flow-record Destination : 10.31.126.233 : 2055
Inactive timer : 15

ET-Analytics interfaces
GigabitEthernet1/0/3
GigabitEthernet1/0/4

ET-Analytics VLANs