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Cisco 4000 Series Integrated Services Routers Overview
 Note |
Cisco IOS XE Cupertino 17.7.1a is the first release for Cisco 4000 Series Integrated Services Routers in the Cisco IOS XE 17.7.x release series. |
The Cisco 4000 Series ISRs are modular routers with LAN and WAN connections that can be configured by means of interface modules, including Cisco Enhanced Service Modules (SM-Xs), and Network Interface Modules (NIMs).
The following table lists the router models that belong to the Cisco 4000 Series ISRs.
|
Cisco 4400 Series ISR |
Cisco 4300 Series ISR |
Cisco 4200 Series ISR |
|---|---|---|
|
Cisco 4431 ISR |
Cisco 4321 ISR |
Cisco 4221 ISR |
|
Cisco 4451-X ISR |
Cisco 4331 ISR |
|
|
Cisco 4461 ISR |
Cisco 4351 ISR |
Note |
Starting with Cisco IOS XE Amsterdam 17.3.2 release, with the introduction of Smart Licensing Using Policy, even if you configure a hostname for a product instance or device, only the Unique Device Identifier (UDI) is displayed. This change in the display can be observed in all licensing utilities and user interfaces where the hostname was displayed in earlier releases. It does not affect any licensing functionality. There is no workaround for this limitation. The licensing utilities and user interfaces that are affected by this limitation include only the following:
|
Product Field Notice
Cisco publishes Field Notices to notify customers and partners about significant issues in Cisco products that typically require an upgrade, workaround or other user action. For more information, see https://www.cisco.com/c/en/us/support/web/field-notice-overview.html.
We recommend that you review the field notices to determine whether your software or hardware platforms are affected. You can access the field notices from https://www.cisco.com/c/en/us/support/web/tsd-products-field-notice-summary.html#%7Etab-product-categories.
System Requirements
The following are the minimum system requirements:
Note |
There is no change in the system requirements from the earlier releases. |
-
Memory: 4 GB DDR3 up to 32 GB
-
Hard Drive: 200 GB or higher (Optional). The hard drive is only required for running services such as Cisco ISR-WAAS.
-
Flash Storage: 4 GB to 32 GB
-
NIMs and SM-Xs: Modules (Optional)
-
NIM SSD (Optional)
For more information, see the Cisco 4000 Series ISRs Data Sheet.
Note |
For more information on the Cisco WAAS IOS-XE interoperability, refer to the WAAS release notes: https://www.cisco.com/c/en/us/support/routers/wide-area-application-services-waas-software/products-release-notes-list.html. |
Determining the Software Version
You can use the following commands to verify your software version:
-
For a consolidated package, use the show version command
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For individual sub-packages, use the show version installed command
Upgrading to a New Software Release
To install or upgrade, obtain a Cisco IOS XE 17.7.x consolidated package (image) from Cisco.com. You can find software images at http://software.cisco.com/download/navigator.html. To run the router using individual sub-packages, you also must first download the consolidated package and extract the individual sub-packages from a consolidated package.
Note |
When you upgrade from one Cisco IOS XE release to another, you may see %Invalid IPV6 address error in the console log file. To rectify this error, enter global configuration mode, and re-enter the missing IPv6 alias commands and save the configuration. The commands will be persistent on subsequent reloads. |
For more information on upgrading the software, see the Installing the Software section of the Software Configuration Guide for the Cisco 4000 Series ISRs.
Recommended Firmware Versions
The following table lists the recommended ROMMON and CPLD versions for Cisco IOS XE 17.2.x onwards releases.
|
Cisco 4000 Series ISRs |
Existing ROMMON |
Cisco Field-Programmable Devices |
CCO URL for the CPLD Image |
|---|---|---|---|
|
Cisco 4461 ISR |
16.12(2r) |
21102941 |
|
|
Cisco 4451-X ISR |
16.12(2r) |
19042950 |
|
|
Cisco 4431 ISR |
16.12(2r) |
19042950 |
|
|
Cisco 4351 ISR |
16.12(2r) |
19040541 |
|
|
Cisco 4331 ISR |
16.12(2r) |
19040541 |
|
|
Cisco 4321 ISR |
16.12(2r) |
19040541 |
|
|
Cisco 4221 ISR |
16.12(2r) |
19042420 |
Note |
Upgrading Field-Programmable Hardware Devices
The hardware-programmable firmware is upgraded when Cisco 4000 Series ISR contains an incompatible version of the hardware-programmable firmware. To do this upgrade, a hardware-programmable firmware package is released to customers.
Generally, an upgrade is necessary only when a system message indicates one of the field-programmable devices on the Cisco 4000 Series ISR needs an upgrade, or a Cisco technical support representative suggests an upgrade.
From Cisco IOS XE Release 3.10S onwards, you must upgrade the CPLD firmware to support the incompatible versions of the firmware on the Cisco 4000 Series ISR. For upgrade procedures, see the Upgrading Field-Programmable Hardware Devices for Cisco 4000 Series ISRs.
Feature Navigator
You can use Cisco Feature Navigator to find information about feature, platform, and software image support. To access Cisco Feature Navigator, go to http://www.cisco.com/go/cfn. An account on cisco.com is not required.
New and Changed Information
New and Changed Hardware Features
There are no new hardware features for this release.
New and Changed Software Features
|
Feature |
Description |
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|---|---|---|---|
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The Cisco ThousandEyes Enterprise Agent Application introduces the functionality to inherit the Domain Name Server (DNS) information from the device. With this enhancement, the DNS field in vManage ThousandEyes feature template is an optional parameter. |
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This feature introduces Flexible NetFlow (FNF) support on Bridge Domain Virtual IP Interfaces (BD-VIF). Flexible Netflow provides improved optimization and performance, enhanced security, and increased flexibility and scalability to the network. You can configure FNF on a BD-VIF using the ip flow monitor command. |
|||
|
Marking Packets Sent Via ATM Interface With COS (BITP) Value |
This feature introduces the set cos 3 command using which, you can configure the router to mark the packets with a cos (bitp) value. The marked packets are indicators of priority for the user and based on the priority level, bandwidth will be allocated. |
||
|
The show ip multicast overlay-mapping command displays an underlay group address from the overlay group address which is used to troubleshoot or configure the network. The output includes the underlay group address that is within the configured SSM (Source Specific Multicast) address range. |
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|
This feature supports the Next Generation Encryption (NGE) cipher suites for secure voice signaling and secure media. These cipher suites are applicable for both STCAPP analog phone and SCCP DSPFarm conferencing service. These cipher suites provide confidentiality, integrity, and authenticity to validate messages. |
|||
|
You can now configure Cisco 4000 Series Integrated Services Router to accept remote user access to enterprise networks. This remote access is provided through a Secure Socket Layer (SSL)-enabled SSL VPN gateway that permits remote users to establish a secure VPN tunnel. |
|||
|
Cisco Unified Border Element (CUBE) Features |
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|
From Cisco IOS XE Cupertino 17.7.1a, CUBE can use WebSockets to handle media forking with Cloud Speech Services on the Cisco 4431, 4451-X, and 4461 Integrated Services Routers platforms, apart from the existing support on Cisco Catalyst 8000V Edge platform. |
|||
|
From Cisco IOS XE Cupertino 17.7.1a, YANG models are available to configure and manage CUBE. |
|||
|
Programmability Features |
|||
|
Converting IOS Commands to XML |
This feature helps to automatically translate IOS commands into relevant NETCONF-XML or RESTCONF/JSON request messages. |
||
|
YANG Model Version 1.1 |
Cisco IOS XE Cupertino 17.7.1a uses the YANG version 1.0; however, you can download the YANG version 1.1 from GitHub at https://github.com/YangModels/yang/tree/master/vendor/cisco/xe folder. For inquiries related to the migrate_yang_version.py script or the Cisco IOS XE YANG migration process, send an email to xe-yang-migration@cisco.com. |
||
|
ZTP Configuration through YANG |
ZTP is enabled through YANG models when NETCONF is enabled. |
||
|
Smart Licensing Using Policy Features |
|||
|
Ability to save authorization code request and return in a file and simpler upload in the CSSM Web UI |
If your product instance is in an air-gapped network, you can now save an SLAC request in a file on the product instance. The SLAC request file must be uploaded to the CSSM Web UI. You can then download the file containing the SLAC code and install it on the product instance. You can also upload a return request file in a similar manner. With this new method you do not have to gather and enter the required details on the CSSM Web UI to generate an SLAC. You also do not have to locate the product instance in the CSSM Web UI to return an authorization code. In the CSSM Web UI, you must upload the SLAC request or return file in the same way as you upload a RUM report. In the required Smart Account, navigate to Reports → Usage Data Files. See: No Connectivity to CSSM and No CSLU, Workflow for Topology: No Connectivity to CSSM and No CSLU, Saving a SLAC Request on the Product Instance, Removing and Returning an Authorization Code, Uploading Data or Requests to CSSM and Downloading a File. |
||
|
Account information included in the ACK and show command outputs |
A RUM acknowledgement (ACK) includes the Smart Account and Virtual Account that was reported to, in CSSM. You can then display account information using various show commands. The account information that is displayed is always as per the latest available ACK on the product instance. See: show license summary, show license status, show license tech. |
||
|
CSLU support for Linux |
CSLU can now be deployed on a machine (laptop or desktop) running Linux. See: CSLU, Workflow for Topology: Connected to CSSM Through CSLU, Workflow for Topology: CSLU Disconnected from CSSM. |
||
|
Factory-installed trust code |
For new hardware and software orders, a trust code is now installed at the time of manufacturing.
|
||
|
RUM Report optimization and availability of statistics |
RUM report generation and related processes have been optimized. This includes a reduction in the time it takes to process RUM reports, better memory and disk space utilization, and visibility into the RUM reports on the product instance (how many there are, the processing state each one is in, if there are errors in any of them, and so on). See: RUM Report and Report Acknowledgement, Upgrades, Downgrades, show license rum, show license all, show license tech. |
||
|
Support for trust code in additional topologies |
A trust code is automatically obtained in topologies where the product instance initiates the sending of data to Cisco Smart License Utility (CSLU)and in topologies where the product instance is in an air-gapped network. See: Trust Code, Connected to CSSM Through CSLU, Tasks for Product Instance-Initiated Communication, CSLU Disconnected from CSSM, Tasks for Product Instance-Initiated Communication, No Connectivity to CSSM and No CSLU, Workflow for Topology: No Connectivity to CSSM and No CSLU. |
||
|
Support to collect software version in a RUM report |
If version privacy is disabled (no license smart privacy version global configuration command), the Cisco IOS-XE software version running on the product instance and the Smart Agent version information is included in the RUM report. |
||
Configure the Router for Web User Interface
This section explains how to configure the router to access Web User Interface. Web User Interface requires the following basic configuration to connect to the router and manage it.
-
An HTTP or HTTPs server must be enabled with local authentication.
-
A local user account with privilege level 15 and accompanying password must be configured.
-
Vty line with protocol SSH/Telnet must be enabled with local authentication. This is needed for interactive commands.
-
For more information on how to configure the router for Web User Interface, see Cisco 4000 Series ISRs Software Configuration Guide, Cisco IOS XE 17.
Resolved and Open Bugs
This section provides information about the bugs in Cisco 4000 Series Integrated Services Routers and describe unexpected behavior. Severity 1 bugs are the most serious bugs. Severity 2 bugs are less serious. Severity 3 bugs are moderate bugs. This section includes severity 1, severity 2, and selected severity 3 bugs.
The open and resolved bugs for this release are accessible through the Cisco Bug Search Tool. This web-based tool provides you with access to the Cisco bug tracking system, which maintains information about bugs and vulnerabilities in this product and other Cisco hardware and software products. Within the Cisco Bug Search Tool, each bug is given a unique identifier (ID) with a pattern of CSCxxNNNNN, where x is any letter (a-z) and N is any number (0-9). The bug IDs are frequently referenced in Cisco documentation, such as Security Advisories, Field Notices and other Cisco support documents. Technical Assistance Center (TAC) engineers or other Cisco staff can also provide you with the ID for a specific bug. The Cisco Bug Search Tool enables you to filter the bugs so that you only see those in which you are interested.
In addition to being able to search for a specific bug ID, or for all bugs in a product and release, you can filter the open and/or resolved bugs by one or more of the following criteria:
-
Last modified date
-
Status, such as fixed (resolved) or open
-
Severity
-
Support cases
You can save searches that you perform frequently. You can also bookmark the URL for a search and email the URL for those search results.
Note |
If the bug that you have requested cannot be displayed, this may be due to one or more of the following reasons: the bug ID does not exist, the bug does not have a customer-visible description yet, or the bug has been marked Cisco Confidential. |
Resolved and Open Bugs in Cisco 4000 Series Integrated Services Routers
Resolved Bugs - Cisco IOS XE 17.7.2
All resolved bugs for this release are available in the Cisco Bug Search Tool.
|
Bug ID |
Description |
|---|---|
|
Router rebooted due to watchdogs after issuing the commands sh crypto mib ipsec commands. |
|
|
E1 configurations (under Serial interface) lost after reload. |
|
|
CDP/LLDP not working when 10GE interface enabled with MACsec. |
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IKEv2 Deprecated Ciphers denied by Crypto Engine CDSL - PSB Security Compliance - DES, 3DES, DH1/2/5. |
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Sub-interface may not forward traffic after a reload. |
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MGCP automatic configuration fails after IOS-XE upgrade. |
|
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MACsec not working on subinterfaces using dot1q >255 between devices. |
|
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Router crash due to stuck thread with appnav-xe dual controller mode. |
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Router may crash due to Crypto IKMP process. |
|
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IKEv2 Deprecated Ciphers denied by Crypto Engine CDSL - PSB Security Compliance - MD5, SHA1. |
|
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DMVPN over DMVPN with IPSEC - return packets are dropped with BadIpChecksum. |
|
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CoS preservation not working for the services EVPL and EPL tunnel. |
|
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ZBFW: Optimized policy traffic failure due to OG edit error. |
|
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Flapping bidirectional/unidirectional packet capture option with IPv4 filter for long time failed. |
Open Bugs - Cisco IOS XE 17.7.2
All open bugs for this release are available in the Cisco Bug Search Tool.
|
Bug ID |
Description |
|---|---|
|
Peer MSS value showing incorrect |
|
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Source address translation for multicast traffic fails with route-map. |
|
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Excessive packet loss observed during DMVPN tunnel flapping. |
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When configration ip nat inside/outside on VASI intereface, ack/seq number abnormal. |
|
|
Large number of IPSec tunnel flapping occurs when underlay is restored. |
|
|
yang-management process confd is not running, controller mode 17.6.2a |
|
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QFP core due to NAT scaling issue. |
|
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NAT translation stops suddenly (ip nat inside doesn't work). |
|
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Device reload unexpectedly two times when enter netflow show command. |
|
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BQS Failure - QoS policy is missing in hardware for some Virtual-Access tunnels after session flaps. |
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SCCP auto-configuration issues with multiple protocols. |
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Throughput drop of 10% from 17.3 to 17.6 Release. |
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Support IGMP on voice VLAN. |
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Device running 17.x.x crashes due to CPUHOG when walking ciscoFlashMIB. |
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UCODE crash with mpass function. |
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E1 R2 - dnis-digits CLI not working. |
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Crash due to IOSXE-WATCHDOG due to management port traffic storm. |
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Device crash for stuck threads in cpp on packet processing. |
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The device reload unexpectedly due to Cellular CNM process. |
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CoR intercepted DNS reply packets dropped with drop code 52 (FirewallL4Insp) if UTD enabled also. |
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CPP uCode crash due to ipc congestion from dp to cp. |
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Device incorrectly drops ip fragments due to reassembly timeout. |
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Interface comes up with only an SFP inserted. |
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NAT translations do not work for FTP traffic. |
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Assert failure while showing FTM (Forwarding Traffic Manager) data in NH TYPE switch case. |
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"Revocation-check crl none" does not failover to NONE DNAC-CA. |
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CSDL failure: IPSec QM Use of DES by encrypt proc is denied. |
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NAT translation don’t show (or use) correct timeout value for an established TCP session. |
|
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"Total output drops" counter in "show interface" on Port-channel doesn't work properly. |
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Traceback: fman_fp_image core after clearing packet-trace conditions . |
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Evaluation of IOS-XE for OpenSSL CVE-2022-0778 and CVE-2021-4160. |
|
|
Static mapping for the hub lost on one of the spokes. |
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|
ZBFW seeing the SIP ALG incorrectly dropping traffic and resetting connection. |
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CSDL failure: Use of MD5 by IPSEC key engine is denied. |
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FTP data traffic broken when UTD IPS enabled in both service VPN. |
|
|
Device after the upgrade starts dropping GRE tunnel packets. |
Resolved Bugs - Cisco IOS XE 17.7.1a
All resolved bugs for this release are available in the Cisco Bug Search Tool.
|
Caveat ID Number |
Description |
|---|---|
|
VG400 crashed when changing Debug Level. |
|
|
CISCO-CLASS-BASED-QOS-MIB does not work with LTE Cellular interface on ISR1100X after reload. |
|
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Hostname not allowed beginning with numbers. |
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Telemetry: IOS-XE Controller crashes after using 'show telemetry ietf subscription all' command. |
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IOS-XE router may experience unexpected reboot with X25 RBP. |
|
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"switchport trunk native vlan xx" gets removed when upgrading from 16.12.x to 17.3.3. |
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ip pim rp-candidate command removed after reload when group list is configured. |
|
|
Call Placing issue from SCCP phones. |
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|
QoS policy update with "random-detect dscp" configuration get rejected on device side. |
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Large tx/rx rate on Dialer interface in show interface output. |
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OSPF summary-address is not generated though candidate exists. |
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Netconf: Logging to syslog stops working in certain scenarios. |
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Route-map corruption when configured using Netconf with ncclient manager. |
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Secure key agent trace levels set to Noise by default. |
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Crypto PKI-CRL-IO process crash when PKI trustpoint is being deleted. |
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Removal of SHA-1 HMAC Impacting ability to SSH. |
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FN980 new signed Telit modem firmware FN980M_38.02.X92 upgrade failed. |
|
|
IOS-XE unable to export elliptic curve key. |
|
|
Crash after reapplying BGP/ attempt to initialize an initialized wavl tree. |
|
|
8500L // 17.6.1a// Unexpected reload due IPV6 UDP fragment header in VxLAN. |
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vManage showing wrong interface status in GUI. |
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Unable to fetch EIGRP prefix, nexthop, omptag, and route origin. |
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17.6: EFT: Replicated EBGP routes from global table replacing native IBGP routes in VRF. |
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RIP Yang [17.7] offset-list with interface config not shown in IOS running-config. |
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Prevent SIP services from being blocked even if license usage ACK was not received. |
Open Bugs - Cisco IOS XE 17.7.1a
All open bugs for this release are available in the Cisco Bug Search Tool.
|
Caveat ID Number |
Description |
|---|---|
|
C8Kv UTD Container does not come up after a reboot. |
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Kernel crash with last reload reason "LocalSoftADR". |
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IPSec tunnel not passing traffic when IPSec tunnel is sourced from VASI interface. |
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VRRP traffic sent while the device boots will congest the interface queue causing taildrops. |
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All ISR4K are showing symmetric in/out traffic on flexible netflow collector. |
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Multicast traffic received over DMVPN tunnel are dropped on RP and not forwarded downstream. |
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Virtual VRRP IP address unreachable from the BACKUP VRRP. |
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IP Community-list config out of sync in SD-WAN and IOS-XE. |
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Memory leak in scaled EIGRP DMVPN implementation due to EIGRP: mgd_timer. |
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E1 configurations (under Serial interface) lost after reload. |
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cEdge: SNMv3 traps failing with initial configuration. |
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Unable to remove the BGP neighbor statement through vManage template. |
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SD-WAN image info not updated in packages.conf when upgrading in autonomous mode. |
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|
Upgrade is failing on an ISR4331 with an UCS-E160S-M3/K9 module installed. |
Related Documentation
Communications, Services, and Additional Information
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Cisco Bug Search Tool
Cisco Bug Search Tool (BST) is a web-based tool that acts as a gateway to the Cisco bug tracking system that maintains a comprehensive list of defects and vulnerabilities in Cisco products and software. BST provides you with detailed defect information about your products and software.
Documentation Feedback
To provide feedback about Cisco technical documentation, use the feedback form available in the right pane of every online document.
Troubleshooting
For the most up-to-date, detailed troubleshooting information, see the Cisco TAC website at https://www.cisco.com/en/US/support/index.html.
Go to Products by Category and choose your product from the list, or enter the name of your product. Look under Troubleshoot and Alerts to find information for the issue that you are experiencing.
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