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Cisco 4400 Series Integrated Services Routers

Release Notes for the Cisco ISR 4400 Series

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Table of Contents

Release Notes for the Cisco ISR 4400 Series

Cisco ISR 4400 Series Overview

Cisco IOS XE 3S Releases and Cisco IOS Release Number Mapping

System Requirements

Determining the Software Version

Upgrading to a New Software Release

Feature Navigator

Limitations and Restrictions

Limitations and Restrictions - Cisco ISR 4451-X Release 3.10S

New Features and Important Notes About Cisco ISR 4400 Series Release 3.13S

New and Changed Information

New Software Features in Cisco ISR 4400 Series Release 3.13.0S

Cisco 1-, 2-, and 4-Port Serial NIM

Cisco Fourth-Generation T1/E1 Voice and WAN Network Interface Modules

Cisco 4-port GE SFP and 1-port 10 GE SFP Service Module

New Features and Important Notes About Cisco ISR 4400 Series Release 3.12S

New and Changed Information

New Software Features in Cisco ISR 4400 Series Release 3.12.0S

Cisco Multi-protocol Synchronous Serial NIM

New Features and Important Notes About Cisco ISR 4451-X Release 3.11S

New and Changed Information

New Software Features in Cisco ISR 4451-X Release 3.11.0S

New Features and Important Notes About Cisco ISR 4451-X Release 3.10S

New and Changed Information

Cisco AppNav Drops TCP Packets during Reboot of Router (Release 3.10.2)

8-Port Cisco Fourth-generation T1/E1 Voice and WAN Network Interface Module (Release 3.10.2)

Software Features in Cisco ISR 4451-X (Release 3.10.0S)

Caveats

Open Caveats - Cisco IOS XE Release 3.13.0S

Resolved Caveats - Cisco IOS XE Release 3.13.0S

Open Caveats - Cisco IOS XE Release 3.12.1S

Resolved Caveats - Cisco IOS XE Release 3.12.1S

Open Caveats - Cisco IOS XE Release 3.12.0S

Resolved Caveats - Cisco IOS XE Release 3.12.0S

Open Caveats - Cisco IOS XE Release 3.11.0S

Resolved Caveats - Cisco IOS XE Release 3.11.0S

Open Caveats - Cisco IOS XE Release 3.10.3S

Resolved Caveats - Cisco IOS XE Release 3.10.3S

Open Caveats - Cisco IOS XE Release 3.10.2S

Resolved Caveats - Cisco IOS XE Release 3.10.2S

Open Caveats - Cisco IOS XE Release 3.10.1S

Resolved Caveats - Cisco IOS XE Release 3.10.1S

Open Caveats - Cisco IOS XE Release 3.10.0S

Resolved Caveats - Cisco IOS XE Release 3.10.0S

Open Caveats - Cisco IOS XE Release 3.9.1S

Related Documentation

Platform-Specific Documentation

Cisco IOS Software Documentation

Obtaining Documentation and Submitting a Service Request

Cisco ISR 4400 Series Overview

The Cisco 4400 Series consists of the Cisco ISR 4451-X, which is a modular router 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).

Cisco IOS XE 3S Releases and Cisco IOS Release Number Mapping

Releases for the Cisco ISR 4400 Series correspond to the Cisco IOS XE releases.

Table 1 lists the mappings between the Cisco IOS XE 3S software releases and their associated Cisco IOS software releases.

 

Table 1 Cisco IOS XE 3S–to–Cisco IOS Release Number Mapping

Cisco IOS XE 3S Release
Cisco IOS Release

3.13S

15.4(3)S

3.12S

15.4(2)S

3.11S

15.4(1)S

3.10S

15.3(3)S

3.9S

15.3(2)S

System Requirements

The following are the minimum system requirements:

  • Memory: 4GB DDR3 up to 16GB
  • Hard Drive: 200GB or higher (Optional). (The hard drive is only required for running services such as Cisco ISR-WAAS.)
  • Flash Storage: 4GB to 32GB
  • NIMs and SM-Xs: Modules (Optional)
  • NIM SSD (Optional)

Determining the Software Version

You can use the following commands to verify your software version:

  • For a consolidated package, use the show version command
  • 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 3S 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 need to first download the consolidated package and extract the individual sub-packages from a consolidated package.

For information about upgrading software, see the “How to Install and Upgrade Software” section in the Software Configuration Guide for the Cisco ISR 4400 Series.

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.

Limitations and Restrictions

The following limitations and restrictions apply to all releases:

Cisco ISR-WAAS and AppNav-XE Service

The Cisco ISR-WAAS/AppNav service requires a system to be configured with a minimum of
8GB of DRAM and 16GB flash storage. For large service profiles, 16GB of DRAM and 32GB flash storage is required.

IPsec Traffic

IPsec traffic is restricted on the Cisco ISR 4451-X. The router has the same IPsec functionality as a Cisco ISR G2. The default behavior of the router will be as follows (unless an HSECK9 license is installed):

If the limit of 225 concurrent IPsec tunnels is exceeded, no more tunnels are allowed and the following error message appears:

%CERM-4-TUNNEL_LIMIT: Maximum tunnel limit of 225 reached for Crypto functionality with securityk9 technology package license.
 

When the throughput value for the inbound (decrypted) traffic exceeds 85Mbps, subsequent IPsec traffic in that direction will be dropped and the following message will be displayed:

%IOSXE-4-PLATFORM:cpp_cp: QFP:0.0 Thread:001 TS:00000001786413378010 %CERM_DP-4-DP_RX_BW_LIMIT: Maximum Rx Bandwidth limit of 85000 Kbps reached for Crypto functionality with securityk9 technology package license.
 

To avoid this restriction and enable full IPsec functionality on the router, install an HSECK9 feature license.

Limitations and Restrictions - Cisco ISR 4451-X Release 3.10S

There is a new “Performance” feature license. This license enables the performance feature, which gives an increased throughput of 2Gbps compared to a default throughput of 1Gbps. The performance feature is part of the ipbasek9 technology package.

Enable the feature by ordering the performance license (part number FL-44-PERF-K9). After the license is installed, it will be displayed as the “throughput” license in Cisco IOS command output.

To configure the feature, use the platform hardware throughput command, as shown in the following example:

Example

Router(config)# platform hardware throughput level ?
1000000 throughput in kbps
2000000 throughput in kbps
 
Router(config)# platform hardware throughput level 2000000

New Features and Important Notes About Cisco ISR 4400 Series Release 3.13S

This section describes new features in Cisco IOS XE 3.13S that are supported on the Cisco ISR 4400 Series routers.

New Software Features in Cisco ISR 4400 Series Release 3.13.0S

The following voice features are supported by the Cisco ISR 4400 Series for Cisco IOS XE Release 3.13S:

Cisco 1-, 2-, and 4-Port Serial NIM

The Cisco 1-, 2-, and 4-port Serial NIMs are multi-protocol synchronous serial network interface modules (NIMs) supported on the Cisco 4400 Series ISRs. The Cisco 1-port, 2-port, and 4-port Serial NIMs expand the capabilities of the router to provide connectivity for synchronous interfaces in a wide range of applications including up to 8Mbps date rate for high speed high-level data link control (HDLC). These capabilities can be utilized as Point-to-Point Cisco HDLC WAN interface or frame relay interface. The Cisco 1-, 2-, and 4-port Serial NIMs have their own serial communication controllers (SCC) and they do not rely on the host router for SCCs. For further information on configuring this NIM, see:

http://www.cisco.com/c/en/us/td/docs/routers/access/interfaces/S_NIM/software/configuration/guide/snim_config.html

Cisco Fourth-Generation T1/E1 Voice and WAN Network Interface Modules

The Cisco Fourth-Generation 1-, 2-, 4- and 8-PortT1/E1Multiflex Trunk Voice and WAN Network Interface Modules (NIMs) are inserted into the NIM slot on the Cisco 4451-X Integrated Services Routers to provide T1, fractional T1, E1, and fractional E1 support for data and voice applications. For further information on configuring this NIM, see:

http://www.cisco.com/c/en/us/td/docs/routers/access/interfaces/NIM/software/configuration/guide/ConfT1E1NIM.html

Cisco 4-port GE SFP and 1-port 10 GE SFP Service Module

The Cisco 4-port GE SFP and 1-port 10 GE SFP Service Module (SM-X-4x1GE-1x10GE) is software-configurable high-speed connectivity routing port service module for the Cisco ISR 4400 Series routers. This service module provides increased density of Ethernet interfaces on the Cisco ISR 4400 Series routers. For further information on configuring this service module, see:

http://www.cisco.com/c/en/us/td/docs/routers/access/interfaces/sm/software/configuration/guide/cfg-6-10ge.html

New Features and Important Notes About Cisco ISR 4400 Series Release 3.12S

This section describes new features in Cisco IOS XE 3.12S that are supported on the Cisco ISR 4400 Series routers.

New Software Features in Cisco ISR 4400 Series Release 3.12.0S

The following features are supported by the Cisco ISR 4400 Series routers for Cisco IOS XE Release 3.12S:

  • Network Synchronization

Support was added for network clocking or synchronization between the router and a NIM such as the Cisco Fourth-Generation T1/E1 Voice and WAN Network Interface Module.

For further information, see the following Cisco document:

Network Synchronization for the Cisco ISR 4400 Series .

  • MPLS Traffic Engineering (TE) - Interarea Tunnels

For further information, see the following Cisco document:

http://www.cisco.com/en/US/docs/ios-xml/ios/mp_te_path_setup/configuration/xe-3s/mp-te-interarea-tun.html

  • MPLS Traffic Engineering (TE) - Class-based Tunnel Selection 

For further information, see the following Cisco document:

http://www.cisco.com/en/US/docs/ios-xml/ios/mp_te_path_setup/configuration/xe-3s/mp-te-tun-select-xe.html

  • Object Groups for ACLs

For further information, see the following Cisco document:

http://www.cisco.com/c/en/us/td/docs/ios/sec_data_plane/configuration/guide/15_1/sec_data_plane_15_1_book/sec_object_group_acl.html

  • Label Switched Multicast (LSM) Multicast Label Distribution Protocol (mLDP) based Multicast VPN (mVPN) support

For further information, see the following Cisco document:

http://www.cisco.com/en/US/docs/routers/asr1000/configuration/guide/chassis/lsmmldp.html

  • onePK Support

For further information, see the following Cisco site:

https://developer.cisco.com/web/onepk/home

  • OTV - Overlay Transport Virtualization

Enable the appxk9 license set on Cisco ISR 4451-X router to configure OTV. For further information, see the following Cisco document:

http://www.cisco.com/en/US/docs/ios-xml/ios/wan_otv/configuration/xe-3s/wan-otv-xe-3s-book.html

Cisco Multi-protocol Synchronous Serial NIM

The Cisco Multi-protocol Synchronous Serial NIM is inserted into the NIM slot of the router and provides connectivity for synchronous interfaces in applications such as the high speed high-level data link control (HDLC) to 8 Mbps. This capability can be utilized as Point-to-Point Cisco HDLC WAN interface or frame relay interface. The NIM software is capable of anti-counterfeit protection and provides periodic system status information. Serial NIMs have their own serial communication controllers (SCCs) and do not rely on the host platform for SCCs. For further information on configuring this NIM, see:

http://www.cisco.com/c/en/us/td/docs/routers/access/interfaces/S_NIM/software/configuration/guide/snim_config.html

New Features and Important Notes About Cisco ISR 4451-X Release 3.11S

This section describes new features in Cisco IOS XE 3.11S that are supported on the Cisco ISR 4451-X and on other platforms.

New Software Features in Cisco ISR 4451-X Release 3.11.0S

The following features are supported by the Cisco ISR 4400 Series for Cisco IOS XE Release 3.11S.

  • Lawful Intercept License Monitoring Support

The enforced lawful intercept license allows the Lawful Intercept (LI) feature to be used.

Lawful Intercept (LI) is the process by which law enforcement agencies conduct electronic surveillance as authorized by judicial or administrative order. For further information on LI, see Introduction to Lawful Intercept .

For further information on using the LI feature, see Lawful Intercept Architecture , in the Cisco User Security Configuration Guide.

For further information on the LI feature license for the Cisco ISR 4451-X, see Feature Licenses , in the Software Configuration Guide for the Cisco 4451-X Integrated Services Router.

  • Cisco Application Visibility and Control (AVC) Support in Cisco IOS XE 3.11S:

For further information, see the following Cisco document:

http://www.cisco.com/en/US/docs/ios/solutions_docs/avc/ios_15.4_1T_ios_xe3_11/avc_user_guide_ios_15.4_1T_iosxe3_11.html

  • Disjoint LISP RLOC Domains Support

For further information, see the following Cisco document:

http://www.cisco.com/en/US/docs/ios-xml/ios/iproute_lisp/configuration/15-mt/irl-isp-support-for-disjoint-rloc-domains.html

  • Enabling ALGs and AICs in Zone-Based Policy Firewalls

For further information, see the following Cisco document:

http://www.cisco.com/en/US/docs/ios-xml/ios/sec_data_zbf/configuration/xe-3s/zbf -enable-alg-aic.html

  • FNF: Prevent Export Storms

For further information, see the following Cisco document:

http://www.cisco.com/en/US/docs/ios-xml/ios/fnetflow/configuration/xe-3s/fnf-prevent-export-storms.html

  • IOS IKEv2 support for AutoReconnect feature of AnyConnect

For further information, see the following Cisco document:

http://www.cisco.com/en/US/docs/ios-xml/ios/sec_conn_ike2vpn/configuration/15-mt/sec-cfg-recon-flex.html

  • IP Tunnel - GRE Key Entropy Support

For further information, see the following Cisco document:

http://www.cisco.com/en/US/docs/ios-xml/ios/interface/configuration/xe-3s/ir-tunls-gre-entropy-xe.html

  • IPV4 ACL Chaining Support

For further information, see the following Cisco document:

http://www.cisco.com/en/US/docs/ios-xml/ios/sec_data_acl/configuration/xe-3s/sec-ip4-acl-chng-sup.html

  • ISIS - Remote LFA FRR

For further information, see the following Cisco document:

http://www.cisco.com/en/US/docs/ios-xml/ios/iproute_isis/configuration/15-2s/irs -rmte-lfa-frr.html

  • LISP ESM Multihop Mobility

For further information, see the following Cisco document:

http://www.cisco.com/en/US/docs/ios-xml/ios/sec_conn_ike2vpn/configuration/15-mt/sec-cfg-recon-flex.html

  • MPLS VPN over mGRE

For further information, see the following Cisco document:

http://www.cisco.com/en/US/docs/ios-xml/ios/interface/configuration/xe-3s/ir-mpl s-vpnomgre-xe.html

  • mVPNv4-mLDP over GREv4

For further information, see the following Cisco document:

http://www.cisco.com/en/US/docs/routers/asr1000/configuration/guide/chassis/lsmmldp.html

  • NBAR2 Integrated Protocol Pack 6.0.0

For further information, see the following Cisco document:

http://www.cisco.com/en/US/docs/ios-xml/ios/qos_nbar/prot_lib/config_library/pp600/nbar-prot-pack600.html

  • OSPF LFA IPFRR Phase 3

For further information, see the following Cisco document:

http://www.cisco.com/en/US/docs/ios-xml/ios/iproute_ospf/configuration/xe-3s//iro-ipfrr-lfa.html

  • Per Tunnel QoS

For further information, see the following Cisco document:

http://www.cisco.com/en/US/docs/ios-xml/ios/sec_conn_dmvpn/configuration/xe-3s/s ec-conn-dmvpn-per-tunnel-qos.html

  • TCP MSS Adjust

For further information, see the following Cisco document:

http://www.cisco.com/en/US/docs/ios/ios_xe/ipapp/configuration/guide/ipapp_tcp_x e.html

  • OSPF IPv4 Remote Loop Free Alternate IP Fast-reroute (Remote LFA IPFRR)

For further information, see the following Cisco document:

http://www.cisco.com/en/US/docs/ios-xml/ios/iproute_ospf/configuration/15-s/iro-ipfrr-lfa.html

  • MPLS VPN over mGRE

For further information, see the following Cisco document:

http://www.cisco.com/en/US/docs/ios-xml/ios/interface/configuration/xe-3s/ir-mpls-vpnomgre-xe.html

  • Label Switched Multicast (LSM) Multicast Label Distribution Protocol (mLDP) based Multicast VPN (mVPN) support

For further information, see the following Cisco document:

http://www.cisco.com/en/US/docs/routers/7600/ios/15S/configuration/guide/7600_15_0s_book.html

  • NBAR2 Integrated Protocol Pack 6.0.0

For further information, see the following Cisco document:

http://www.cisco.com/en/US/docs/ios-xml/ios/qos_nbar/prot_lib/config_library/pp600/nbar-prot-pack600.html

  • Observation Point ID - distinguish metrics from different interfaces

For further information, see the following Cisco document:

http://www.cisco.com/en/US/docs/ios/solutions_docs/avc/ios_15.4_1T_ios_xe3_11/avc_user_guide_ios_15.4_1T_iosxe3_11.html

  • Service Discovery Gateway

For further information, see the following Cisco document:

http://www.cisco.com/en/US/docs/ios-xml/ios/ipaddr_dns/configuration/15-sy/dns-15-sy-book_chapter_0100.html

  • Disk space Monitoring for core files

For further information, see the following Cisco document:

http://www.cisco.com/en/US/docs/routers/access/4400/software/configuration/guide/isr4400swcfg.html

Cisco 6-port GE SFP Service Module

A Cisco 6-port GE SFP service module is a Gigabit Ethernet module that can be inserted into the SM slot of the Cisco ISR 4451-X to provide Gigabit Ethernet features on routable external interfaces. For further information on configuring this service module, see:

Software Configuration Guide for the Cisco 6-port GE SFP Service Module

New Features and Important Notes About Cisco ISR 4451-X Release 3.10S

Cisco AppNav Drops TCP Packets during Reboot of Router (Release 3.10.2)

Dropping TCP Packets During Router Reboot Process in AppNav Controller Group Scenario

For AppNav Controller Group (ACG) scenarios, a new CLI ( service-insertion acg-reload-delay ) provides a time delay before enabling WAN traffic for a router that has just rebooted. During the delay, the router drops all TCP packets passing through the WAN interface. This enables the router to synchronize flows before traffic is enabled, preventing unintended resetting of connections.

8-Port Cisco Fourth-generation T1/E1 Voice and WAN Network Interface Module (Release 3.10.2)

The 8-port Cisco Fourth-generation T1/E1 Voice and WAN Network Interface Module is supported for Cisco IOS XE Release 3.10.2 (SKU: NIM-8CE1T1-PRI).

Software Features in Cisco ISR 4451-X (Release 3.10.0S)

This section describes features supported on the Cisco ISR 4400 Series in Cisco IOS XE 3.10S that are specific to this platform.

Multilink Point-to-point Protocol

For further information, see the following Cisco document:

Multilink PPP Support for the Cisco 4451-X Integrated Services Router .

No Service Password-Recovery

For further information, see the following Cisco document:

Configuring No Service Password-Recovery on the Cisco ISR 4451-X

Caveats

This section provides information about the caveats in Cisco ISR 4400 Series routers, Release 3S. Caveats describe unexpected behavior. Severity 1 caveats are the most serious caveats. Severity 2 caveats are less serious. Severity 3 caveats are moderate caveats. This section includes severity 1, severity 2, and selected severity 3 caveats.

We recommend that you view the field notices for the current release to determine whether your software or hardware platforms are affected. You can access the field notices from the following location:

http://www.cisco.com/en/US/support/tsd_products_field_notice_summary.html

In this section, the following information is provided for each caveat:

The following information is provided for each caveat:

• Symptom - description of what is observed when the caveat occurs.

• Conditions - conditions under which the caveat has been known to occur.

• Workaround - solutions, if available, to counteract the caveat.


NoteIf you have an account on Cisco.com, you can also use the Bug Search Tool to find select caveats of any severity. To reach the Bug Search Tool, log in to Cisco.com and go to
https://tools.cisco.com/bugsearch?referring_site=btk
(If the defect that you have requested cannot be displayed, this may be due to one or more of the following reasons: the defect number does not exist, the defect does not have a customer-visible description yet, or the defect has been marked Cisco Confidential.)


Open Caveats - Cisco IOS XE Release 3.13.0S

  • CSCun89655

Symptom:

With high traffic, EIGRP/OSPF relationship goes down resulting in removal of learned routes.

Conditions:

This problem occurs with DMVPN tunnel configuration.

Workaround:

There is no workaround.

  • CSCuo85709

Symptom:

SFPs on Cisco ISR 4451 fail during the installation.

Conditions:

This problem occurs with FINISAR and AVAGO SFPs.

Workaround:

SFP fails each time router boots up and during the first time installation. All SFPs are not affected.

Recover SFPs after bypassing authentication check on SFPs.

Router# configure terminal
Router(config)# service unsupported-transceiver
Router(config)# exit
Router# hw-module subslot 0/0 reload
 
  • CSCup04886

Symptom:

In a Cisco ISR 4430 installed with two power supplies, if one of the power supply is removed and re-inserted, the output of the show inventory command displays incorrect values.

Conditions:

This problem occurs when one of the two power supplies is removed from a Cisco ISR 4430 and an OIR command is issued.

Workaround:

There is no workaround.

  • CSCuo97381

Symptom:

When configuring eight or more sub-interfaces on Cisco ISR 4450 and enabling HSRP, the following message is displayed:

%IOSXE_RP_SPA-3-MAC_FILTER_ADD_FAIL: All the available 8 mac filters for interface have been consumed. Failed to add 0000.0c07.ac01 for interface GigabitEthernet0/0/0
 

Conditions:

This issue occurs when you configure the same group number HSRP under sub-interfaces of integrated Gigabit interfaces on a Cisco ISR 4451 router.

Workaround:

Use VRRP with the same group number.

  • CSCun65995

Symptom:

The E-Series Server module shows memory leak issue and the router displays the following error message: NGIO control packet loss detected .
As a result, the router sets the module in an “out of service” state.

Conditions:

This problem occurs when an E-Series Server module with CIMC Release 2.1 or 2.2 is installed in a Cisco ISR 4451-X router with Cisco IOS XE 3.13 or 15.4(3)S release.

Workaround:

Upgrade CIMC to Release 2.3.1.

Resolved Caveats - Cisco IOS XE Release 3.13.0S

  • CSCuo97381

Symptom:

When configuring eight or more sub-interfaces on Cisco ISR 4450 and enabling HSRP, the following message is displayed:

%IOSXE_RP_SPA-3-MAC_FILTER_ADD_FAIL: All the available 8 mac filters for interface have been consumed. Failed to add 0000.0c07.ac01 for interface GigabitEthernet0/0/0

Conditions:

This issue occurs when you configure the same group number HSRP under sub-interfaces of integrated Gigabit interfaces on a Cisco ISR 4451 router.

Workaround:

Use VRRP with same group number.

  • CSCul98291

Symptom:

A crash on the router, due to low memory, fails to include IO related memory commands to assist in diagnosing the cause of the device running out of memory.

Condition:

This problem occurs when the router crashes due to low memory.

Workaround:

Configure the exception crashinfo dump command and troubleshoot the memory issue.

  • CSCum68577

Symptom:

UCSE sub-interface configuration is not available.

Condition:

Router# configure terminal

Enter configuration commands, one per line. End with CNTL/Z.

Router(config)# int ucse 1/0/0.1

^

% Invalid input detected at '^' marker.

 

Router(config)# int ucse 1/0/1.1

^

% Invalid input detected at '^' marker.

 

Router(config)#

Router(config)# end

Router#

Workaround:

There is no workaround.

  • CSCum72670

Symptom:

IPsec ECN status is shown as disabled by hardware status.

Condition:

This problem occurs while checking show crypto ipsec sa output.

Workaround:

There is no workaround.

  • CSCun00629

Symptom:

Traceback generated while allocating a scheduling node before the resources are depleted. The failure adversely affects the current and subsequent configuration events.

Condition:

If the BQS resource manager returns synchronously after it has activated the scheduling node, it generates the following traceback after resuming processing of the same scheduling node to place the children in the tree and process the scheduling node rate:

IF:GigabitEthernet0/0/1.463: cpp_qm_event__proc_parent_activate:8332 alloc_schedule FairQueue_0x40000adc: OBJ_H: (0) 0/0x440000adc P_OBJ_H 0x40000ad7 flags: 0x4006 state: 0xc05 w/16 children adding 16 children failed

The failure gives a false alarm about resources outage. The traceback is caused by an erroneous logic when the scheduling node is already marked as ACTIVE before it is completely processed.

Workaround:

There is no workaround.

  • CSCun18607

Symptom:

When NAT44 or NAT64 stateful is used on the Cisco ISR 4451-X.

Condition:

When NAT44 or NAT64 stateful is used on the Cisco ISR 4451-X.

Workaround:

For NAT64, there is no workaround. For NAT44, PAT can be used.

  • CSCun40957

Symptom:

Ucode crashes.

Condition:

This problem occurs when a large packet is sent over a small MTU and that results in more than eight fragments.

Workaround:

Ensure that the size of the largest MTU is set to no more than 8 times the smallest MTU.

  • CSCun45789

Symptom:

Device crashes after CPUHOG messages are printed on the console.

Condition:

When you add a modem to the auxiliary port of a Cisco ISR 4451-X and then configuring it, the router crashes.

Workaround:

Do not use a modem on the auxiliary port. This configuration is not supported.

  • CSCun55337

Symptom:

Unable to set value on "cefIntLoadSharing" instance of CISCO-CEF-MIB.

Condition:

After setting value for "cefIntLoadSharing" instance on "CISCO-CEF-MIB".

Workaround:

There is no workaround.

Open Caveats - Cisco IOS XE Release 3.12.1S

There are no open caveats in this release.

Resolved Caveats - Cisco IOS XE Release 3.12.1S

  • CSCul22914

Symptom:

A Cisco device does not give the necessary failure information when the crypto NIST/KAT tests on boot fail. During test failures, users will not be notified. The logs do not contain information on the failures.

Condition:

This symptom occurs with a crypto NIST/KAT self-test and displays a generic message such as:

*Nov 5 17:48:19.128: %CMRP-3-CHASSIS_MONITOR_READY_TIME_EXCEEDED:cmand: Reloading F0 because it has failed to become ready for packet processing. This message doesn't give enough information for the user to take the proper course of action.

This message does not indicate that the crypto self-test has failed.

Workaround:

There is no workaround.

  • CSCum00034

Symptom:

When you use the show power inline command on Cisco ISR 4451 device, it does not display any output about the power consumed by the PD connected to SM module(s).

Condition:

You have to connect a PD to a front panel port of the SM module.

Workaround:

There is no workaround.

  • CSCun00629

Symptom:

The Cisco ISR 4451-X device generates a traceback while allocating a scheduling node before the resources are depleted. The failure adversely affects the current and subsequent configuration events.

Conditions:

If the BQS resource manager returns synchronously after it has activated the scheduling node, it generates the following traceback after resuming processing of the same scheduling node to place the children in the tree and process the scheduling node rate.

IF:GigabitEthernet0/0/1.463: cpp_qm_event__proc_parent_activate:8332 alloc_schedule FairQueue_0x40000adc: OBJ_H: (0) 0/0x440000adc P_OBJ_H 0x40000ad7 flags: 0x4006 state: 0xc05 w/16 children adding 16 ch ildren failed

The failure gives a false alarm about resources outage. The traceback is caused by an erroneous logic when the scheduling node is already marked as ACTIVE before it is completely processed.

Workaround:

There is no workaround.

  • CSCun03209

Symptom:

In some conditions, Cisco ISR 4400 platform displays Cisco-proprietary internal keywords as part of the error message.

Condition:

Displays Cisco-proprietary internal keywords as part of the error message.

Workaround:

There is no workaround.

  • CSCun39642

Symptom:

MLP bundle flow control is not functional.

Condition:

When you generate ICMP ECHREQ from the router to outside host over an MLP causes the bundle queuing process with a consequences of WRED malfunction. Also, the member links queue grows beyond the set queue-limits.

Workaround:

There is no workaround.

  • CSCun40957

Symptom:

The Cisco ISR4400-X Ucode crashes on Cisco IOS Release 15.3(3)S, 15.4(1)S, and 15.4(2)S.

Conditions:

This problem occurs when a large packet is sent over a small MTU and that results in more than 8 fragments.

Workaround:

Ensure that the size of the largest MTU is not set to more than 8 times the smallest MTU.

  • CSCun45789

Symptom:

Device crashes after CPUHOG messages are printed on the console.

Conditions:

When you add a modem to the auxiliary port of the Cisco ISR 4451-X device and then configuring it, the device crashes.

Workaround:

Do not use a modem on the auxiliary port. This configuration is currently unsupported.

  • CSCun89754

Symptom:

CPLD upgrade is not supported for rp/0 message when the upgrade hw-programmable file bootflash:hwprg.pkg slot r0 command is executed.

Conditions:

The defect affects the ISR products. However, the MCP CPLD upgrade works fine.

Workaround:

There is no workaround.

  • CSCuo05627

Symptom:

The serial interface and Service-Engine share the same interface name.

Conditions:

This problem occurs when you install any kind of serial card and Service-Engine card, then run the show interface description command.

Workaround:

There is no workaround.

  • CSCuo14802

Symptom:

The serial interface and Service-Engine share the same interface name.

Conditions:

This problem occurs when you install any serial card and Service-Engine card, then run the show interface description command.

Workaround:

There is no workaround.

  • CSCuo23251

Symptom:

The device Ucode crashes when you perform analog forward inspect.

Conditions:

This problem occurs with the analog traffic and forward configuration.

Workaround:

There is no workaround.

  • CSCuo24917

Symptom:

Cisco ISR4400-X series device Ucode crashes with the special internal packet.

Conditions:

This problem occurs when the Cisco ISR4400-X series device interprets an internal packet as an Ethernet packet and drops the packet. This is treated as a fatal event.

Workaround:

There is no workaround.

  • CSCuo37461

Symptom:

When the route distance changes, the tunnel interface QoS may not work.

Conditions:

This happens when there are multiple tunnel interfaces and all the traffic is tunneled to the same physical interfaces, with multiple routes for each tunnel traffic, where route distance determines the physical interface for the tunnel traffic.

With QoS applied to the tunnel interfaces, when the tunnel traffic route distance is changed to select a different physical interface, the QoS on that tunnel interface no longer works, after the change.

Workaround:

There is no workaround.

  • CSCuo41579

Symptom:

Cisco ISR4400-X series device Ucode crashes with the special internal packet.

Conditions:

This problem occurs when Cisco ISR4400-X series device interprets an internal packet as an Ethernet packet and drops the packet. This is treated as a fatal event.

Workaround:

There is no workaround.

  • CSCuo41590

Symptom:

There are compatibility issues between the certain IOS-XE versions and SM-ES3X. With some of the combinations of SM-ES3X firmware and releases of IOS-XE, the SM-ES3X will not boot. With the unsupported combinations, the SM-ES3X will not boot and an error message is such as

An error?*May 7 19:44:32.785: %SPA-3-MSG_PARSE_FAILURE:iomd: Failed to parse incoming message from SM-ES3X-24-P slot 2 subslot 0 board 0. The module software may require an update?

will be displayed on the IOS-XE console and the SM-ES3X will go into 'out of service' state as shown in the show platform command.

router#show platform

Chassis type: ISR4451-X/K9
 
Slot Type State Insert time (ago)
--------- ------------------- --------------------- -----------------
0 ISR4451-X/K9 ok 00:16:02
0/0 ISR4451-X-4x1GE ok 00:13:52
1 ISR4451-X/K9 ok 00:16:02
1/0 SM-X-1T3/E3 ok 00:12:29
2 ISR4451-X/K9 ok 00:16:02
2/0 SM-ES3X-24-P out of service 00:07:54
R0 ISR4451-X/K9 ok, active 00:16:02
F0 ISR4451-X/K9 ok, active 00:16:02
P0 Unknown ps, fail never
P1 XXX-XXXX-XX ok 00:15:32
P2 ACS-4450-FANASSY ok 00:15:32
 

Conditions:

This problem occurs when the versions of SM-ES3X modules is incompatible with some of the earlier IOS-XE releases. SM-ES3x version EJ1 is only compatible with the following releases:

IOS XE Release 3.10.4 or later

IOS XE Release 3.11.3 or later

IOS XE Release 3.12.1

Workaround:

There is no workaround.

Open Caveats - Cisco IOS XE Release 3.12.0S

  • CSCuh23721

Symptom:

After doing an “any-to-any” online insertion and removal (OIR) of a NIM-8CE1T1-PRI with a NIM-1CE1T1-PRI (both Cisco Fourth-Generation T1/E1 Voice and WAN Network Interface Modules) and then configuring the maximum number of channel-groups (31), %SNMP-3-DVR_DUP_REGN_ERR tracebacks occur.

Conditions:

This problem occurs whenever maximum number of channel-groups are configured after an “any-to-any” OIR.

Workaround:

There is no workaround.

  • CSCul98291

Symptom:

A crash on the router, due to low memory, fails to include IO related memory commands to assist in diagnosing the cause of the device running out of memory.

Conditions:

This problem occurs when the Router crashes due to low memory.

Workaround:

Configure exception crashinfo dump command and troubleshoot the memory issue.

  • CSCum21050

Symptom:

Device crashes when you run traffic greater than 90Mbps without installing the HSECK9 license.

Conditions:

This problem occurs when the traffic rate is greater than 90 Mbps and if you run the traffic without the HSECK9 license.

Workaround:

Install the HSECK9 license.

  • CSCum68577

Symptom:

UCSE sub-interface configuration not available.

Conditions:

Router# configure terminal

Enter configuration commands, one per line. End with CNTL/Z.

Router(config)# int ucse 1/0/0.1

^

% Invalid input detected at '^' marker.

 

Router(config)# int ucse 1/0/1.1

^

% Invalid input detected at '^' marker.

 

Router(config)#

Router(config)# end

Router#

Workaround:

There is no workaround.

  • CSCum72670

Symptom:

IPsec ECN status is shown as disabled by hardware status.

Conditions:

This problem occurs while checking show crypto ipsec sa output.

Workaround:

There is no workaround.

  • CSCun00629

Symptom:

Traceback generated while allocating a scheduling node before the resources are depleted. The failure adversely affects the current and subsequent configuration events.

Conditions:

If the BQS resource manager returns synchronously after it has activated the scheduling node, it generates the following traceback after resuming processing of the same scheduling node to place the children in the tree and process the scheduling node rate.

IF:GigabitEthernet0/0/1.463: cpp_qm_event__proc_parent_activate:8332 alloc_schedule FairQueue_0x40000adc: OBJ_H: (0) 0/0x440000adc P_OBJ_H 0x40000ad7 flags: 0x4006 state: 0xc05 w/16 children adding 16 ch ildren failed

The failure gives a false alarm about resources outage. The traceback is caused by an erroneous logic when the scheduling node is already marked as ACTIVE before it is completely processed.

Workaround:

There is no workaround.

  • CSCun18607

Symptom:

The number of translations on Cisco ISR 4451-X for NAT44 and NAT64 stateful is limited to 4K- to 6K.

Conditions:

When NAT44 or NAT64 stateful is used on the Cisco ISR 4451-X.

Workaround:

For NAT64, there is no workaround. For NAT44, PAT can be used.

  • CSCun40957

Symptom:

Ucode crashes.

Conditions:

This problem occurs when a large packet is sent over a small MTU and that results in more than 8 fragments.

Workaround:

Ensure that the size of the largest MTU is set to no more than 8 times the smallest MTU.

  • CSCun45789

Symptom:

Device crashes after CPUHOG messages are printed on the console.

Conditions:

When you add a modem to the auxiliary port of a Cisco ISR 4451-X and then configuring it, the router crashes.

Workaround:

Do not use a modem on the auxiliary port. This configuration is currently unsupported.

  • CSCun55337

Symptom:

Unable to set value on "cefIntLoadSharing" instance of CISCO-CEF-MIB.

Conditions:

After setting value for "cefIntLoadSharing" instance on "CISCO-CEF-MIB".

Workaround:

There is no workaround.

Resolved Caveats - Cisco IOS XE Release 3.12.0S

  • CSCuh68670

Symptom:

EVC works unexpectedly on port channel.

Conditions:

1) Create port-channel and enable EVC.

2) Bind interface to port-channel.

The interface is configured with EVC, MAC filtering is disabled.

3) Unbind interface from port-channel.

After step 3, MAC is configured to original MAC of interface, but the MAC filtering function is not enabled.

Workaround:

Remove the EVC configuration explicitly from the port-channel and then, remove the physical interface from the port-channel.

  • CSCui17592

Symptom:

The “Lost carrier” counter displays 0 (zero) in the show interface output for the Ethernet interface even though the Ethernet cable is disconnected or the peer connection is shutdown.

Conditions:

The cable is disconnected or the peer connection is shutdown.

Workaround:

There is no workaround.

  • CSCuj05954

Symptom:

On the router, certain special characters sent to the module console session can result in a locked session which will no longer accept input.

Conditions:

This problem occurs when special non-keyboard characters such as a raw linefeed “\r” character is sent to the module console from a tool or script. It is not seen when using a normal interactive session with manual input.

Workaround:

The console session can be recovered by reloading the module in question via the hw-module subslot x/y reload command.

  • CSCuj44542

Symptom:

The show version running command is not populating the software version for NIM/RP/FP slot with a Cisco IOS XE 3.11 image.

Conditions:

This problem occurs while testing the ENTITY-MIB, running ENTITY-MIB script.

Workaround:

There is no workaround.

  • CSCuj60321

Symptom:

After enabling an appxk9 license on the host Cisco ISR 4451-X router and reloading the router, a ping from the host router through a Cisco SM-X Layer 2/3 EtherSwitch Service Module (24-port) to a peer fails. A ping in reverse, from Cisco SM-X Layer 2/3 EtherSwitch Service Module (24-port) to ISR 4451-X, also fails.

Condition:

This problem occurs when an appxk9 license is enabled and the router is reloaded (to activate the license).

Workaround:

Reset the peer interface (shut / no shut).

  • CSCuj71234

Symptom:

Tracebacks with the following signature “%QFPOOR-4-LOWRSRC_PERCENT” are seen on the console with negative percentage complaining of resource depletion.

Conditions:

These tracebacks are usually seen on a clean-up operation performed on a router i.e manual removal of all configs. But it's not limited to only this operation and could be seen with router configuration as well.

Workaround:

There is no workaround.

Open Caveats - Cisco IOS XE Release 3.11.0S

  • CSCuh68670

Symptom:

EVC works unexpectedly on port channel.

Conditions:

1) Create port-channel, enable EVC.

2) Bind interface to port-channel.

The interface is configured with EVC, mac filtering is disabled.

3) Unbind interface from port-channel.

After step 3, MAC is configured to original mac of interface, but the MAC filtering function is not enabled.

Workaround:

Remove the EVC configuration explicitly from the port-channel and then, remove the physical interface from the port-channel.

  • CSCui17592

Symptom:

The “Lost carrier” counter displays 0 (zero) in the show interface output for the ethernet interface even though the ethernet cable is disconnected or the peer connection is shutdown.

Conditions:

This problem occurs when the cable is disconnected or the peer connection is shutdown

Workaround:

There is no workaround.

  • CSCui73718

Symptom:

A decrease in NDR (dropoff rate) occurs when using the FPGE interface.

Condition:

For IPv6 traffic flow, where the prefix length is greater than 64 bits, the NDR decreases in steps of 10–20 Kpps.

Workaround:

Reload the router.

  • CSCuj05954

Symptom:

On the router, certain special characters sent to the module console session can result in a locked session which will no longer accept input.

Conditions:

This problem occurs when special non-keyboard characters such as a raw linefeed “\r” character is sent to the module console from a tool or script. It is not seen when using a normal interactive session with manual input.

Workaround:

The console session can be recovered by reloading the module in question via the hw-module subslot x/y reload command.

  • CSCuj44542

Symptom:

The show version running command is not populating the software version for NIM/RP/FP slot with a Cisco IOS XE 3.11 image.

Conditions:

This problem occurs while testing the ENTITY-MIB, running ENTITY-MIB script.

Workaround:

There is no workaround.

  • CSCuj71234

Symptom:

Error messages with signatures “FP100: %QFPOOR-4-LOWRSRC_PERCENT” are repeatedly shown on the console whenever configurations are applied on the router or a clean-up operation is performed.

Conditions:

When configurations are made or clean-up operations are performed, incorrect error messages such as”“FP100: %QFPOOR-4-LOWRSRC_PERCENT” are shown on the console.

Workaround:

There is no workaround. These error messages are singular in nature and do not overfill the console.

  • CSCuj14454

Symptom:

Performing SNMP Get on entPhysicalFirmwareRev and entPhysicalSoftwareRev for NGWIC-8CE1T1-PRI returns a null value.

Conditions:

This problem occurs while querying ENTITY-MIB on NGWIC-8CE1T1-PRI module.

Workaround:

There is no workaround.

  • CSCuj60321

Symptom:

After enabling an appxk9 license on the host Cisco ISR 4451-X router and reloading the router, a ping from the host router through a Cisco SM-X Layer 2/3 EtherSwitch Service Module (24-port) to a peer fails. A ping in reverse, from Cisco SM-X Layer 2/3 EtherSwitch Service Module (24-port) to ISR 4451-X, also fails.

Condition:

This problem occurs when an appxk9 license is enabled and the router is reloaded (to activate the license).

Workaround:

Reset the peer interface (shut / no shut).

  • CSCuj90526

Symptom:

Module takes three attempts to come up online when router is reloaded and module is inserted (OIR) with no extended attribute file in the router NVRAM.

Conditions:

1. Delete the extended attributes file from router NVRAM and reload the router.

2. Insert module in router again.

Workaround:

There is no workaround.

  • CSCuj44552

Symptom:

The command show version running is not populating software version for NIM/RP/FP slot with the Cisco IOS XE 3.11 image.

Condition:

The problem occurs while testing the ENTITY-MIB, by running ENTITY-MIB script.

Workaround:

There is no workaround.

  • CSCul22914

Symptom:

Router crashes with a Cisco IOS error message such as:

*Nov 5 17:48:19.128: %CMRP-3-CHASSIS_MONITOR_READY_TIME_EXCEEDED:cmand: Reloading F0 because it has failed to become ready for packet processing

Condition:

During booting, the router does not run certain crypto NIST/KAT self-tests and displays a generic message which does not indicate the crypto self-test has failed.

Workaround:

There is no workaround.

Resolved Caveats - Cisco IOS XE Release 3.11.0S

  • CSCue93599

Symptom:

Automated scripts fail after you copy and paste characters to the Cisco SM-X-1 T3/E3 module console; the characters are dropped or not displayed properly.

Conditions:

When use copy and paste option to enter characters to the module console, some of the characters can be dropped or are not displayed properly.

Workaround:

You should manually enter any input that are needed on the module console rather than using the copy and paste option to enter large amounts of text to the module console.

  • CSCue36278

Symptom:

The following error message is displayed while issuing module commands such as show platform hardware subslot module or show platform software subslot module :

%IOMD-3-TIMER_FAIL:iomd: Failed to clear timer

Conditions:

If the Cisco ISR 4451-X and the Cisco SM-X-1 T3/E3 module and interfaces are running near line rate traffic and the command show platform hardware subslot module host-if statistics is used to obtain the statistics from the module.

Workaround:

There is no workaround.

  • CSCuf82827

Symptom:

When IPsec is configured, OneFW drops packets (about 5%) when inspecting traffic coming out of an IPSEC tunnel. The reason for the drop is “Asacx CRC checksum error”.

Conditions:

When the packet size is greater than 1450 bytes.

Workaround:

There is no workaround.

  • CSCug85880

Symptom:

The router may unexpectedly reload at the Watchdog process “Timer Library”, after a physical WAN-GigE admin-shutdown, with all the GM's registered and waiting for the rekey.

Conditions:

When the Cisco ISR 4451-X is acting as a VRF-Lite GM.

Workaround:

There is no workaround.

  • CSCug55787

Symptom:

When an 8-port Cisco Fourth-Generation T1/E1 Voice and WAN Network Interface Module of E1 card type and 248 channel groups is configured, followed by OIR with a 1-port module configured with full 31 channel groups (E1), then OIR back to an 8-port T1/E1 module, the first controller's channel groups fail to come up.

Conditions:

When the 8-port T1/E1 module is configured, followed by OIR with a 1-port module configured with full 31 channel groups, then OIR back to an 8-port T1/E1 module, the first controller's channel groups fail to come up.

Workaround:

Remove the failed channel groups, and re-configure them.

  • CSCuh97122

Symptom:

Potential starving of features that are able to use recycle queue resources because Cisco AppNav queue is made high priority.

Conditions:

A large amount of traffic exhausts the Cisco AppNav recycle queues, which are used by mpass infrastructure.

Workaround:

There is no workaround.

  • CSCuh97122

Symptom:

Potential starving of features that are able to use recycle queue resources because Cisco AppNav queue is made high priority.

Conditions:

A large amount of traffic exhausts the Cisco AppNav recycle queues, which are used by mpass infrastructure.

Workaround:

There is no workaround.

  • CSCui10537

Symptom:

When a Cisco T1/E1 NIM’s E1 interface has channel-groups and ds0-group, some ds0-groups may not come up on the remote side (suppose it's argot), and voice call cannot be made.

Conditions:

This happens when both channel groups and ds0-groups are configured on the same Cisco T1/E1 NIM.

Workaround:

Always configure ds0-group first, then configure channel-group or tdm-group.

  • CSCui97599

Symptom:

The front panel gigabit ethernet interface is a dual media interface. When the RJ45 port is operational and an SFP transceiver is inserted, the RJ45 link bounces (up -> down -> up).

Conditions:

Using a GLC-T or GLC-GE-100FX SFP transceiver.

Workaround:

There is no workaround.

  • CSCui99978

Very large numbers are seen sometimes in the output of “backplane switch” counters - show platform hardware backplane R0 ... statistics after clearing the counters via clear platform hardware backplane R0 statistics .

Conditions:

After clearing the backplane switch counters. This does not impact the interface counters and other statistics.

Workaround:

Issue the clear command again to clear the counters properly.

  • CSCuj02503

Symptom:

The “Internal_service” license state shows as “Active, Not In Use” even after it has expired. The system Linux Shell cannot be accessed after the “Internal_service” 1 Day license has expired, which is expected. However, if a new 1 Day license is installed again, even though the license state comes up as “Active, In Use”, the Linux Shell still cannot be accessed.

Conditions:

Install a 1-day Internal_service license. Let the license expire and then install another 1-day Internal_service license.

Workaround:

Configure and unconfigure the platform shell command to recover the license so that it is in a proper working state.

Router# config terminal

Router(config)# platform shell

Router(config)# no platform shell

Router(config)# platform shell

The System Linux Shell is now accessible.

  • CSCuj68718

Symptom:

The following examples of tracebacks are seen on the router console:

*Oct 22 17:21:02.089 IST: %IDBINDEX_SYNC-3-IDBINDEX_LINK: Driver for IDB type '27' changed the Identity of interface "Ethernet-Internal1/0/0" without deleting the old Identity first (rc=8) -Process= "CWAN OIR Handler", ipl= 0, pid= 151

-Traceback= 1#a09998a000c6775399bb03536911aed5 :400000+B54D71 :400000+391F380 :400000+391EA76 :400000+3D33CE7 :400000+3D33953 :400000+3D72B1E :400000+437F8EC :400000+363274A :400000+3631F28 :400000+3613515 :400000+3613BF5 :400000+4358A3F :400000+4358F7E :400000+267EEBE :400000+435A381 :400000+435A243

 

*Oct 31 14:36:45.526: %IDBINDEX_SYNC_KEY-3-UNKNOWN_TYPE: Interface type is unknown and cannot be synced: "", 0 -Process= "CWAN OIR Handler", ipl= 0, pid= 158

-Traceback= 1#42d0348895d7f998d3747a45d48d89b8 :400000+B54E31 :400000+393430A :400000+393C0DA :400000+393C7D8 :400000+3938CF4 :400000+362F0D0 :400000+362EF0A :400000+4377CCA :400000+26993EC :400000+4375801 :400000+43756C3 :400000+4397DBF :400000+3806CDB :400000+3806B6C

*Oct 31 14:36:45.529: -Traceback= 1#42d0348895d7f998d3747a45d48d89b8 :400000+B54177 :400000+393430F :400000+393C0DA :400000+393C7D8 :400000+3938CF4 :400000+362F0D0 :400000+362EF0A :400000+4377CCA :400000+26993EC :400000+4375801 :400000+43756C3 :400000+4397DBF :400000+3806CDB :400000+3806B6C

Conditions:

Several possible conditions cause these symptoms:

1) When one etherswitch module is inserted and remove in about 35 seconds and replaced with another etherswitch module, some tracebacks or error messages will be observed on the router console.

2) When the NIM-2CE1T1-PRI module is stopped via the hw-module command.

3) Booting the router with NIM-2CE1T1-PRI module.

Workaround:

Do not perform rapid online insertion/removal; let the module come up properly before removing it.

Do not perform a hw-module stop of the NIM-2CE1T1-PRI module.

Some tracebacks may not have a workaround.

  • CSCul17967

Symptom:

Traffic is dropped for Trustsec over DMVPN on the Cisco ISR 4451-X.

Conditions:

Transport mode is used.

Workaround:

Use Tunnel mode.

Open Caveats - Cisco IOS XE Release 3.10.3S

  • CSCuo41579

Symptom:

Cisco ISR4400-X series device Ucode crashes with the special internal packet.

Conditions:

This problem occurs when Cisco ISR4400-X series device interprets an internal packet as an Ethernet packet and drops the packet. This is treated as a fatal event.

Workaround:

There is no workaround.

  • CSCun92245

Symptom:

A Cisco device can experience a memory leak due to "Crypto IKMP" process. This can occur if the multiple DHCP servers are configured under crypto configuration as shown in this example.

crypto isakmp client configuration group NAME
dHCP X.X.X.X X.X.X.X
dhcp X.X.X.X X.X.X.X.
 

Conditions:

This problem occurs when multiple DHCP servers are configured under crypto.

Workaround:

Use only a single DHCP server. Due to an error in the code, only the memory structures associated with data from the last DHCP server are properly released after a lookup. Data from other servers in the list is retained indefinitely with each lookup.

Resolved Caveats - Cisco IOS XE Release 3.10.3S

  • CSCuj45655

Symptom:

When a device has an empty ACL, it fails to deny all traffic.

Conditions:

This problem occurs when an empty ACL is present in the policy.

Workaround:

Ensure that the ACL is not empty in the class-map.

  • CSCul78685

Symptom:

When you oversubscribe the MLPP traffic with member link, the Out-of-Resource error can occur.

Conditions:

This problem occurs when the MLPPP traffic with the member link over-subscription.

Workaround:

Avoid oversubscribing the member link. This can be done by keeping the MLP bundle throughput rate at less than 95% of the line rate.

  • CSCul22914

Symptom:

When you boot the device, the device does not provide the necessary failure information when the crypto NIST/KAT test fails. Also, the user is not notified and the logs do not contain information on the failure(s). Because of this, the TAC will not be able to help the user.

Conditions:

Router crashes on boot with the following Cisco IOS error message in the event of a Crypto NIST/KAT self-test. The message below is a generic message and not specific to a crypto self-test failure.

*Nov 5 17:48:19.128: %CMRP-3-CHASSIS_MONITOR_READY_TIME_EXCEEDED:cmand: Reloading F0 because it has failed to become ready for packet processing. This message doesn't give enough information for the user to take the proper course of action.
 

Workaround:

There is no workaround.

Open Caveats - Cisco IOS XE Release 3.10.2S

  • CSCuj45655

Symptom:

When a router has an empty ACL, it fails to deny all traffic.

Conditions:

An empty ACL in the policy.

Workaround:

Ensure the ACL is not empty in the class-map.

  • CSCul78685

Symptom:

Out-of-Resource error may happen with MLPPP traffic when oversubscribed.

Conditions:

MLPPP traffic with member link oversubscription.

Workaround:

Avoid oversubscribing the member link. This can be done by keeping the MLP bundle throughput rate at less than 95% of the line rate.

  • CSCul22914

Symptom:

Router does not give the necessary failure information if the crypto NIST/KAT tests on boot fails. In the event of some test failures, the user will not be notified. The logs will also contain no information on the failure(s) so TAC will not be able to help the user.

Conditions:

Router crashes on boot with the following Cisco IOS error message in the event of a Crypto NIST/KAT self test. The message below is a generic message and not specific to a crypto self test failure.

*Nov 5 17:48:19.128: %CMRP-3-CHASSIS_MONITOR_READY_TIME_EXCEEDED:cmand: Reloading F0 because it has failed to become ready for packet processing. This message does not give enough information for the user to take the proper course of action.

Workaround:

There is no workaround.

Resolved Caveats - Cisco IOS XE Release 3.10.2S

  • CSCul61537

Symptom:

Loss of keepalive packets caused by a low priority flow being raised to high priority.

Conditions:

When FRF.12 is enabled, the priority is raised to high priority and keepalive packets may be lost due to congestion.

Workaround:

There is no workaround.

  • CSCui02348

Symptom:

HP2 traffic is throttled even when under-subscribed. Modules need to absorb bursts without impact to priority handling, latency and throughput.

Conditions:

LLQ burst borrowing is enabled.

Workaround:

There is no workaround.

  • CSCuj71234

Symptom:

Tracebacks with the following signature “%QFPOOR-4-LOWRSRC_PERCENT” are seen on the console with negative percentage complaining of resource depletion.

Conditions:

These tracebacks are usually seen on a clean-up operation performed on a router i.e manual removal of all configs. But it's not limited to only this operation and could be seen with router configuration as well.

Workaround:

There is no workaround.

  • CSCuj02503

Symptom:

Internal_service license state shows as “Active, Not In Use” even after its expiry. The system Linux Shell cannot be accessed upon expiry of the “Internal_service' 1 Day license which is expected. However if an new 1 Day license is installed again, the license state comes up as “Active, In Use”, but Linux Shell cannot be accessed.

Conditions:

Install 1 Day “Internal_service” license. Let the license expire then install another 1 Day “Internal_service” license.

Workaround:

Configure and unconfigure the platform shell configuration command to recover the license to proper working state.

  • CSCul20010

Symptom:

The user will see the system shaping to too low a rate when a tunnel moves to a faster interface, and shaping to too high a rate when a tunnel moves to a slower interface.

Conditions:

Upon a dynamic move of a tunnel to a link with a different speed and the QoS configuration option “shape average percent” has been applied, then rates are not automatically re-calculated.

Workaround:

The workaround to this issue is to avoid “shape average percent” whenever possible. If it is not possible, then after a tunnel moves occurs, modify the shaping percent by plus or minus 1 percent, and then restore to original value, because this forces a recalculation of the shaping rate.

  • CSCug55787

Symptom:

Serial interface protocol status shows down.

Conditions:

Perform OIR and configure few channel-groups. Then swap original board back.

Workaround:

Reload the router.

  • CSCul30189

Symptom:

Router is not able to detect a PoE device that is attached to the FPGE PoE port.

Conditions:

PoE device is attached to FPGE PoE port and the PoE port is configured with power inline auto and no shutdown .

Workaround:

Perform shutdown , no shutdown , or power inline never , power inline auto in the GigE port where the PoE device is plugged in.

  • CSCuj19201

Symptom:

Re-registration time is recalculated on GM nodes upon receiving a TBAR rekey, based on the remaining TEK lifetime at the time of the TBAR rekey. This effectively causes a much-shorter re-registration window compared to the one obtained at the GM registration, even if the original TEK lifetime was configured with a long value.

Conditions:

This symptom is observed when TBAR is configured and long TEK lifetime used (more than 7200 seconds).

Workaround:

There is no workaround.

  • CSCul15647

Symptom:

Classification by ACL in QoS is broken when using it with IPsec tunnel.

Conditions:

Use ACL for classification in policy-map and apply a QoS to physical interface. QoS pre-classify is configured under IPsec tunnel

Workaround:

Apply a QoS to IPsec tunnel.

Open Caveats - Cisco IOS XE Release 3.10.1S

  • CSCug55787

Symptom:

8-port CT1E1 controller’s channel groups fail to come up after doing OIR with a 1-port controller.

Conditions:

1. Using an 8-port CT1E1 controller, with the E1 card type and 248 channel groups configured, followed by 2. OIR with a 1-port model (configured with 31 channel groups), then 3. OIR back to the original 8-port CT1E1, which results in the first controller's channel groups failing to come up.

Workaround:

Remove the failed channel groups, and re-configure them for the controller.

  • CSCuj02503

Symptom:

The “Internal_service” license state shows as “Active, Not In Use” even after it has expired. The system Linux Shell cannot be accessed after the “Internal_service” 1 Day license has expired, which is expected. However, if a new 1 Day license is installed again, even though the license state comes up as “Active, In Use” the Linux Shell still cannot be accessed.

Conditions:

Install a 1 Day “Internal_service” license. Let the license expire and then install another 1 Day “Internal_service” license.

Workaround:

Configure and unconfigure the “platform shell” command to recover the license so that it is in a proper working state.

Router# config terminal

Router(config)# platform shell

Router(config)# no platform shell

Router(config)# platform shell

The System Linux Shell is now accessible.

  • CSCuf47227

Symptom:

Failure message Embedded hash verification failed is returned during copy operations on non-image files.

Conditions:

When “file verify auto” is enabled in the running configuration and a local copy operation is done for a file that does not contain a signature; for example, a log file or configuration backup, the copy fails.

Workaround:

Use copy/no verify or disable “file verify auto”.

  • CSCui10537

Symptom:

When a Cisco T1/E1 NIM’s E1 interface has channel-groups and ds0-group, some ds0-groups may not come up on the remote side (suppose it's argot), and voice call cannot be made.

Conditions:

This happens when both channel groups and ds0-groups are configured on the same Cisco T1/E1 NIM.

Workaround:

Current work around is to always configure ds0-group first, then configure channel-group or tdm-group.

Resolved Caveats - Cisco IOS XE Release 3.10.1S

  • CSCui07756

Symptom:

Any traffic going through the Cisco ISR4451's data plane is dropped.

Conditions:

Issue is seen only after power cycling the box multiple times.

Workaround:

Power cycle the box again to recover from the issue.

  • CSCuf20387

Symptom:

IPsec drops packets with an HMAC error: “%IPSEC-3-HMAC_ERROR: IPSec SA receives HMAC error”

Conditions:

When packets are large-sized (over 9150 bytes) and the Cisco ISR 4451-X is terminating an IPSEC session.

Workaround:

Use a packet size of less than 9150 bytes.

  • CSCuh04178

Symptom:

A Cisco SM-X-1 T3/E3 module is not reloaded for recovery on the Cisco ISR 4451-X if there is any loss of control packet or configuration messages from the host.

Conditions:

When the module is unresponsive to host control packets.

Workaround:

Use the hw-module subslot slot / subslot reload command to bring the module up.

  • CSCuf82827

Symptom:

When IPsec is configured, OneFW drops packets (about 5%) when inspecting traffic coming out of an IPSEC tunnel. The reason for the drop is “Asacx CRC checksum error”.

Conditions:

When the packet size is greater than 1450 bytes.

Workaround:

There is no workaround.

  • CSCue59998

Symptom:

Some kernel failure messages (for example, “COMRESET failed”) appear in the console logs.

Conditions:

During online insertion and removal (OIR) of a NIM-SSD module or after the chassis comes up after a power cycle.

Workaround:

There is no workaround.

  • CSCue36278

Symptom:

The error message “%IOMD-3-TIMER_FAIL:iomd: Failed to clear timer.” appears while issuing module commands such as show platform hardware subslot module or
show platform software subslot module .

Conditions:

If the Cisco ISR 4451-X and the Cisco SM-X-1 T3/E3 module and interfaces are running near line rate traffic and the command show platform hardware subslot module host-if statistics is used to obtain the statistics from the module.

Workaround:

There is no workaround.

  • CSCue93599

Symptom:

Automated scripts fail after you copy/paste characters to the Cisco SM-X-1 T3/E3 module console; the characters are dropped or not displayed properly.

Conditions:

When copy/paste is used to enter characters to the module console, some characters may be dropped or are not displayed properly.

Workaround:

Manually enter any input needed on the module console rather than using cut/paste to enter large amounts of text to the module console.

  • CSCuh91072

Symptom:

The following Kernel message appears:

*Jul 2 06:11:28.823: %IOSXE-3-PLATFORM:kernel: dash_c2w_reset_sequence: c2w reset sequence FAILED.
*Jul 2 06:11:28.823: %IOSXE-3-PLATFORM:kernel: dash_reset_i2c_bus: Unable to reset adapter: 11
 

Conditions:

On every reboot of the Cisco ISR 4451-X with a UCSE double-wide module.

Workaround:

There is no workaround.

  • CSCuh47668

Symptom:

The show memory debug leak chunk command displays a chunk memory leak in function mcp_spa_tdl_alloc.

Conditions:

During bootup of the router’s DMVPN hub loaded with a Cisco IOS XE 3.10.0S image.

Workaround:

There is no workaround.

Open Caveats - Cisco IOS XE Release 3.10.0S

This section documents the unexpected behavior that might be seen in the Cisco ISR 4451-X in
Cisco IOS XE Release 3.10.0S.

  • CSCuc04431

Symptom:

A few fragmented IPsec packets are dropped and appear as IpFormatErr in the error counts.

Conditions:

If a configuration results in fragmented packets being received, decrypted and then re-encrypted for transmission on an interface different than the receiving interface, a packet may *rarely* be dropped. The packet drops will be shown as IpFormatEr in the error counts.

Workaround:

There is no workaround.

  • CSCue36278

Symptom:

The error message “%IOMD-3-TIMER_FAIL:iomd: Failed to clear timer.” appears while issuing module commands such as show platform hardware subslot module or
show platform software subslot module .

Conditions:

If the Cisco ISR 4451-X and the Cisco SM-X-1 T3/E3 module and interfaces are running near line rate traffic and the command show platform hardware subslot module host-if statistics is used to obtain the statistics from the module.

Workaround:

There is no workaround.

  • CSCue59998

Symptom:

Some kernel failure messages (for example, “COMRESET failed”) appear in the console logs.

Conditions:

During online insertion and removal (OIR) of a NIM-SSD module or after the chassis comes up after a power cycle.

Workaround:

There is no workaround.

  • CSCue93599

Symptom:

Automated scripts fail after you copy/paste characters to the Cisco SM-X-1 T3/E3 module console; the characters are dropped or not displayed properly.

Conditions:

When copy/paste is used to enter characters to the module console, some characters may be dropped or are not displayed properly.

Workaround:

Manually enter any input needed on the module console rather than using cut/paste to enter large amounts of text to the module console.

  • CSCuf20387

Symptom:

IPsec drops packets with an HMAC error: “%IPSEC-3-HMAC_ERROR: IPSec SA receives HMAC error”

Conditions:

When packets are large-sized (over 9150 bytes) and the Cisco ISR 4451-X is terminating an IPSEC session.

Workaround:

Use a packet size of less than 9150 bytes.

  • CSCuf47227

Symptom:

Failure message Embedded hash verification failed is returned during copy operations on non-image files.

Conditions:

When “file verify auto” is enabled in the running configuration and a local copy operation is done for a file that does not contain a signature; for example, a log file or configuration backup, the copy fails.

Workaround:

Use copy/noverify or disable “file verify auto”.

  • CSCuf82827

Symptom:

When IPsec is configured, OneFW drops packets (about 5%) when inspecting traffic coming out of an IPSEC tunnel. The reason for the drop is “Asacx CRC checksum error”.

Conditions:

When the packet size is greater than 1450 bytes.

Workaround:

There is no workaround.

  • CSCug55787

Symptom:

When an 8-port Cisco Fourth-Generation T1/E1 Voice and WAN Network Interface Module of E1 card type and 248 channel groups is configured, followed by OIR with a 1-port module configured with full 31 channel groups (E1), then OIR back to an 8-port T1/E1 module, the first controller's channel groups fail to come up.

Conditions:

When the 8-port T1/E1 module is configured, followed by OIR with a 1-port module configured with full 31 channel groups, then OIR back to an 8-port T1/E1 module, the first controller's channel groups fail to come up.

Workaround:

Remove the failed channel groups, and re-configure them.

  • CSCug62105

Symptom:

CISCO-ENTITY-PERFORMANCE-MIB is unsupported. The MIB tables do not populate.

Conditions:

When querying CISCO-ENTITY-PERFORMANCE-MIB(ciscoEntityPerformanceMIB) using SNMP.

Workaround:

There is no workaround.

  • CSCug70901

Symptom:

The show platform software ipsec FP active inventory command does not display correct entries for “ipsec flow count” and “sa cont count”.

Conditions:

While verifying EzVPN into MPLS/VPN across an MPLS backbone, and IVRF=FVRF in client mode.

Workaround:

There is no workaround.

  • CSCug85880

Symptom:

The router may unexpectedly reload at the Watchdog process “Timer Library”, after a physical WAN-GigE admin-shutdown, with all the GM's registered and waiting for the rekey.

Conditions:

When the Cisco ISR 4451-X is acting as a VRF-Lite GM.

Workaround:

There is no workaround.

  • CSCuh04178

Symptom:

A Cisco SM-X-1 T3/E3 module is not reloaded for recovery on the Cisco ISR 4451-X if there is any loss of control packet or configuration messages from the host.

Conditions:

When the module is unresponsive to host control packets.

Workaround:

Use the hw-module subslot slot / subslot reload command to bring the module up.

  • CSCuh23721

Symptom:

SNMP tracebacks are seen since MIBS are not removed on unplugging the module during any-to-any OIR.

Conditions:

During any-to-any OIR, when configurations are made under a channel-group, MIBS are not removed after unplugging the module.

Workaround:

There is no workaround.

  • CSCuh47668

Symptom:

The show memory debug leak chunk command displays a chunk memory leak in function mcp_spa_tdl_alloc.

Conditions:

During bootup of the router’s DMVPN hub loaded with a Cisco IOS XE 3.10.0S image.

Workaround:

There is no workaround.

  • CSCuh76565

Symptom:

Control plane ping with packet size > 600 bytes fails on a Cisco Fourth-Generation T1/E1 Voice and WAN Network Interface Module.

Conditions:

Execute command:

test platform software tdl ping subslot module endpoint 0 repeat 100 size 1800

Workaround:

There is no workaround.

  • CSCuh79375

Symptom:

The control plane communication to the service module fails silently. Any command (CLI) that requires a response from the module may fail.

Examples of commands that may fail include:

show platform hardware subslot x/y module firmware

show platform software

show platform hardware

The error “module unresponsive” is displayed on the console.

Other symptoms include:

Output of show platform software iomd x/y rel statistics shows a “packets lost” counter not equal to 0.

Configurations from the host may fail to take effect.

Conditions:

One example condition is found while using the Cisco Fourth-generation T1/E1 Voice and WAN Network Interface Module, after execution of the command:

test plat soft tdl ping subslot x/y module endp 0 size (where size > 600)

The error may also occur when using other service modules under different conditions.

Workaround:

Reload the service module using the command hw-module subs <x/y> reload .

  • CSCuh91072

Symptom:

The following Kernel message appears:

*Jul 2 06:11:28.823: %IOSXE-3-PLATFORM:kernel: dash_c2w_reset_sequence: c2w reset sequence FAILED.
*Jul 2 06:11:28.823: %IOSXE-3-PLATFORM:kernel: dash_reset_i2c_bus: Unable to reset adapter: 11
 

Conditions:

On every reboot of the Cisco ISR 4451-X with a UCSE double-wide module.

Workaround:

There is no workaround.

  • CSCuh97122

Symptom:

Potential starving of features that are able to use recycle queue resources because Cisco AppNav queue is made high priority.

Conditions:

A large amount of traffic exhausts the Cisco AppNav recycle queues, which are used by mpass infrastructure.

Workaround:

There is no workaround.

  • CSCuh97786

Symptom:

A serial interface of the Cisco Fourth-generation T1/E1 Voice and WAN Network Interface Module (Cisco T1/E1 NIM) with High-Level Data Link Control (HDLC) encapsulation, stays down.

Conditions:

Using a Cisco T1/E1 NIM, and with FR encapsulation configured on the default serial interface, the serial interfaces stay down.

One back-to-back setup:

1. Configure FR encapsulation.

2. Ping test success.

3. Default serial interface on both uut and peer.

4. Serial interfaces are down.

5. Shut and no shut of interface, causes that particular serial interface to toggle, but all interfaces don't come up.

Workaround:

shutdown and no shutdown of the controller brings up the interfaces.

  • CSCui10537

Symptom:

When a Cisco T1/E1 NIM’s E1 interface has channel-groups and ds0-group, some ds0-groups may not come up on the remote side (suppose it's argot), and voice call cannot be made.

Conditions:

This happens when both channel groups and ds0-groups are configured on the same Cisco T1/E1 NIM.

Workaround:

Current work around is to always configure ds0-group first, then configure channel-group or tdm-group.

  • CSCui12913

Symptom:

On Cisco T1/E1 NIM after an FPGA upgrade, the winmon upgrade fails from a bundled image if both have upgraded versions.

Conditions:

If there is a new winmon coupled with new FPGA, only FPGA upgrade happens and no winmon upgrade kicks in.

Workaround:

There is no workaround.

  • CSCui17326

Symptom:

Memory leaks occur after running “SM-X-ES3-24-P” regression scripts.

Conditions:

The Cisco ISR 4451-X with one or two “SM-X-ES3-24-P” modules inserted where the modules have at least one IP phone (9971 or 9951) connected to its front-panel ports.

Workaround:

There is no workaround.

  • CSCui07756

Symptom:

Any traffic going through the Cisco ISR4451's data plane is dropped.

Conditions:

Issue is seen only after power cycling the box multiple times.

Workaround:

Power cycle the box again to recover from the issue.

Resolved Caveats - Cisco IOS XE Release 3.10.0S

  • CSCtx17869

Symptom:

The show ipv6 cef exact-route command does not show the correct egress interface for traffic.

Conditions:

In a network with multiple parallel paths, the show ipv6 cef exact-route command does not show the correct egress interface for traffic streams. This happens when using any of the following cef load sharing algorithms:

ipv6 cef load-sharing algorithm include-ports source
ipv6 cef load-sharing algorithm include-ports destination
ipv6 cef load-sharing algorithm include-ports source destination
 

Workaround:

There is no workaround.

  • CSCub77606

Symptom:

The system is reset after the port-channel load-balancing vlan-manual command is entered, while traffic is running.

Conditions:

When the port-channel load-balancing vlan-manual command is entered to create a port-channel, while traffic is running, the CPP crashes and the system is reset.

Workaround:

Ensure there is no traffic running when you configure a port channel using the
port-channel load-balancing vlan-manual command.

  • CSCub86310

Symptom:

The number of octets shown in the drop statistics, is 0 (zero), as shown in the following example:

Router# show platform hardware qfp active statistics drop clear
 

Global Drop Stats Packets Octets

Firewall Nonsession 24384124 0

Conditions:

Although the number of dropped packets is shown correctly, the number of octets is shown as 0 (zero).

Workaround:

There is no workaround.

Open Caveats - Cisco IOS XE Release 3.9.1S

This section documents the unexpected behavior that might be seen in the Cisco ISR 4451-X in
Cisco IOS XE Release 3.9.1S.

  • CSCtx17869

Symptom:

The show ipv6 cef exact-route command does not show the correct egress interface for traffic.

Conditions:

In a network with multiple parallel paths, the show ipv6 cef exact-route command does not show the correct egress interface for traffic streams. This happens when using any of the following cef load sharing algorithms:

ipv6 cef load-sharing algorithm include-ports source
ipv6 cef load-sharing algorithm include-ports destination
ipv6 cef load-sharing algorithm include-ports source destination
 

Workaround:

There is no workaround.

  • CSCua34142

Symptom:

Cisco IOS software command output shows a negative file size for core files which are larger than 2GB (kernel core dump).

OVLD_2#dir bootflash:/core
Directory of bootflash:/core/
277443 -rw- -1932872006 Jun 6 2012 15:31:26 +00:00 kernel.rp_20120606153126.core.gz 277448 -rw- 602923008 Jun 7 2012 07:28:55 +00:00 kernel.rp_20120607072855.core.gz
 

Conditions:

Whenever a core file with a size greater than 2GB is generated, Cisco IOS will show it as negative file size.

Workaround:

The output which appears showing the file size as negative is not the main issue. The main issue is that a file greater than 2GB in size, cannot be copied via the management port or using tftp. If you need to copy a large file such as this, please contact Cisco TAC to help you copy the file using the platform shell.

  • CSCub77606

Symptom:

The system is reset after the port-channel load-balancing vlan-manual command is entered, while traffic is running.

Conditions:

When the port-channel load-balancing vlan-manual command is entered to create a port-channel, while traffic is running, the CPP crashes and the system is reset.

Workaround:

Ensure there is no traffic running when you configure a port channel using the
port-channel load-balancing vlan-manual command.

  • CSCub86310

Symptom:

The number of octets shown in the drop statistics, is 0 (zero), as shown in the following example:

Router# show platform hardware qfp active statistics drop clear
 

Global Drop Stats Packets Octets

Firewall Nonsession 24384124 0

Conditions:

Although the number of dropped packets is shown correctly, the number of octets is shown as 0 (zero).

Workaround:

There is no workaround.

Related Documentation

Platform-Specific Documentation

For information about the Cisco ISR 4400 Series and associated services and modules, see:

Documentation Roadmap for the Cisco ISR 4400 Series .

Cisco IOS Software Documentation

The Cisco IOS XE 3S software documentation set consists of Cisco IOS XE 3S configuration guides and Cisco IOS command references. The configuration guides are consolidated platform-independent configuration guides organized and presented by technology. There is one set of configuration guides for the Cisco IOS release train and another for the Cisco IOS XE 3S release train. However, there is only one set of command references because they are platform independent. These Cisco IOS command references support all Cisco platforms that are running any Cisco IOS or Cisco IOS XE software image.

See http://www.cisco.com/en/US/products/ps11174/tsd_products_support_series_home.html


NoteAll content included in Cisco IOS configuration guides is shared with and included in the Cisco IOS XE 3S configuration guides. As a result, some information for features introduced as part of Cisco IOS XE 3S may also be displayed in Cisco IOS configuration guides.


Information in the configuration guides often includes related content that is shared across software releases and platforms. Some features referenced in these configuration guides may not be supported by Cisco IOS XE 3S or by the Cisco ISR 4451-X.

Additionally, 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.

Obtaining Documentation and Submitting a Service Request

For information on obtaining documentation, submitting a service request, and gathering additional information, see What’s New in Cisco Product Documentation at: http://www.cisco.com/en/US/docs/general/whatsnew/whatsnew.html .

Subscribe to What’s New in Cisco Product Documentation , which lists all new and revised Cisco technical documentation, as an RSS feed and deliver content directly to your desktop using a reader application. The RSS feeds are a free service.

This document is to be used in conjunction with the documents listed in the “Related Documentation” section.