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About Cisco ASR 1000 Series Aggregation Services Routers

The Cisco ASR 1000 Series Routers carry a modular yet integrated design, so network operators can increase their network capacity and services without a hardware upgrade. The routers are engineered for reliability and performance, with industry-leading advancements in silicon and security to help your business succeed in a digital world that's always on. The Cisco ASR 1000 Series is supported by the Cisco IOS XE Software, a modular operating system with modular packaging, feature velocity, and powerful resiliency. The series is well suited for enterprises experiencing explosive network traffic and network service providers needing to deliver high-performance services.

Cisco ASR 1000 Series Routers are available in this options:

  • Cisco ASR 1001-X Router

  • Cisco ASR 1002-X Router

  • Cisco ASR 1001-HX Router

  • Cisco ASR 1002-HX Router

  • Cisco ASR 1004 Router

  • Cisco ASR 1006 Router

  • Cisco ASR 1006-X Router

  • Cisco ASR 1009-X Router

  • Cisco ASR 1013 Router

For more information on the features and specifications of Cisco ASR 1000 Series Routers, refer to the Cisco ASR 1000 Series Routers datasheet.


Note

Cisco IOS XE Cupertino 17.7.1a is the first release for Cisco ASR 1000 Series Aggregation Services Routers in the Cisco IOS XE Cupertino 17.7.x release series.



Note

Starting from IOS XE 17.5, the following consolidated platforms (or with dual IOSd) will move to monolith packaging and will not enable upgrade/downgrade using separate packages:

  • ASR 1001-X

  • ASR 1001-HX

  • ASR1002-X

  • ASR 1002-HX


Instead, use the install add file bootflash:<file name> activate commit command to upgrade using a single image that combines all the separate packages improves the boot time.

Starting from IOS XE 17.6, the ISSU on Cisco ASR 1000 Series Aggregation Services Routers will migrate to an install workflow that provides step-by-step upgrade/downgrade commands.

The ISSU load version commands will be deprecated and these commands include:

  • abortversion

  • acceptversion

  • checkversion

  • commitversion

  • config-sync

  • image-version

  • loadversion

  • runversion.

Additionally, dual IOSd ISSU commands and Bundle mode ISSU workflows will also be disabled.


Note

The In-Service Software Upgrade (ISSU) in ASR 1000 is being migrated to an install workflow that provides a step-by-step upgrade/downgrade. Starting from IOS-XE 17.6.1, the following items will be disabled:

  • The ISSU load version command set including issu loadversion, issu runversion, issu acceptversion, andissu commitversion.

  • Dual IOSd ISSU commands.

  • Bundle mode ISSU workflow.



Note

Starting with Cisco IOS XE 17.3.x, 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:

  • Cisco Smart Software Manager (CSSM),

  • Cisco Smart License Utility (CSLU), and

  • Smart Software Manager On-Prem (SSM On-Prem).


New and Changed Software Features

Table 1. New Software Features in Cisco ASR 1000 Series Release Cisco IOS XE 17.7.1a

Feature

Description

Attaching Extended Color Communities to BGP VRF

This feature introduces new methods of attaching extended color communities to a prefix. A color community is an indicator of the bandwidth or latency level of the traffic being sent to the prefix and these are following new ways of attaching them to the prefix: VRF export coloring, VRF import coloring, Route Redistribution coloring into BGP and Neighbor inbound coloring.

EVPN VPWS over Preferred Path Fallback Disable

This enhancement allows you to configure an EVPN-VPWS over a preferred path using SR-TE policy. The command preferred-path segment-routing traffic-eng policy includes the fallback disable option, which allows you to configure fallback behaviour.

Flexible NetFlow Support on BD-VIF

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.

Multicast group calculation

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.

Support For Autoroute Announce On ISIS

Autoroute announcement is a method to steer traffic away from congested links and therefore, helps to use the network efficiently. This enhancement provides ISIS as an alternative routing protocol for the autoroute announce feature that currently uses only OSPF.

Support for EVPN over MPLS IRB Multi-Homing

This feature enables redundant network connectivity via Multihoming by allowing a CE device to connect to more than one PE device therefore preventing disruptions in the network. This Multihoming IRB solution is supported on Cisco ASR 1000 routers through the following features:

  • IPv4 and IPv6 MAC-IP Binding

  • ARP and ND Synchronization

  • MAC-IP Proxy Route

  • L3 ECMP via MAC-IP Proxy Route

  • MAC-IP Mobility

  • Host discovery via subnet prefix

  • ARP and ND flooding suppression

Tunnel protection for IPIP with NAT-T

When you configure the tunnel protection on an IPIP tunnel, the NAT-T configuration on the IPsec tunnel works as expected. However, the incoming packets are not processed though the Internet Security Association and Key Management Protocol and IPsec Security Association are correctly generated. To ensure that the tunnel protection on the IPIP tunnel works seamlessly, configure the tunnel mode GRE IP on both endpoints.

VLAN Manual Load balancing on Q-in-Q Interfaces

This feature introduces VLAN manual load balancing on port-channel Q-in-Q interfaces using the encapsulation dot1q second-dot1q primary secondary command. Using this command, you can manually assign VLAN subinterfaces to primary and secondary Gigabit Ethernet Channel member links, and direct traffic flows to a particular subinterface bucket with the load-balancing algorithm.

Cisco Unified Border Element (CUBE) Features

YANG Configuration Models for CUBE

From IOS-XE Cupertino-17.7.1a, YANG models are now available to configure and manage CUBE.

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.

Programmability Features

Converting IOS Commands to XML

This feature helps to automatically translate IOS commands into relevant NETCONF-XML or RESTCONF/JSON request messages.

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 ReportsUsage 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.

Note 
You cannot use a factory-installed trust code to communicate with CSSM. See: Overview, Trust Code.

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.

See: license smart (global config).

Cisco Bug Search Tool

Cisco Bug Search Tool (BST) is a gateway to the Cisco bug-tracking system, which maintains a comprehensive list of defects and vulnerabilities in Cisco products and software. The BST provides you with detailed defect information about your products and software.

Resolved and Open Bugs for Cisco IOS XE Cupertino 17.7.x

Resolved Bugs for Cisco IOS XE 17.7.2

Bug ID

Description

CSCvz67279

SELINUX-5-Mismatch Log on devices

CSCvz59621

MKA Session not coming up on EVC

CSCwa24717

Mutex crash seen in MLPPP in function cleaning bundle links

CSCwa67101

Netflow exporter statistics not increasing on MFR interface with frame-relay fragmentation.

CSCwb21195

Device sees Anti-Replay drops when sequence number is beyond 32 bit

CSCvz87460

Device MD5 signature does not match failure while upgrading to 17.3(1r) rommon

CSCvz81956

CHASSIS_MONITOR_ONLINE_TIME_EXCEEDED: R0/0: cmand: Reloading F0 because it has failed to come online

CSCvy57681

Unexpected reboot of IOS-XE Router in BQS QM @ cpp_qm_proc_rt_commit

CSCwa01804

Device ucode crash with PPE DTL transfer error during IP reassembly

CSCwa17720

Router rebooted de to watchdogs after issuing the commands sh crypto mib ipsec commands

CSCwa11150

E1 configurations (under Serial interface) lost after reload.

CSCwa76260

IKEv2 Deprecated Ciphers denied by Crypto Engine CDSL - PSB Security Compliance - DES, 3DES, DH1/2/5

CSCwa49902

MGCP automatic configuration fails after IOS-XE upgrade on device

CSCwa15085

Device Crash due to Stuck Thread with appnav-xe dual controller mode.

CSCwa80474

IKEv2 Deprecated Ciphers denied by Crypto Engine CDSL - PSB Security Compliance - MD5, SHA1

CSCvx28426

Device may crash due to Crypto IKMP process

CSCwa01293

ZBFW: Optimized policy traffic failure due to OG edit error

CSCwa18177

Flapping bidirectional/unidirectional packet capture option with ipv4 filter for long time failed

Open Bugs for Cisco IOS XE 17.7.2

Bug ID

Description

CSCwa80357

Ezman process continuously crashes with macsec fips mode enabled and reloaded

CSCwa95092

When Object-group used in a ACL is updated, it takes no effect

CSCvv82322

Link issue when using macsec

CSCvz74322

"Shutdown" command visible in running config after reload of device

CSCwb56841

ENTITY-MIB polling failed after ESP switchover

CSCwa52627

Incorrect Tx/Rx optical power values reported for QSFP transceivers

CSCwa84448

Intersite cloudsec enabled packets with <60 byte across device getting dropped when PTP is enabled

CSCwb22552

Platform abnormal Kerlog log is produced when port in shutdown state

CSCwb55514

Crash seen after enabling "platform qos port-channel-aggregate"

CSCwb04815

NHRP process taking more CPU with ip nhrp redirect configured

CSCwb76976

Netflow sip destination/source field contains garbage value

CSCvz28950

DMVPN phase 2 connectivity issue between two spokes

CSCvz91913

Bay 2 startup config of 40Gbps not applied on reload

CSCwa25614

Exec attempted to lock a semaphore, already locked by itself

CSCvz62601

Device high CPU on LC process mcpcc-lc-ms and link flaps

CSCwb73395

Need CLI option to disable ALG

CSCvx00230

IOS-XE device may show input/output rate values even if the interface is in admin down state.

CSCwa94158

Device media type is not correct after removing an SFP

CSCwa46760

Incorrect memory utilisation value sent to vManage

CSCvz65764

Peer MSS value showing incorrect

CSCwb78228

Platform rebooted unexpectedly with reason "LocalSoft"

CSCwb25137

[XE NAT] Source address translation for multicast traffic fails with route-map

CSCwb78423

Excessive packet loss observed during DMVPN tunnel flapping

CSCwb66749

when configration ip nat inside/outside on VASI intereface,ack/seq number abnormal

CSCwb55683

Large number of IPSec tunnel flapping occurs when underlay is restored

CSCwb74821

yang-management process confd is not running, controller mode 17.6.2a

CSCwa13553

Device QFP core due to NAT scaling issue

CSCwb11389

NAT translation stops suddenly(ip nat inside doesn't work)

CSCwb51238

Router reload unexpectedly two times when enter netflow show command

CSCwb61073

BQS Failure - QoS policy is missing in hardware for some Virtual-Access tunnels after session flaps

CSCwa66916

SCCP auto-configuration issues with multiple protocols

CSCvz94966

Device throughput drop of 10% from 17.3 to 17.6 Release

CSCvz89354

Router Running 17.x.x Crashes Due to CPUHOG When Walking ciscoFlashMIB

CSCwb79141

UCODE Crash with mpass function

CSCwb08186

E1 R2 - dnis-digits cli not working

CSCvz91309

Crash due to IOSXE-WATCHDOG due to management port traffic storm

CSCwb12647

Device crash for stuck threads in cpp on packet processing

CSCwa48512

CoR intercepted DNS reply packets dropped with drop code 52 (FirewallL4Insp) if UTD enabled also

CSCwb41907

CPP uCode crash due to ipc congestion from dp to cp

CSCwb74917

Device incorrectly drops ip fragments due to reassembly timeout

CSCwa67398

NAT translations do not work for FTP traffic

CSCwb76509

Assert failure while showing FTM (Forwarding Traffic Manager) data in NH TYPE switch case

CSCwa84919

"Revocation-check crl none" does not failover to NONE DNAC-CA

CSCwb78173

CSDL failure: IPSec QM Use of DES by encrypt proc is denied

CSCwb46649

NAT translation don’t show (or use) correct timeout value for an established TCP session

CSCwb68897

"Total output drops" counter in "show interface" on Port-channel doesn't work properly

CSCwb02142

Traceback: fman_fp_image core after clearing packet-trace conditions

CSCwb29362

Evaluation of IOS-XE for OpenSSL CVE-2022-0778 and CVE-2021-4160

CSCvz34668

Static mapping for the hub lost on one of the spokes

CSCwa74499

ZBFW seeing the SIP ALG incorrectly dropping traffic and resetting connection

CSCwb76866

CSDL failure: Use of MD5 by IPSEC key engine is denied

CSCwa68540

FTP data traffic broken when UTD IPS enabled in both service VPN

CSCwb79138

Device after the upgrade starts dropping GRE tunnel packets

Resolved Bugs for Cisco IOS XE 17.7.1a

Bug ID

Description

CSCvz98446 VG400 crashed when changing Debug Level
CSCvz58895 IOS-XE unable to export elliptic curve key
CSCvz65545 ISIS reports encode error when NSF cisco if configured for GRE tunnel number greater than 65535
CSCwa26599 FN980 new signed Telit modem firmware FN980M_38.02.X92 upgrade failed
CSCvz86591 VRF-aware static NAT with route-map and reversible not working
CSCvy69846 Guestshell:.py files stored under /home/guestshell are lost after reboot on 1ng device
CSCvy73165 ASR1hx,GD:10G interfaces supports multirate:Mismatch in autoneg/speed in sh run and sh sdwan run
CSCvw16093 Secure key agent trace levels set to Noise by default
CSCwa10915 ASR1k PFRv3: Elephant flow will trigger performance monitor exporting more than 50% byte loss
CSCvz11362 ASR fails to install rekey causing traffic drop
CSCvt66541 Crypto PKI-CRL-IO process crash when PKI trustpoint is being deleted

CSCvy34805

Consecutive Multicast Crashes in ISR4K

CSCvy92696

Cosmetic: 'Logging host' configuration inconsistent between sdwan and IOS configuration

CSCvz30670

Qos issue on IPv6 Virtual access (tunnel ipsec) interface ASR1k

CSCvz14745

Memory leak seen when using DNS with IP SLA

CSCvy27721

IOS-XE Router may experience unexpected reboot with X25 RBP

CSCvy45095

ipv6 ebgp multihop session remains in "idle" state after removal and recreation of the config

CSCvy72210

Cisco IOS XE crash after executing 'show flowspec ipv4' command

CSCvy42216

"switchport trunk native vlan xx" gets removed when upgrading from 16.12.x to 17.3.3

CSCvy53885

ip pim rp-candidate command removed after reload when group list is configured

CSCvz21812

QoS policy update with "random-detect dscp" configuration get rejected on device side

CSCvy54964

Large tx/rx rate on Dialer interface in show interface output.

CSCvy23400

MC-LAG feature cannot preserve administratively shut down sub-interfaces

CSCvy99942

Netconf: Logging to syslog stops working in certain scenarios

CSCvy93946

Removal of SHA-1 HMAC Impacting ability to SSH

CSCvy83154

MAG is not detecting the path UP after several reboots

CSCvy29106

ASR1K crashed on a Eigrp enabled device when Netconf get operation was used

CSCvw13682

L3 connected lite session not coming up, stuck in data-plane(qfp)

CSCvx62167

Route-map corruption when configured using Netconf with ncclient manager

CSCvy22343

Crash after reapplying BGP/ attempt to initialize an initialized wavl tree

CSCvy53210

ASR1002-HX running ISG w/ IOS v17.3.3 Crashed and caused a major outage of 40K EoGRE sessions

CSCvy91121

SSS manager Crash seen on latest polaris_dev image

CSCvy08748

OSPF summary-address isn't generated though candidate exists

CSCvy63983

vManage showing wrong interface status in GUI

CSCvy24754

Netconf-yang: no special characters allowed in ACL

CSCvz89043

Prevent SIP services from being blocked even if license usage ACK was not received

Open Bugs for Cisco IOS XE 17.7.1a

Bug ID

Description

CSCvz67279

SELINUX-5-Mismatch Log on ASR1002HX and 8500 Platforms

CSCvz87460

ASR 1000-RP2|VID>V07|16.9.7 MD5 signature does not match failure while upgrading to 17.3(1r) rommon

CSCvz95158

ASR1K-HX: IPSec Led doesn't lit even though module is correctly installed

CSCwa12061

IOS 17.x/RP3 copy process / file transfer to USB fails for large files>2GB size

CSCvz92954

Device UTD Container doesn't come up after a reboot

CSCwa20814 Device hitting vulnerability CVE 2008-5161
CSCwa46001 VRRP traffic sent while the device boots will congest the interface queue causing taildrops
CSCwa42344 SDWAN crash seen @ IOSXE-WATCHDOG: Process = OSPF-101 Hello

CSCvz72871

Multicast traffic received over DMVPN tunnel are dropped on RP and not forwarded downstream.

CSCwa27659

virtual VRRP IP address unreachable from the BACKUP VRRP

CSCvz41067

IP Community-list config out of sync in sdwan and ios-xe

CSCwa22665

Memory leak in scaled EIGRP DMVPN implementation due to EIGRP: mgd_timer

CSCvw06937 SNMv3 traps failing with initial configuration

CSCvz86580

Unable to remove the BGP neighbor statement through vManage template.

CSCvz20285

SDWAN image info not updated in packages.conf when upgrading in autonomous mode

CSCvz55553

BGP routes refreshing in the routing table after adding "bgp advertise-best-external"

ROMmon Release Requirements

For more information on ROMmon support for Route Processors (RPs), Embedded Services Processors (ESPs), Modular Interface Processors (MIPs), and Shared Port Adapter Interface Processors (SIPs) on Cisco ASR 1000 Series Aggregation Services Routers, see https://www.cisco.com/c/en/us/td/docs/routers/asr1000/rommon/asr1000-rommon-upg-guide.html.


Note

After upgrading the ROMmon to version 17.3(1r), you cannot revert it to a version earlier than 17.3(1r) for the following platforms:

  • ASR 1001-X

  • ASR 1001-HX

  • ASR 1002-HX

This restriction is only applicable for these platforms. If you have upgraded to ROMmon version 17.3(1r) on any other platform, reverting to an earlier version of ROMmon is permitted and does not cause any technical issues.


Related Documentation

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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.