The Cisco ASR 920 Series Aggregation Services Routers provide a comprehensive and scalable set of Layer 2 and Layer 3 VPN services in a compact package. They are temperature-hardened, small form factor, with high throughput and low power consumption ideal for mobile backhaul, business services and residential voice, video, and data ("triple-play") applications.

Use the following commands to verify your software version:

• Consolidated Package— show version

• To downgrade from Cisco IOS XE Fuji 16.9.x release, always use a lower version of the ROMMON. If you downgrade with ROMMON version 15.6.(24r)S, it may result in a continuous boot loop and might crash.

• A downgrade from a secure FPGA image (image with a fix of caveats CSCvp67001, CSCvp86314, or CSCvp86329), to an image with nonsecure FPGA must not be attempted as it may result in the router getting stuck in a bootloop.

• IPsec is not supported on Cisco ASR-920-12SZ-A and Cisco ASR-920-12SZ-D routers in Cisco IOS XE Fuji 16.9.1 release.

• The default interface command is used to default the parameters under that interface. However, when speed is configured on the interface, the following error is displayed:

  Speed is configured. Remove speed configuration before enabling auto-negotiation

• Adding or deleting the Trunk Ethernet flow points (TEFPs) with scaled bridge-domain, without delay causes the Cisco ASR 920 Series router to crash.

• Virtual services should be deactivated and uninstalled before performing replace operations.

• The Cisco ASR920 Series Routers no longer support the controller and nid-controller commands for the Cisco ME1200 switch.

• The following interface modules (IMs) do not require the activation command for IM boot up, provided no other IM is activated in subslot 0/1 before.

  However, if an IM was activated in the system earlier, deactivate the previously activated IM before inserting a new IM in system.

  • 16-Port T1/E1 Interface Module

  • 32-Port T1/E1 Interface Module

  • 8-Port T1/E1 Interface Module

  • 4-port OC3/STM-1 (OC-3) or 1-port OC12/STM-4 (OC-12) Interface Module

  • 14-Port Serial Interface Module

  • 6-Port E and M Interface Module

  • 4-Port C37.94 Interface Module

• RS422 works on ports 0–7 only.

• Only the Cisco IOS XE Fuji 16.9.1 No Payload Encryption (NPE) image can be installed on the Cisco ASR-920-12SZ-A/Cisco ASR-920-12SZ-D routers.

• GNSS OIR is not supported on the Cisco ASR-920-12SZ-A/D routers.

  • Traffic is dropped when packets of size 64–100 bytes are sent on 1G and 10G ports.

    • For 64-byte packets, traffic drop is seen at 70% and beyond of the line rate.

    • For 90-byte packets, traffic drop is seen at 90% and beyond of the line rate.

    • For 95-byte packets, traffic drop is seen at 95% and beyond of the line rate.

  • Traffic is dropped when:

    • Traffic is sent on a VRF interface.

    • Traffic is sent across layer 2 and layer 3.

• The following restriction is applicable only to:

  • Cisco ASR-920-24SZ-IM, Cisco ASR-920-24SZ-M, and Cisco ASR-920-24TZ-M

  • Cisco ASR-920-12SZ-A and Cisco ASR-920-12SZ-D

  However, traffic is not dropped when the packet size is greater than 100 bytes, even if the packets are sent bidirectionally at the line rate.

• Field Notices—We recommend that you view the field notices for this release to determine whether your software or hardware platforms are affected. You can find field notices at http://www.cisco.com/en/US/support/tsd_products_field_notice_summary.html.

• Bulletins—You can find bulletins at http://www.cisco.com/en/US/products/sw/iosswrel/ps5012/prod_literature.html.

To view supported MIB, go to http://tools.cisco.com/ITDIT/MIBS/MainServlet.

For a list of accessibility features in Cisco ASR 920 Series Routers, see the Voluntary Product Accessibility Template (VPAT) on the Cisco website, or contact accessibility@cisco.com.

All product documents are accessible except for images, graphics, and some charts. If you would like to receive the product documentation in audio format, braille, or large print, contact accessibility@cisco.com.