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

Note

The error message "PLATFORM-1-NOSPACE: SD bootflash : no space alarm assert" may occur in the following scenarios: Any sector of SD Card gets corrupted Improper shut down of router power outage. This issue is observed on platforms which use EXT2 file systems. We recommend performing a reload of the router. As a result, above alarm will not be seen during the next reload due to FSCK(file systems check) execution. However, If the error persists after a router reload, we recommend to format the bootflash or FSCK manually from IOS.

• The default command-name 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 from 0 to 7 only.

• MPLS VC label packet with time-to-live (TTL) value of 2 is dropped at egress MPLS PE device due to ASIC limitations. During PHP process, MPLS TTL value for the VC label is decremented by one with implicit-null. The VC label-related TTL value is set to 255 while imposing the VC label due to multiple VC switching scenarios.

  Use the no mpls ip propagate-ttl command as the Short Pipe mode for the required label.

• Interface naming is from right to left. For more information, see the Cisco ASR 920 SoftwareConfiguration Guide .

• Packet size greater than 1460 is not supported over IPsec Tunnel.

• Minimal traffic drop might be seen for a moment when higher rate traffic is sent through the IPsectunnels for the first time.

• IPsec is only supported for TCP and UDP and is not supported for SCTP.

• IPSec is supported only on the Cisco ASR-920-12SZ-A and Cisco ASR-920-12SZ-D routers.