for Cisco ASR 920 Series Aggregation Services Router

Improvements

Optics

This release launches the following new optics on selective hardware within the product portfolio. For details refer to the Transceiver Module Group (TMG) Compatibility Matrix.

SFP-TS-OC3STM1-I and SFP-TS-OC12STM4-I Optics support is extended to the following chassis:

• ASR-920-12SZ-IM
• ASR-920-24SZ-M
• ASR-920-12CZ-A
• ASR-920-12CZ-D
• ASR-920-4SZ-A
• ASR-920-4SZ-D

These TSOP smart SFPs can operate in the low latency mode and is used for rail signaling.

Note

The support for the ONS-SC-155-TSOP and ONS-SC-622-TSOP are deprecated and are replaced with the new TSoPs SFP-TS-OC3STM1-I and SFP-TS-OC12STM4-I optics, respectively. The software functionalities of the new TSoPs remain the same as the earlier TSoPs.

Software Features

• Framed SAToP System BERT

You can configure SATOP system BERT with framing under CEM circuits on T1 or E1 interfaces and verify if the BERT is stable and transmitted end-to-end.

• User-defined Remote Loopback on T1 Interfaces

You can customize the loopback codes on T1 in a 16-bit format in contrast to the standard 6-bit loop code on the 48-port T1 interface module.

Bug fixes

CSCwf07736 - CEM interface counters momentarily report error when x21 xconnect is cleared and re-established.
CSCwh30217 - With rate of OC12 we see "threshold sf-ber 3" getting added under show run command.
CSCwf86864 - CEM traffic flow is dropped in one direction when DEI bit set.

Open problems

CSCwh75614 - Increased CPU after upgrading router to 17.6.3 from 16.9.4 when 1000 SLM/DMM sessions are configured.
CSCwh69286 - Support required for LF and RF on Ethernet interfaces.
CSCwh82358 - Service instance IDs of integers 4001-5000 is not supported.