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Community Member

ASR920 SFP Issues

Have been experiencing a lot of issues with OIR with SFPs in the new ASR920 Platform (ASR-920-24SZ-M)

eg.

%TRANSCEIVER-3-CHECKSUM_ERROR: F0: iomd: Detected in the transceiver module in TenGigabitEthernet0/0/27, module disabled

also

%TRANSCEIVER-3-INIT_FAILURE

or

just a no show, no log errors but ...

sw1#show hw-module all entity

transceiver 24

  container index:        695

  module entity index:    0

  port index:             0

  chassis index:          0

  operational status:     (0) error

  non-zero xcvr sensors:

========================

 

After trying multiple IOS versions and trains, this issue appears to have all been fixed in

asr920-universalk9_npe.03.16.03a.S.155-3.S3a-ext.bin

All SFPs work reliably now including BXU/D, 10G-LR, 10G-ER etc

Cisco yet to post release notes for this IOS but I can't fault it in our network.

Notes:

1) Still obey the recommendation of waiting 30sec between removal and insertion of an SFP

2) Additionally upgraded to latest rom-mon too but was the IOS version above where all magically came good

upgrade rom-monitor filename bootflash:asr920-rommon.155-3r.S1.pkg r0

3 REPLIES 3
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Beginner

I've consistently had issues with ASR920's and SFPs not operating correctly on first boot-up of the device. Routinely, the 920 will have to be manually power cycled after being powered on the first time in the field to get the SFPs operational.

This behavior has been witnessed mostly on 3.16.00, but also on 3.16.01a. The version you are running seems more recent, so I will try to use that, too.

Highlighted

We've had the same issue with SFPs failing to pass traffic after a software reboot. We're using ASR-920-12CZ-A with SFPs in the TenGi0/0/13 slot. We've discovered inserting an SFP into TenGi0/0/12 results in TenGi0/0/13 suddenly passing traffic again.

Problem still there on 03.16.04.S

Highlighted

I am running into similar problems, except I am running much newer code:

 

asr920-universalk9_npe.03.18.00.SP.156-2.SP-ext.bin

 

Seems the optics have to be re-inserted after every power-on before they work...

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