Cisco TAC and service unsupported-transceiver and no errdisable detect cause gbic-invalid commands

service unsupported-transceiver and no errdisable detect cause gbic-invalid article contains information regarding:

1. When to use #service unsupported-transceiver and #no errdisable detect cause gbic-invalid commands?
2. What #service unsupported-transceiver and #no errdisable detect cause gbic-invalid commands do?
3. Why are the #service unsupported-transceiver and #no errdisable detect cause gbic-invalid commands hidden?
4. Cisco TAC and #service unsupported-transceiver and #no errdisable detect cause gbic-invalid commands?

1. When to use #service unsupported-transceiver and #no errdisable detect cause gbic-invalid commands?

service unsupported-transceiver and no errdisable detect cause gbic-invalid can be used when one of the these following error messages show up after you insert optical transceiver in your Cisco router or switch port:

#1

%PLATFORM-SFP-3-DEV_ SFP_PID_NOT_SUPPORTED
PID: DWDM-10G-SFP-31.90,

#2

%PHY-4-UNSUPPORTED_TRANSCEIVER: Unsupported transceiver found in Gi1/0/0

#3

%GBIC_SECURITY_CRYPT-4-VN_DATA_CRC_ERROR: GBIC in port 65538 has bad crc

#4

gbic-invalid

#5

Warning: SFP gbic-security check fail

In many of the cases above messages could indicate that 3rd party optical transceivers are used in Cisco switches or routers and there are some deviations from the original modules which would be expected in the port which triggers the device for an alarm.

2. What #service unsupported-transceiver and #no errdisable detect cause gbic-invalid commands do?

When we see above mentioned alarm messages in Cisco devices, in most of the cases they can be fixed with use of:

#service unsupported-transceiver

#no errdisable detect cause gbic-invalid

Side note about the use of the commands: The commands are global commands, but some CISCO equipment may require it to be used as an interface command, for example:

#interface gi0/0/1

#service unsupported-transceiver

#no errdisable detect cause gbic-invalid

Using both commands allows the switch to ignore wrong Part ID`s in the optical module coding.

After this remove the SFP or other form-factor module, shutdown/no shutdown the port and insert back the module. This resolves the issue and helps to bring a third party optical transceiver to life.

3. Why are the #service unsupported-transceiver and #no errdisable detect cause gbic-invalid commands hidden?

#service unsupported-transceiver and #no errdisable detect cause gbic-invalid are old commands that previously were visible, for example in Cisco support section there is Catalyst 3850 Switch article mentioning these commands, however, with the newer Cisco IOS and newer switch/router models these commands have become undocumented and are among Cisco “hidden” commands.

4. Cisco TAC and #service unsupported-transceiver and #no errdisable detect cause gbic-invalid commands?

#service unsupported-transceiver and #no errdisable detect cause gbic-invalid require attention if Cisco TAC (Technical Assistance Centre) help is needed as commands are present in switch/router global configuration file. This is because Cisco TAC will be able to fully assist when the port has a genuine CISCO transceiver.

Nevertheless, if the switch/router is in a critical location, which might require Cisco TAC support, and uses the third party optical transceiver – We recommend: Contacting Us.  Once information regarding the problem will be received –  we will check and try best to assist in solving the problem so that equipment is functional, system is up and running and works perfect without the need of any of below commands:

#service unsupported-transceiver

#no errdisable detect cause gbic-invalid

Thank you for reading!

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We at EDGE Optical Solutions specialize in compatible optical transceivers. During more than 10 years of operation our team have acquired great expertise in a vast variety of the Cisco series devices (ASR, Nexus, MDS, ME, Catalyst, SMB and more) and can ensure perfect optical transceiver compatibility. For more information have a look at EDGE Optical Solutions Cisco compatible transceivers or Contact Us!