I recently found out something weird with the GLC-SX-MM= modules on the 4506-GB-T line card.
When i change the media type to RJ-45 and remove the GBIC from the port and insert it on any other port on the line card, i get an SPF serial integrity check failure and the port stops forwarding packet. It does not resume even after doing a shut or noshut. Rebooting the switch is the only alternative to revive the port
This does not seem to be a problem if the port was configured to be a media type of SFP and the same action was performed.
So if i want to remove the GBIC from the port and eventhough the media-type is RJ-45, you need to reverse the media type to SFP, remove it and configure it back to RJ-45.
This seems to be very strange as these modules are hot swappable but you end up needing a downtime in the above case.
Is this some sort of limitation that i could not find out in CCO?
As we all know these modules are hot pluggable so there should not be any problem when it is switches from one port to another.
The error message which we get because of duplicate serial number can be because of cloned SFP SEEPROM. Can you confirm if it is Cisco SFP module also have you tried using different SFP module and is the same error reported? I mean can you reproduce this problem with another SFP module?
If another SFP module also gives the same error is it possible for you to reseat that specific line card once or may be power that specific line card and bring that back up.
We are pleased to announce availability of Beta software for 16.6.3. 16.6.3 will be the second rebuild on the 16.6 release train targeted towards Catalyst 9500/9400/9300/3850/3650 switching platforms. We are looking for early feedback from custome...