I'm wondering if anyone in the community has encountered this strange behaviour on a 3400EG-12CS.
Last night after upgrading the IOS on a few of these switch models, I noticed that ports with an SFP installed were coming up as 1000/half. At first I thought it may have been the IOS I was moving too (12.2.52se), but I reverted to several IOS versions to only get the same results.
Below is an example of the "show int status" of one of the switches:
vds4#show int status
Port Name Status Vlan Duplex Speed Type
Gi0/1 sem01_Port3 connected 464 half 1000 1000BaseSX SFP
Gi0/2 sem02_Port3 connected 464 half 1000 1000BaseSX SFP
Gi0/3 sem03_Port3 connected 464 full 1000 1000BaseSX SFP
Gi0/4 sem04_Port3 connected 464 full 1000 1000BaseSX SFP
Gi0/5 sem05_Port3 connected 464 half 1000 1000BaseSX SFP
Gi0/6 sem06_Port3 connected 464 half 1000 1000BaseSX SFP
Gi0/7 sep01r_Port1 connected 464 full 1000 1000BaseSX SFP
Gi0/8 FST-HEMI-01 Media connected 464 a-full a-1000 10/100/1000BaseTX
Gi0/9 mmc01_Port8 notconnect 464 auto auto Not Present
Gi0/10 notconnect 464 auto auto Not Present
Gi0/11 notconnect 464 auto auto Not Present
Gi0/12 MPEG Analyzer disabled 464 auto auto 10/100/1000BaseTX
Gi0/13 vds2_Gi0/1 connected trunk full 1000 1000BaseSX SFP
Gi0/14 vds2_Gi0/2 connected trunk full 1000 1000BaseSX SFP
Gi0/15 disabled 1 auto auto Not Present
Gi0/16 disabled 1 auto auto Not Present
Po1 connected trunk full 1000
Fa0 OOB Management (VM connected routed a-full a-100 10/100BaseTX
vds4#show run int g0/1
Current configuration : 110 bytes
switchport access vlan 464
Some of the switches have an Port-Channel and they would come up in suspend. I'm suspecting due a duplex mismatch.
I also don't see any errors on the ports that are coming up as 1000/half which is weird.
The only way I am currently able to resolve this issue, is to move the sfps to a new port. Clearing the config/rebuild and re-seating the SFP doesn't seems to work.
Any thoughts would be greatly appreciated.
Thanks in advance