03-12-2008 03:51 AM - edited 03-03-2019 09:05 PM
I am trying to understand why I see a LOT of input errors on my WS-X4306-GB module in a 4506 chassis with a 1000BaseSX GBIC, which is connected to a Catalyst WS-C3750-24T, 1000BaseSX SFP.
The Catalyst 4506 is running cat4000-i9s-mz.121-19.EW1.bin and the Catalyst 3750 is running c3750-ipbase-mz.122-25.SEE3.bin
Interfaces are configured as follows - first the 4506:
interface GigabitEthernet6/5
switchport trunk encapsulation dot1q
switchport trunk allowed vlan 1,7,22
switchport mode trunk
switchport nonegotiate
qos trust dscp
tx-queue 3
priority high
end
And the Catalyst 3750:
interface GigabitEthernet1/0/2
switchport trunk encapsulation dot1q
switchport trunk allowed vlan 1,7,22
switchport mode trunk
switchport nonegotiate
priority-queue out
mls qos trust dscp
end
No errors are displayed on the 3750's interface counters, but a huge amount of input errors (no other errors) are displayed on the 4506.
No packet loss is experienced, everything appears to work normally. The 4506 connects to multiple 3750's, and all connections show a lot of input errors.
Any ideas what can be causing this?
03-12-2008 04:34 AM
Cabling is to look at. Had the same issue connecting an old 5509 supII to 3560. Many errors on the supII side. Once replaced cable wit a different type, things went back to normal (one error in a million).
08-13-2009 01:58 AM
Hi,
I am experiencing the same problem. Did you find an answer to this?
Regards,
Richard.
08-13-2009 03:47 AM
Have you replaced the fiber patch as recommended above ?
08-13-2009 09:16 AM
Please paste the output of:
sh int gi6/5 counters all
sh platform hardware int gi6/5 all
08-13-2009 09:17 AM
I bet they are 1504 dot1q tagged frames that the switch reports as input errors due to oversize but when the tag is stripped the frame is a valid nice 1500 byte one
08-14-2009 07:31 AM
Hi,
This sounds likely. If this is the case how do I prevent the input errors from clocking up?
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