Cisco 3550 Switch - Undersize Errors

[Jason Caron]

I have excessive errors on port fa0/24 which connects to my Cisco Router.  Anyone have any ideas as to how I can resolve the undersize errors on this port?

Thanks.

Core# show int counters errors

Port        Align-Err    FCS-Err   Xmit-Err    Rcv-Err UnderSize
Fa0/1               0          0          0          0         0
Fa0/2               0          0          0          0         0
Fa0/3               0          0          0          0         0
Fa0/4               0          0          0          0         0
Fa0/5               0          0          0          0         0
Fa0/6               0          0          0          0         0
Fa0/7               0          0          0          0         0
Fa0/8               0          0          0          0         0
Fa0/9               0          0          0          0         0
Fa0/10              0          0          0          0         0
Fa0/11              0          0          0          0         0
Fa0/12              0          0          0          0         0
Fa0/13              0          0          0          0         0
Fa0/14              0          0          0          0         0
Fa0/15              0          0          0          0         0
Fa0/16              0          0          0          0         0
Fa0/17              0          0          0          0         0
Fa0/18              0          0          0          0         0
Fa0/19              0       4039          0       4050         0
Fa0/20              0       1441          0       1453       281
Fa0/21              0          0          0          0         0

Port        Align-Err    FCS-Err   Xmit-Err    Rcv-Err UnderSize
Fa0/22              0          0          0          0    544533
Fa0/23              0          0          0          0         0
Fa0/24              0          0          0          1   5621416
Gi0/1               0          0          0          0         0
Gi0/2               0          0          0          0         0

interface FastEthernet0/24
description Router
switchport trunk encapsulation dot1q
switchport trunk allowed vlan 10,30,1002-1005
switchport mode trunk
no ip address
spanning-tree portfast
spanning-tree guard root

[Jon Marshall]

Jason

What IOS version are you running and are you experiencing any connectivity issues ?

Jon

[Jason Caron]

Cisco Internetwork Operating System Software
IOS (tm) C3550 Software (C3550-I9Q3L2-M), Version 12.1(11)EA1a, RELEASE SOFTWARE (fc1)
Copyright (c) 1986-2002 by cisco Systems, Inc.
Compiled Thu 17-Oct-02 23:02 by antonino
Image text-base: 0x00003000, data-base: 0x005C6A0C

ROM: Bootstrap program is C3550 boot loader

Core uptime is 14 hours, 26 minutes
System returned to ROM by power-on
System restarted at 15:05:32 PDT Tue Mar 23 2010
System image file is "flash:/c3550-i9q3l2-mz.121-11.EA1a.bin"

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Network speed has diminished recently; I'm imagining this is related.