Input rate and output rate counter disappear on interface

[bo2112260285]

Hi All

My topology

SWH01(gi0/1)<------------link1-------------->(gi0/1)SWH02

SWH01(gi0/2)<------------link2--------------->(gi0/2)SWH02

The both switch was configured etherchannel and It worked fine before . After I have changed the Etherchannel configuration to PVST configuration on the both switch. SWH02 is root brigde,the link1 is forwarding sate and the link2 is blocking state but when I go show interface gi0/1 on SWH02. The input rate and output rate counter disappear although there are traffic go though this link, because I can query this traffic counter information on a SNMP client. Please help me know and how to resolve this issue.

+SWH01

interface GigabitEthernet0/1
switchport trunk encapsulation dot1q
switchport trunk allowed vlan 2116,2301-2310
switchport mode trunk
speed nonegotiate

interface GigabitEthernet0/2
switchport trunk encapsulation dot1q
switchport trunk allowed vlan 2116,2301-2310
switchport mode trunk

+SWH02

interface GigabitEthernet0/1
switchport trunk encapsulation dot1q
switchport trunk allowed vlan 2116,2301-2310
switchport mode trunk
speed nonegotiate

interface GigabitEthernet0/2
switchport trunk encapsulation dot1q
switchport trunk allowed vlan 2116,2301-2310
switchport mode trunk

SWH02#show int gi0/1
GigabitEthernet0/1 is up, line protocol is up (connected)
  5 minute input rate 0 bits/sec, 0 packets/sec
  5 minute output rate 0 bits/sec, 0 packets/s

Thanks and Best Regards

[Amit Singh]

Did you try reverting the old config to see if that chages the behaviour? Which switches are these? What is the IOS running on these switches? Please paste the show version from the switches.

Cheers,

-amit singh

[bo2112260285]

Dear Amit

Thanks for your responding

I can't try revert to the old config because it will affect to our customer. The switch SWH01 be on the our customer side. You can refer the show version below on SWH02

show version
Cisco IOS Software, C3750 Software (C3750-ADVIPSERVICESK9-M), Version 12.2(46)SE, RELEASE SOFTWARE (fc2)
Copyright (c) 1986-2008 by Cisco Systems, Inc.
Compiled Thu 21-Aug-08 15:43 by nachen
Image text-base: 0x00003000, data-base: 0x01940000

ROM: Bootstrap program is C3750 boot loader
BOOTLDR: C3750 Boot Loader (C3750-HBOOT-M) Version 12.1(14r)EA1a, RELEASE SOFTWARE (fc1)

SWH02 uptime is 25 weeks, 3 days, 1 hour, 0 minutes
System returned to ROM by power-on
System restarted at 14:37:05 GMT Mon Jul 26 2010
System image file is "flash:/c3750-advipservicesk9-mz.122-46.SE.bin"

cisco WS-C3750G-24TS (PowerPC405) processor (revision M0) with 118784K/12280K bytes of memory.
Processor board ID CAT1042RH0A
Last reset from power-on
6 Virtual Ethernet interfaces
56 Gigabit Ethernet interfaces
The password-recovery mechanism is enabled.

Switch Ports Model              SW Version            SW Image                
------ ----- -----              ----------            ----------              
*    1 28    WS-C3750G-24TS     12.2(46)SE            C3750-ADVIPSERVICESK9-M 
     2 28    WS-C3750G-24TS     12.2(46)SE            C3750-ADVIPSERVICESK9-M 

Switch 02
---------
Switch Uptime                   : 18 weeks, 1 day, 5 hours, 45 minutes
Base ethernet MAC Address       : 00:24:C3:21:F3:00

P/S: SWH02 is stackable switch which include two 3750 catalyst switch

Please advice
Thank in advance

[Giuseppe Larosa]

Hello Bill,

this might be a known software bug of this platform

for example I have the same problem on a stack made of 2 X 3750 with 12.2(40)SE

rates are 0 even if we know traffic is on the interfaces

to be noted that in SNMP tools like MRTG or CACTI is possible to see the traffic loads of these same interfaces because packet and byte counters are still working

Hope to help

Giuseppe

[bo2112260285]

Hi Guiseppe

Thanks for your repply. I will take note about software bug of this flatform

Best Regards

[Matthew Blanshard]

CSCsz18634 matches this behavior and isn't fixed until 12.2(53)SE on the 3750 platform. 

-Matt