[c-nsp] Possible interface counter bug, but wanted to check..

[Jeff Wojciechowski]

Yea just had my own counter anomaly from show service-module on a 2821 router running 12.4(22)T3 ip base:

Total Data (last 96 15 minute intervals):
    0 Line Code Violations, 0 Path Code Violations
    2147483647 Slip Secs, 0 Fr Loss Secs, 0 Line Err Secs, 0 Degraded Mins

Correct me if I am wrong but 96 x 15 min = 1 day.

2,147,483,647 seconds = 24,855.1348 days??? Cisco into time travel now? Think you need an enhanced IOS image for that :)

-Jeff


-----Original Message-----
From: cisco-nsp-bounces at puck.nether.net [mailto:cisco-nsp-bounces at puck.nether.net] On Behalf Of Gert Doering
Sent: Thursday, October 15, 2009 1:19 PM
To: Drew Weaver
Cc: cisco-nsp at puck.nether.net
Subject: Re: [c-nsp] Possible interface counter bug, but wanted to check..

Hi,

On Thu, Oct 15, 2009 at 12:56:07PM -0400, Drew Weaver wrote:
> We have a Gig-E connection going from a GSR to a 6500 and the 6500 
> appears to be showing almost double the amount of traffic/packets per 
> second than the GSR is showing in its interface counters

Not that anybody has ever heard of "counter bugs" in IOS before... :-)

> The 6500 is running:  12.2(18)SXD7b

This IOS is ancient.  

I have not seen obvious counter bugs of this sort on our 6500s yet, but the oldest IOS we've ever used there is SXF.  So it might or might not be an old-IOS-bug...

If you sum up *other* interfaces on these boxes, or compare the interface byte counters, do they agree with the GSR or the 6500?  (Since the values are *so* different, just getting a rough idea from looking at the interface counters every 5 minute and calculating the average bandwidth by hand should suffice)

gert

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