[nsp] dot1q causes port error?

[Stephen J. Wilcox]

Continues..

 have tried 12.0(21)S5
 have tried 12.2(12a)

Still errors...

I can only assume these bugs are leading me astray and perhaps I just have a
plain old hardware fault?

Steve

On Tue, 26 Nov 2002, Stephen J. Wilcox wrote:

> Ok,
>  have switched to ISL
>  have turned off keepalives
>  have moved to IOS 12.0(5)WC5a
> 
> And the errors are still there..
> 
> Again, these show as output errors on teh rtr and input on sw. Perhaps the rtr
> has a bug and is generating this? [See separate email on changing rtr ios,
> perhaps that will fix this issue too!]
> 
> Steve
> 
> 
> On Mon, 25 Nov 2002, Temkin, David wrote:
> 
> > It's a known issue caused by keepalives.
> > 
> > See bug CSCdr22809
> > 
> > It's a hardware limitation on the switch.  The router sends keepalives
> > untagged and the switch can't deal with it.
> > 
> > Convert the trunk to ISL and they will go away.  I promise. :-)
> > 
> > -Dave
> > 
> > > -----Original Message-----
> > > From: Stephen J. Wilcox [mailto:steve@telecomplete.co.uk] 
> > > Sent: Monday, November 25, 2002 2:00 PM
> > > To: cisco-nsp@puck.nether.net
> > > Subject: [nsp] dot1q causes port error?
> > > 
> > > 
> > > Hi,
> > > 
> > > I've a Cat2924-XL-EN (c2900XL-c3h2s-mz-120.5.2-XU.bin) 
> > > connecting to a 7200 with IO-FE (c7200-js-mz.122-8.T5)
> > > 
> > > I'm running dot1q on them and seeing errors. I'm sure theres 
> > > no cable fault and have replicated this with different 
> > > hardware. I'm unable to find anything in the bug toolkit 
> > > (which doesnt appear to support IOS for switches very well) 
> > > and google showed nothing useful either.
> > > 
> > > ANyone else seen this and perhaps knows the problem?
> > > 
> > > relevant counters (no others show error)
> > > 
> > > Switch:
> > >      Received 89 broadcasts, 1698991 runts, 0 giants, 0 throttles
> > >      1819995 input errors, 121004 CRC, 0 frame, 44 overrun, 
> > > 132 ignored
> > > 
> > > Router:
> > >      16687740 packets output, 3005655898 bytes, 299991 underruns
> > >      299991 output errors, 0 collisions, 0 interface resets
> > > 
> > > Note the errors occur in the direction router to switch.
> > > 
> > > Also, pinging the switch or devices beyond the switch doesnt 
> > > appear to produce any packet loss that ought to be associated 
> > > to errored frames
> > > 
> > > Any thoughts?
> > > 
> > > Steve
> > > 
> > > 
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