This is a two fold problem. If you're running CDP turn it off. Also you
will need to run the latest CATOS which is 5.4.2. We've had the same
issues at my company and we use the 6509 platform. Problem turned out to
be code. After banging away with the TAC on an unrelated issue TAC told
us to disable CDP if we were running it and the problem *should* go away.
Well, it did but not across all of our devices. It worked less than
half the time when running CATOS 5.4.1 (which also has a security issue).
We then upgraded to CATOS 5.4.2 per the TAC and the problem is gone.
Upgrade your cat and reload the router and the problem will go bye bye.
Cisco has been aware of this issue for some time now as there are many
people out there that have been experiencing this bug onn ALL hardware
types, network
and server.
Bob Davidovich
IP Engineering - Northpoint Communications
On Mon, 12 Jun 2000, Jeff Wheat wrote:
> We have a similar problem with a 3640 and a 2924XL. The FastEther
> is setup like the interface below and the switch is set for 100M
> / Full Duplex. I had the same thing happening with a couple 7513's
> and the 2924XL though in those cases, turning off keepalives solved
> it. This is not the case with the 36400/2924XL though. Even turning
> off the keepalives and making sure that the duplex and speed were
> locked at 100/full on both ends, the problem persists. So far Cisco
> has not been able to figure it out. We have replaced the 2924XL, as
> well as the cables and FastEther adapter. Any suggestions would be
> very much appreciated.
>
> Best regards,
> Jeff
>
> > -----Original Message-----
> > From: sthaug@nethelp.no [mailto:sthaug@nethelp.no]
> > Sent: Monday, June 12, 2000 11:39 AM
> > To: c.spurgeon@mail.utexas.edu
> > Cc: cisco-nsp@puck.nether.net
> > Subject: Re: [nsp] Ethernet errors between 7500/PA-FE-TX and 3548XL
> > switch
> >
> >
> > > Although it may sound odd, this is most likely an example of
> > > auto-negotiation performing as designed.
> >
> > Unfortunately, in my case this is not the cause of the problem. I have
> > the 7500/PA-FE-TX configured as a trunk, full duplex (speed is always
> > 100 Mbps here, IOS won't let you configure 10 Mbps):
> >
> > interface FastEthernet1/0/0
> > no ip address
> > no ip redirects
> > no ip directed-broadcast
> > no ip route-cache distributed
> > full-duplex
> >
> > and the 3548XL is explicitly configured as 100 Mbps full duplex:
> >
> > interface FastEthernet0/43
> > duplex full
> > speed 100
> > switchport trunk allowed vlan 1,201-203,1002-1005
> > switchport mode trunk
> >
> > And I'm still getting CRC errors on the 3548XL.
> >
> > Any other negotiation which might cause this problem (that can be turned
> > off)?
> >
> > Steinar Haug, Nethelp consulting, sthaug@nethelp.no
> >
>
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