[nsp] Duplex Mode Problem

Oliver Boehmer (oboehmer) oboehmer at cisco.com
Mon Mar 17 17:34:37 EST 2003


> 
> * info at faraco.com (Info) [Mon 17 Mar 2003, 15:19 CET]:
> >  I've an AS5300 and I've connected both Ethernet0 and 
> FastEthernet0 of
> > the router to my switch.
> >  I've configured FastEthernet0 for FullDuplex 100M and 
> Ethernet0 mode
> > both on the router and the switch.
> >  But I get the following errors in syslog:
> >  
> >  268738: *Mar 17 00:16:03.998 UTC: %CDP-4-DUPLEX_MISMATCH: duplex
> > mismatch discovered on FastEthernet0 (not half duplex), 
> with fara5300
> > Ethernet0 (half duplex).
> > 268751: *Mar 17 00:17:03.998 UTC: %CDP-4-DUPLEX_MISMATCH: duplex
> > mismatch discovered on Ethernet0 (not full duplex), with fara5300
> > FastEthernet0 (full duplex).
> 
> Get a Cisco switch, or disable CDP on the interfaces.

.. or configure "no cdp advertise-v2". Or, if you use a new 12.2T/12.2B
image, configure "no cdp log mismatch duplex" (CSCdp30476) to get rid of
those messages while still keeping the rest of cdp's functionality.

	oli



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