What version of code is your xl switch running. This may be a cosmetic issue if you
are
dealing with different cdp versions. Are the ports on the router and switch both set
to
auto/auto for speed and duplex. If you have one side of the connection set to full
duplex
and the other side set to auto, you will get duplex mismatches. This is because the
side
that is set to auto is sending out FLP's, (fast link pulses), it is also waiting to
hear
FLP's. If it hears FLP's then it knows it can run full duplex. If it does not hear
FLP's, ie, the other side is incapable of Full Duplex or is hard set to Full Duplex,
then
the side set to auto will run at half duplex.
Joe
Richard Bosire wrote:
> check the port settings on Switch FastEthernet0/12, they should match what you have
>on
> your fa0,
>
> bosire
>
> Frank wrote:
>
> > i got many following alarm from my terminal,and i run"sh int fa0"and "sh
> > run",but i
> > got different result about the duplex of int fa0,which one should i believe?
> > how can solve the problem?(int fa0 is a port on AS5300)
> >
> > thanks,
> >
> > Frank
> >
> > 08:22:57: %CDP-4-DUPLEX_MISMATCH: duplex mismatch discovered on
> > FastEthernet0 (n
> > ot full duplex), with Switch FastEthernet0/12 (full duplex)
> >
> > FastEthernet0 is up, line protocol is up
> > Hardware is DEC21140, address is 0002.fdcd.09c7 (bia 0002.fdcd.09c7)
> > MTU 1500 bytes, BW 100000 Kbit, DLY 100 usec,
> > reliability 255/255, txload 1/255, rxload 1/255
> > Encapsulation ARPA, loopback not set
> > Keepalive set (10 sec)
> > Half-duplex, 100Mb/s, 100BaseTX/FX
> > ARP type: ARPA, ARP Timeout 04:00:00
> > Last input 00:00:02, output 00:00:00, output hang never
> > Last clearing of "show interface" counters never
> >
> > interface FastEthernet0
> > no ip address
> > duplex full
> > speed auto
> >
> > _________________________________
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>
> --
> _______________________________________________
> 互户互户互户互户互户互
>
> Richard Bosire
> Network Engineer CCNA,CCSE
> AfricaOnline (k) Ltd
> tel +254-2-243775 fax +254-2-243762
> http://www.africaonline.co.ke
>
> _________________________________
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> Report misconduct and Nondisclosure violations to [EMAIL PROTECTED]
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