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Community Member

terminal monitor

*

hello

i am getting the error message

ho can i know the end point device BDCHSS10

my side is: fe0/1

Mar  2 12:56:08.663: %CDP-4-DUPLEX_MISMATCH: duplex mismatch discovered on Fast

Ethernet0/1 (not half duplex), with BDCHSS10 FastEthernet1/0/19 (half duplex

thanks golan

4 REPLIES
Hall of Fame Super Silver

Re: terminal monitor

Hello Golan,

use

sh cdp  n f0/1 detail

it should provide you the IP address of CDP neighbor, you may be able to access it using this IP address

Hope to help

Giuseppe

Community Member

Re: terminal monitor

i wrote the line and that is the answer

still i dont know whats the device

#show cdp n fastEthernet 0/1
Capability Codes: R - Router, T - Trans Bridge, B - Source Route Bridge
                  S - Switch, H - Host, I - IGMP, r - Repeater

Device ID        Local Intrfce     Holdtme    Capability  Platform  Port ID
BDCHSS10         Fas 0/1            126        R S I      WS-C3750-4Fas 1/0/19
London-TT#
*Mar  2 13:49:09.151: %CDP-4-DUPLEX_MISMATCH: duplex mismatch discovered on Fast
Ethernet0/1 (not half duplex), with BDCHSS10 FastEthernet1/0/19 (half duplex).

Re: terminal monitor

Golan,

You need the keyword detail on the end of that command: show cdp n Fa0/1 detail.

That way it will give you a lot more information, including the IP address of the 3750 switch.

You could probably get rid of the error by forcing your side of the link to be half-duplex, but that would not be the best solution.

It is also possible that you have tried to hard-code full duplex, but the other side is in auto.  If that is the case, then making your side auto would not only get rid of the error message, but would also make the link full duplex.

Kevin Dorrell

Luxembourg

Community Member

Re: terminal monitor

thank you vety much

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