It means that any packet arriving at this interfae will be looped back.....
its just like the ip 127.0.0.1 but this is for
ip enviro. .... this type of loopback is harware that is why u r seeing ur
self in CDP .... try issuing the NO LOOP
on the interface or similar .... i didnt remembered.
and becuase of this loopback u cant get connectivity to others.
-Mamoor
"Sim, CT (Chee Tong)" wrote in message
[EMAIL PROTECTED]">news:[EMAIL PROTECTED]...
> I was informed that there is a loop in our interface, and it is not up.
> When I do a sh interface, I found it is up but there is a word (looped) as
> shown below. What is the meaning??? What happen ?? When I show cdp
> neighbor, I see the cdp neighbor of the interface is the router itself??
> Why???
>
> sin03>sh int s1/0
> Serial1/0 is up, line protocol is up (looped)
>
> sin03>sh cdp nei
> 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
> sin03 Ser 1/0 136 R c3660 Ser
1/0
> TYO02 Ser 1/1 154 R 1750 Ser 0
> HKG01 Ser 1/2 167 R 1750 Ser 0
> SYD02 Ser 2/1 157 R 1750 Ser 0
>
>
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