If you do a "show conf", you can see if the interface has been placed in
loopback on the router.
If you can see a loopback command (for example loopback dte) on your
interface, simply disable it:
router#
router#conf t
router(config)#int ser 1/0
router(config-if)#no loopback dte
router(config-if)#end
router#wr mem
If you cannot see a loopback in the config, if must have been placed on your
CSU/DSU or at the local NIU.
Hth,
Ole
~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
Ole Drews Jensen
Systems Network Manager
CCNA, MCSE, MCP+I
RWR Enterprises, Inc.
[EMAIL PROTECTED]
~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
http://www.RouterChief.com
~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
NEED A JOB ???
http://www.oledrews.com/job
~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
-----Original Message-----
From: Sim, CT (Chee Tong) [mailto:[EMAIL PROTECTED]]
Sent: Friday, August 31, 2001 5:18 AM
To: [EMAIL PROTECTED]
Subject: what is mean there is a loop on the interface??? [7:18052]
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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