Trying to connect two routers vial serial cable.

I have one 2651xm and 2524 trying to connect both via serial cable.

all serial ports i have put no shutdown command. tried 3 different cables.

So what happens is the green light on 2651 comes up and it shows on the screen port is up but after a while it shows port is down.

when i issue show cdp neighbours command it doesn't show me the router connected.

Am I missing any command on the routers?

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Comments

mikeybinec

clock rate on the DCE end of the cable?

Determine which cable is the DCE (If using a DB60 that's easy)

router# show controll s1/0

TOP_MIDDLE#sh controll s1/0
CD2430 Slot 1, Port 0, Controller 0, Channel 0, Revision 19
Channel mode is synchronous serial
idb 0x8157E27C, buffer size 1524, V.35 DCE cable

router(config)#int s1/0
router(config-if)#clock rate 64000

JeanM

What commands did you issue on each connected serial interface?

sagarmistry

yupp guys, didn't set the clock rate. saw it on a youtube video and it worked!

mikeybinec

I got one right?? YAYYYYYYYYYYYYYYYYY

no!all!

I had a similar problem connecting my two 2610's via DTE/DCE crossver. I set the clock rate and everything and the interface was still up/down. Chalked it up to a bad cable or card...I just went with two 2851's instead