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New Member

EIGRP over DS3

Hi,

I'm trying to run EIGRP between two 3662 conected using an DS3 link terminated over NM-1A-T3 modules on both routers. The DS3 circuit is upand I'mable to ping/telnet between the routers, but EIGR neighbour relations does not formbetween the routers.

The configuration is pretty simple and staright forward and using a similar configuration i've made the routers talk through EIGRP across a T1 link.

Any ides why this is happening..the EIGRP config on both routers is as follows.

Router -A

router EIGRP 100

network 10.10.20.32 0.0.0.15

no auto-summary

no eigrp log-neighbor-changes

Router-B

router EIGRP 100

network 10.10.20.32 0.0.0.15

192.168.18.0 0.0.0.255

no auto-summary

no eigrp log-neighbor-changes

192.168.18.0/24 is the LAN subnet of router-B

ANy idea why this is happening??

Thanks and Regards,

jimmy.

3 REPLIES
New Member

Re: EIGRP over DS3

check if anything configured on the interfaces that might stop eigrp from working

amdcent

New Member

Re: EIGRP over DS3

I also have the following configuration but am very new to EIGRP so can't swear that it's necessary:

router eigrp 100

network 63.166.58.0 0.0.0.255

neighbor 208.247.138.253 FastEthernet0/0

neighbor 208.247.138.194 ATM3/0.23 (to another circuit)

no auto-summary

eigrp log-neighbor-changes

Hope this doesn't add confusion!

Gold

Re: EIGRP over DS3

First, check show ip eigrp interface to see if eigrp is picking the interfaces up up correctly. Next, ping 224.0.0.10 to see if you get a response from the other end of the t3 link--if not, multicast between the two routers isn't working correctly. Finally, if it is working, then you might have to go into eigrp packet debugging to see what packets you are getting across the link, and figure out what's going on. debug ip eigrp neighbor might help as well....

Russ

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