Eigrp problem

[jawwalit]

Hi;

i use hub-spoke infrastructure, the hub routers are 3660 (two routers Primary , backup ISDN) and the spoke routers 2811 and 2651xm) i use eigrp routing protocol my problem is the neighbours between 2811 and the hub router frequently down give the following messege:

5 06:31:36.159: %DUAL-5-NBRCHANGE: IP-EIGRP(0) 1: Neighbor 10.1.2.1 (Serial0/1/0) is down: Interface Goodbye received

#terminal monitor

5 06:31:40.615: %DUAL-5-NBRCHANGE: IP-EIGRP(0) 1: Neighbor 10.1.2.1 (Serial0/1/0) is up: new adjacency

while neighbours 2651xm didnt go down, when i shutdown the ISDN link in the hub backup router the messeage disappear and the neighbours(2811) didnt go down, so can you please help me

thanks

[globalnettech]

Hello Amer,

can you check if EIGRP triggers the backup ISDN link to come up, and if that coincides with your EIGRP neighbor changes ? Make sure that you have EIGRP traffic excluded from your interesting traffic on your backup router.

If possible, can you post the configs of both 3660 routers, as well as the spoke routers ?

Regards,

GNT

[jawwalit]

no it exclude from interest traffic

dialer-list 1 protocol ip list 110

access-list 110 deny eigrp any any

access-list 110 deny icmp host 10.100.2.220 any

access-list 110 permit ip any 10.100.0.0 0.0.255.255

access-list 110 permit ip any 10.1.0.0 0.0.255.255

access-list 110 permit ip any 192.168.99.0 0.0.0.255