Two Cisco routers using EIGRP and the same won't exchange routing updates
I have 2 cisco routers (2621 IOS 12.2(5), 2821 IOS 12.4.7) that are connected to the same LAN segment. Both routers are running IP routing via EIGRP. both EIGRP processes are suing the same AS (100). (this config is a transitional one as we move fropm the 2621 to the 2821).
The issue is that the 2821 does not receive routing updates from the 2621. It does not even see the 2621 as an EIGRP neighbor. Mean while the 2621 does see the 2821 as a neighbor.
The two routers can see each other, and if I set a static default route on the 2821 I can route out from the 2821 to anywhere\any network on the rest of the WAN network.
A brief layout of the connections:
[Active WAN] -- [S0/0.1 (2621) FE 0/0.1] -- [FE 0/1 Trunk Cat2950 switch FE 0/4 Trunk] -- [GE 0/0.1 (2821) S 0/0/0.200] -- [Furture WAN]
Both both interfaces on the routers are configured to be on Native VLAN 1 using dot1q encapsulation.
I have used this configuration at several other sites as a transitional with any issues. So I'm either to close to the problem and am being blind or something weird is going on. :)
The 2821 router was originally misconfigured with a bad stbnet mask, but that has ben fixed. Both routers have been restarted since the fix mas made just in cast there was something stuck i memory causing the problem.
Re: Two Cisco routers using EIGRP and the same won't exchange ro
Thanks guys. I resolved the problem.
Following olorunloba's advice I removed the cgmp statment from the interface, but the problem persisted. Then I removed the the "ip pim sparse-dense-mode" statment. Either removing that statment or removing the combination appears to have resolved the issue.
I am now getting routing updates to the 2821 router.
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