From: brussels (brussels@yandex.ru)
Date: Wed Jun 15 2005 - 13:07:08 GMT-3
hub forwards multicast hello packets between spokes. but unicast messages is droped due to a lack of mapping (static or inarp).
>Hi guys,
>
>This is interesting but confusing.
>
>R1, R2, and R3 are running eigrp over a hub and spoke f/r cloud with R2 as
>the hub.
>
>
>R1 doesn't ever see R3, the other spoke as an eigrp neighbor, but R3
>sometimes sees R1 as a neighbor.
>
>On R1, the neighbor state with R3 flaps up and down.
>
>On R2, the hub, ip split-horizon has been disabled.
>
>R3#sh ip ei n
>IP-EIGRP neighbors for process 100
>H Address Interface Hold Uptime SRTT RTO Q Seq
>Typ
>e
> (sec) (ms) Cnt Num
>0 183.1.123.1 Se0/1 172 00:02:03 1 5000 1 0
>1 183.1.123.2 Se0/1 136 00:40:21 36 216 0 10
>R3#uu
>BL-Rack3>1
>
>
>Notice the uptime for R1 (1831.1.123.1) is very small relative to R2.
>
>Moments later.
>
>R3#sh ip ei n
>IP-EIGRP neighbors for process 100
>H Address Interface Hold Uptime SRTT RTO Q Seq
>Typ
>e
> (sec) (ms) Cnt Num
>1 183.1.123.2 Se0/1 165 00:45:33 36 216 0 10
>
>And, I get these messages on R3:
>
>R3#
>*Mar 1 04:04:45.633: %DUAL-5-NBRCHANGE: IP-EIGRP(0) 100: Neighbor
>183.1.123.1 (
>Serial0/1) is up: new adjacency
>
>R3#
>*Mar 1 04:07:50.156: %DUAL-5-NBRCHANGE: IP-EIGRP(0) 100: Neighbor
>183.1.123.1 (
>Serial0/1) is down: retry limit exceeded
>R3#
>*Mar 1 04:07:50.156: destroy peer: 183.1.123.1
>
>
>R1(config-router)#do sh ip ei n
>IP-EIGRP neighbors for process 100
>H Address Interface Hold Uptime SRTT RTO Q Seq
>Typ
>e
> (sec) (ms) Cnt Num
>1 183.1.123.2 Se0/0 177 00:40:37 68 408 0 10
>0 183.1.17.7 Et0/0 14 00:49:41 145 870 0 19
>R1(config-router)#
>
>
>Anyone know what's going on? And, know what should be done about this?
>
>TIA, Tim
>
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