f/r & ei

From: ccie2be (ccie2be@nyc.rr.com)
Date: Wed Jun 15 2005 - 12:40:10 GMT-3


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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