Have you guys ever seen this?

R7(config)#interface ATM1/0.711 point-to-point
R7(config-subif)#ip summary-address eigrp 117 0.0.0.0 0.0.0.0
R7(config-subif)#^Z
R7#
04:19:34: %DUAL-5-NBRCHANGE: IP-EIGRP(2) 117: Neighbor 117.117.117.12
(ATM1/0.711) is down: summary configured

The neighbor never comes back up! Remove the summary

R7(config-subif)#no  ip summary-address eigrp 117 0.0.0.0 0.0.0.0 5
R7(config-subif)#
04:21:06: %DUAL-5-NBRCHANGE: IP-EIGRP(2) 117: Neighbor 117.117.117.12
(ATM1/0.711) is up: new adjacency
R7(config-subif)#

Comes back up!

On a hunch I decided to use AD 255:

R7(config-subif)#ip summary-address eigrp 117 0.0.0.0 0.0.0.0 255
R7(config-subif)#
04:23:55: %DUAL-5-NBRCHANGE: IP-EIGRP(2) 117: Neighbor 117.117.117.12
(ATM1/0.711) is up: new adjacency

It's up! Is this correct behavior?

-- 
Bryan Bartik
CCIE #23707 (R&S), CCNP
Sr. Support Engineer - IPexpert, Inc.
URL: http://www.IPexpert.com
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