I agree with Rick that this is a bug - except that I could not re-produce the issue.
I tested using the following "SP" blueprint IOS's. 12.2(11)T (note: VRF aware EIGRP not available until 12.2(15)T but it's not available on CCO any longer) 12.3(8)T11 12.2(18)S13 <--- closest I could get to your IOS Bryan I performed a whole heap of tests creating eigrp adjacencies between all these versions. I used the following interfaces types: FastEthernet Dot1q SubIF ATM P2P SubIf and they were placed either the following routing tables (except for 12.2(11)T for VRF see above note): Global <-> Global Global <-> VRF VRF <-> VRF After a lengthy amount of testing with the 0/0 summary, I could not re-create Bryans issue with any combination of the above interface types, tables or IOSs. Any chance Bryan you could re-try with the 12.2(18)S13 IOS I've listed above? Cheers, Con. On Sat, Aug 29, 2009 at 9:58 PM, Rick Mur<[email protected]> wrote: > Ah true, that's the advantage of a distance vector protocol :-) Still a > huge bug in IOS though > > -- > Rick Mur > CCIE2 #21946 (R&S, Service provider) > Sr. Support Engineer -- IPexpert, Inc. > Sent from my iPhone > On 29 aug 2009, at 22:43, Bryan Bartik <[email protected]> wrote: > > Yep, still does. The AD is just for the null route, > > On Sat, Aug 29, 2009 at 2:43 PM, Rick Mur <[email protected]> wrote: >> >> But does the summary get advertised then? I remember not. >> >> -- >> Rick Mur >> CCIE2 #21946 (R&S, Service provider) >> Sr. Support Engineer -- IPexpert, Inc. >> Sent from my iPhone >> On 29 aug 2009, at 22:17, Bryan Bartik <[email protected]> wrote: >> >> Thanks for the replies guys. Yep, It's c7200-p-mz.122-18.S2.bin. >> The AD 255 thing was a shot in the dark and it worked :) >> >> On Sat, Aug 29, 2009 at 2:13 PM, Con Spathas <[email protected]> >> wrote: >>> >>> Gday Bryan, >>> >>> A couple of questions: >>> >>> 1. Can you let me know IOS version/platform you're using (I want to >>> try it) - At a guess I'd say 7200 if you're playing with ATM. >>> 2. Is the summary you're configuring under a global or VRF interface? >>> 3. Any other kookie stuff going on where R7 might be receiving or >>> advertising a 0/0 from another protocol? (again to try and recreate >>> issue in my lab) >>> >>> I'll play with this first thing in the AM - it's telly (read: wind >>> down) time now! :-) >>> >>> Cheers, >>> Con. >>> >>> On Sat, Aug 29, 2009 at 7:12 PM, Bryan Bartik<[email protected]> >>> wrote: >>> > 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 >>> > >>> > _______________________________________________ >>> > For more information regarding industry leading CCIE Lab training, >>> > please >>> > visit www.ipexpert.com >>> > >>> > >> >> >> >> -- >> Bryan Bartik >> CCIE #23707 (R&S), CCNP >> Sr. Support Engineer - IPexpert, Inc. >> URL: http://www.IPexpert.com >> >> _______________________________________________ >> For more information regarding industry leading CCIE Lab training, please >> visit www.ipexpert.com > > > > -- > Bryan Bartik > CCIE #23707 (R&S), CCNP > Sr. Support Engineer - IPexpert, Inc. > URL: http://www.IPexpert.com > _______________________________________________ For more information regarding industry leading CCIE Lab training, please visit www.ipexpert.com
