From: Schmitt, Gregory (Gregory.Schmitt@xxxxxxxxxx)
Date: Mon Nov 29 1999 - 17:24:27 GMT-3
John,
This looks like the classic routing loop kiss of death.
Try denying all of the igrp only addresses from being redistributed into
ospf with your existing route-maps (especially the 172.17.x.x interfaces on
the router with this configuration).
I bet what's happening is that since igrp has a lower admin distance than
ospf, in the redistribution igrp is taking over! And it won't show up
immediately! ;-)
Bet you'll see this in some form or other in the lab!
Cheers,
Greg
> ----------
> From: Reed, John
> Reply To: Reed, John
> Sent: Monday, November 29, 1999 10:54 AM
> To: ccielab@groupstudy.com
> Subject: Redistributing OSPF VLSM into IGRP with other protocols
>
> Hello.
>
> I have a typical scenario that I am trying to troubleshoot, and cannot get
> the redistribution to keep working more than a few hours.
>
> Using a Class B network as the available address space(172.17.59.x) I have
> broken the network into groups of 64 addresses. Three of these groups are
> in the OSPF AS, subnetted further, and the last is in the IGRP routing AS
> (255.255.255.192).
>
> I find that I can use this command at the border router to get the
> redistribution working between the protocols.
> The Summary statements for each of the subnets NOT covered by IGRP are
> placed in the OSPF network, and the redistribution route-map access-list
> has
> only the networks on the other side of the remote IGRP router
>
> (MY neighber IGRP router is able to ping the entire network for only about
> twenty minutes, and then the config stops working for some reason, as I
> add
> BGP, Appletalk, IPX and DLSW to the network.)
>
>
> router ospf 210
> summary-address 172.17.59.64 255.255.255.192
> summary-address 172.17.59.128 255.255.255.192
> summary-address 172.17.59.192 255.255.255.192
> redistribute igrp 10 subnets route-map intoOSPF
> network 172.17.59.80 0.0.0.15 area 0
> network 172.17.59.64 0.0.0.15 area 2
> network 172.17.59.225 0.0.0.0 area 0
> area 2 virtual-link 172.17.59.226
> !
> router igrp 10
> redistribute ospf 210 route-map intoIGRP
> passive-interface Ethernet1/1/0
> passive-interface Ethernet1/1/1
> passive-interface Serial4/0/0.4
> passive-interface Serial4/0/0.5
> passive-interface Loopback1
> network 172.17.0.0
> !
> no ip classless
> access-list 40 permit 10.0.0.0 0.255.255.255
> access-list 50 deny 10.0.0.0 0.255.255.255
> access-list 50 permit any
> !
> route-map intoIGRP permit 10
> match ip address 50
> set metric 10000 1000 255 1 1500
> !
> route-map intoOSPF permit 10
> match ip address 40
> !
>
> Any Ideas about what I am doing wrong? There are no special commands on
> the
> Ethernet or Serial interfaces and I have not applied any filters as I
> start
> up the other protocols.
>
> John.D.Reed@digital.com <mailto:John.D.Reed@digital.com>
> Compaq Professional Services
> Columbia, SC 29212
> work (803) 781-9571
> fax (803) 781-9382
>
>
>
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