From: Hong Chan (howard.chan34@gmail.com)
Date: Tue Aug 12 2008 - 02:59:49 ART
Still cannot figure out the problem.
I suggest you to use the route-map to set the metric for the OSPF->RIP
route(s), eg., set metric 5, then see if the route-map leaks route or not.
Moreover, I see the "passive-interface default" but I don't see any "no
passive-interface ex/x" under router rip. Is that normal to get the route
update from redistribution?
2008/8/12 Igor Manassypov <imanassypov@rogers.com>
> Here it goes, its a bit long but simple. I realize there are other options
> for accomplishing this, however I am puzzled why this setup is not working
> as expected. Out of curiosity, on a different testbench I setup a mirrored
> route-map from rip to ospf redistribution allowing just the summary, and
> that worked perfectly. I am wondering if RIP is behaving differently with
> route-maps?!!
>
> Router R1 is connected to BB1. R1 is running both ospf and rip, and BB1 is
> running only rip.
>
> Here is the config on R1:
>
> router rip
> version 2
> redistribute ospf 77 metric 1 route-map OSPF->RIP
> passive-interface default
> network 150.1.0.0
> neighbor 150.1.1.254
> no auto-summary
>
> router ospf 77
> router-id 77.77.1.1
> log-adjacency-changes
> area 167 virtual-link 77.77.7.7
> redistribute rip subnets route-map RIP->OSPF
> network 77.77.1.1 0.0.0.0 area 1
> network 77.77.12.1 0.0.0.0 area 1
> network 77.77.17.1 0.0.0.0 area 167
> network 77.77.21.1 0.0.0.0 area 1
> neighbor 77.77.21.2
> neighbor 77.77.12.2
>
> ip prefix-list SUMMARY seq 5 permit 77.0.0.0/8
> ip prefix-list SUMMARY seq 10 deny 0.0.0.0/0 le 32
> route-map OSPF->RIP permit 10
> match ip address prefix-list SUMMARY
> route-map OSPF->RIP deny 20
>
> R1#sh ip route
> Codes: C - connected, S - static, R - RIP, M - mobile, B - BGP
> D - EIGRP, EX - EIGRP external, O - OSPF, IA - OSPF inter area
> N1 - OSPF NSSA external type 1, N2 - OSPF NSSA external type 2
> E1 - OSPF external type 1, E2 - OSPF external type 2
> i - IS-IS, su - IS-IS summary, L1 - IS-IS level-1, L2 - IS-IS
> level-2
> ia - IS-IS inter area, * - candidate default, U - per-user static
> route
> o - ODR, P - periodic downloaded static route
>
> Gateway of last resort is not set
>
> 77.0.0.0/8 is variably subnetted, 20 subnets, 3 masks
> C 77.77.1.0/24 is directly connected, Loopback0
> O IA 77.77.3.0/24 [110/76] via 77.77.17.7, 04:53:48, Ethernet0/0
> O IA 77.77.4.0/24 [110/13] via 77.77.17.7, 04:53:48, Ethernet0/0
> O IA 77.77.5.0/24 [110/13] via 77.77.17.7, 04:53:48, Ethernet0/0
> O 77.77.6.0/24 [110/12] via 77.77.17.7, 04:53:48, Ethernet0/0
> O 77.77.7.0/24 [110/11] via 77.77.17.7, 04:53:48, Ethernet0/0
> O 77.77.8.0/24 [110/12] via 77.77.17.7, 04:53:48, Ethernet0/0
> O 77.77.9.0/24 [110/12] via 77.77.17.7, 04:53:48, Ethernet0/0
> O 77.77.10.0/24 [110/12] via 77.77.17.7, 04:53:48, Ethernet0/0
> C 77.77.12.0/30 is directly connected, Serial1/0
> C 77.77.17.0/24 is directly connected, Ethernet0/0
> C 77.77.21.0/30 is directly connected, Serial1/1
> O IA 77.77.28.0/24 [110/12] via 77.77.17.7, 04:53:49, Ethernet0/0
> O 77.77.33.0/24 [110/11] via 77.77.17.7, 04:53:49, Ethernet0/0
> O IA 77.77.36.0/24 [110/75] via 77.77.17.7, 04:53:49, Ethernet0/0
> O 77.77.44.0/24 [110/11] via 77.77.17.7, 04:53:49, Ethernet0/0
> O IA 77.77.48.0/24 [110/12] via 77.77.17.7, 04:53:49, Ethernet0/0
> O IA 77.77.58.0/24 [110/12] via 77.77.17.7, 04:53:49, Ethernet0/0
> O 77.77.67.0/24 [110/11] via 77.77.17.7, 04:53:49, Ethernet0/0
> O IA 77.0.0.0/8 [110/11] via 77.77.17.7, 04:53:49, Ethernet0/0
> R 199.172.0.0/24 [120/1] via 150.1.1.254, 00:00:06, Ethernet0/1
> 150.100.0.0/24 is subnetted, 1 subnets
> R 150.100.1.0 [120/1] via 150.1.1.254, 00:00:06, Ethernet0/1
> 150.1.0.0/24 is subnetted, 1 subnets
> C 150.1.1.0 is directly connected, Ethernet0/1
> 150.250.0.0/24 is subnetted, 1 subnets
> R 150.250.1.0 [120/1] via 150.1.1.254, 00:00:06, Ethernet0/1
> 150.200.0.0/24 is subnetted, 1 subnets
> R 150.200.1.0 [120/1] via 150.1.1.254, 00:00:06, Ethernet0/1
>
>
> BB1#sh ip route rip
> 77.0.0.0/8 is variably subnetted, 20 subnets, 3 masks
> R 77.77.1.0/24 [120/1] via 150.1.1.77, 00:00:01, Ethernet0/0
> R 77.77.3.0/24 [120/1] via 150.1.1.77, 00:00:01, Ethernet0/0
> R 77.77.4.0/24 [120/1] via 150.1.1.77, 00:00:01, Ethernet0/0
> R 77.77.5.0/24 [120/1] via 150.1.1.77, 00:00:01, Ethernet0/0
> R 77.77.6.0/24 [120/1] via 150.1.1.77, 00:00:01, Ethernet0/0
> R 77.77.7.0/24 [120/1] via 150.1.1.77, 00:00:01, Ethernet0/0
> R 77.77.8.0/24 [120/1] via 150.1.1.77, 00:00:01, Ethernet0/0
> R 77.77.9.0/24 [120/1] via 150.1.1.77, 00:00:01, Ethernet0/0
> R 77.77.10.0/24 [120/1] via 150.1.1.77, 00:00:01, Ethernet0/0
> R 77.77.12.0/30 [120/1] via 150.1.1.77, 00:00:01, Ethernet0/0
> R 77.77.17.0/24 [120/1] via 150.1.1.77, 00:00:01, Ethernet0/0
> R 77.77.21.0/30 [120/1] via 150.1.1.77, 00:00:01, Ethernet0/0
> R 77.77.28.0/24 [120/1] via 150.1.1.77, 00:00:01, Ethernet0/0
> R 77.77.33.0/24 [120/1] via 150.1.1.77, 00:00:01, Ethernet0/0
> R 77.77.36.0/24 [120/1] via 150.1.1.77, 00:00:01, Ethernet0/0
> R 77.77.44.0/24 [120/1] via 150.1.1.77, 00:00:01, Ethernet0/0
> R 77.77.48.0/24 [120/1] via 150.1.1.77, 00:00:01, Ethernet0/0
> R 77.77.58.0/24 [120/1] via 150.1.1.77, 00:00:01, Ethernet0/0
> R 77.77.67.0/24 [120/1] via 150.1.1.77, 00:00:01, Ethernet0/0
> R 77.0.0.0/8 [120/1] via 150.1.1.77, 00:00:01, Ethernet0/0
>
>
> *Hong Chan <howard.chan34@gmail.com>* wrote:
>
> I don't see any wrong with your configuration but the config can be
> simpler.
> For me, I won't use prefix list to deny the route but let the statement
> "route-map OSPF->RIP deny 20" to filter the routes.
>
> Pleae provide the show ip route in the rip & full configuration of the
> router to let us to see which router redistribute the ospf route into rip
> domain
>
> 2008/8/12 Huan Pham <Huan.Pham@peopletelecom.com.au>
>
>> I do not see any problem with your config.
>>
>> Please try "clear ip ospf process" on the router that do redistribution,
>> to force the router to refresh routing table, and to apply the
>> route-map.
>>
>> It worked for me in similar cases. Let me know if that works for you.
>>
>> Alternatively, you can you "distribute-list out interface" under the RIP
>> to filter traffic you send to the other RIP neighbor, and the interface
>> command "ip summary-address rip 77.0.0.0 255.0.0.0" to create summary
>> route.
>>
>>
>>
>>
>> -----Original Message-----
>> From: nobody@groupstudy.com [mailto:nobody@groupstudy.com] On Behalf Of
>> Igor Manassypov
>> Sent: Tuesday, 12 August 2008 5:17 AM
>> To: ccielab@groupstudy.com
>> Subject: ospf->rip redistribution filtering with RR
>>
>> Hi Gang,
>>
>> Can someone please help me out with this scenario:
>>
>> - i have an ospf-rip redistribution, where ospf runs over my 77.x.x.x
>> network with a bunch of routes. I am trying to create a summary within
>> ospf, and redistribute only that summary to my rip process on same
>> router by means of a route map like follows:
>>
>> router rip
>> version 2
>> redistribute ospf 77 metric 1 route-map OSPF->RIP passive-interface
>> default network 150.1.0.0 neighbor 150.1.1.254 no auto-summary
>>
>> ip prefix-list SUMMARY seq 5 permit 77.0.0.0/8 ip prefix-list SUMMARY
>> seq 10 deny 0.0.0.0/0 le 32 !
>> route-map OSPF->RIP permit 10
>> match ip address prefix-list SUMMARY
>> route-map OSPF->RIP deny 20
>>
>>
>> After redistribution, within rip I still get the complete routing info
>> coming from ospf. Why would the above RR not stop the more specifics?!
>>
>> Thanks!!
>>
>>
>> Igor M., M.Eng, P.Eng
>> Network Architect
>>
>>
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>>
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>>
>>
>>
>>
>
>
>
> Igor M., M.Eng, P.Eng
> Network Architect
Blogs and organic groups at http://www.ccie.net
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