From: Igor Manassypov (imanassypov@rogers.com)
Date: Tue Aug 12 2008 - 09:07:36 ART
- still same behavior even if i reboot the two routers... Do you have an identical configuration? Nothing within the route-map works that would stop the specific routes from redistribution. The only way I could make it work was with distribute lists under rip process.
Do you think may be rip has no capability to support route-maps in redistribution even though the commands are there?!
Huan Pham <Huan.Pham@peopletelecom.com.au> wrote: Have you tried resetting OSPF process as I mentioned in my previous
email.
I can reproduce your problem and the problem is gone after I reset OSPF
process.
The redistribution from RIP or EIGRP to OSPF is more straight forward,
than the other direction.
OSPF behaves differently than RIP & EIGRP because with OSPF, router does
not get pediodic route updates. The routing table is only refreshed
after you have a change in the topology.
For some reason, I found that if you change the route-map config, the
change only is applied after you clear OSPF process. This is similar to
BGP route-map, you need to clear BGP neighbor (soft), otherwise new
route-map do not get applied.
Cheers,
-----Original Message-----
From: nobody@groupstudy.com [mailto:nobody@groupstudy.com] On Behalf Of
Igor Manassypov
Sent: Tuesday, 12 August 2008 11:45 AM
To: Hong Chan; Huan Pham
Cc: Igor Manassypov; ccielab@groupstudy.com
Subject: Re: ospf->rip redistribution filtering with RR
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 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 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
Blogs and organic groups at http://www.ccie.net
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