From: Le Dinh An (anld@ispco.com.vn)
Date: Thu Jan 16 2003 - 00:59:48 GMT-3
Hi,
I remember this problem was discussed some time ago, and there is no way
R6 can think R3S1 is from OSPF. Even if R3S1 falls in a different major
network, which you have to distribute connected network into RIP, R6
still knows about it from RIP.
HTH,
An.
syv wrote:
>Hi,
>
>The layout is simple:
>
>OSPF ---- s1 R3 fa0 ---- RIPv2 --- R6
>
>How to make so that RIP thinks that s1 is in OSPF and not in
>RIP?
>
>If I do a distribute-list in RIP, it will stop the OSPF
>route redistribution into RIP.
>
>R3S1: 131.108.5.3/24
>R3fa0: 131.108.1.3/24
>
>Passive-interface prevents sending routes out of that
>interface, but RIP still considers s1 as RIP since it
>matches the classful network statement.
>
>R6 thinks that R3S1 is sourced by RIP and not by OSPF
>
>R6 Debug IP RIP shows that 131.108.5.0 is from RIP.
>
>Jan 15 14:57:28.798 PST: RIP: build flash update entries
>Jan 15 14:57:28.798 PST: 131.108.1.0/24 via 0.0.0.0, metric 1, tag 0
>Jan 15 14:57:28.798 PST: 131.108.2.0/24 via 131.108.1.6, metric 2, tag 0
>Jan 15 14:57:28.798 PST: 131.108.3.0/24 via 131.108.1.7, metric 2, tag 0
>Jan 15 14:57:28.798 PST: 131.108.4.0/24 via 0.0.0.0, metric 6, tag 0
>Jan 15 14:57:28.802 PST: 131.108.5.0/24 via 0.0.0.0, metric 1, tag 0
>
>
>
>Here is the R3 configuration
>
>interface Serial1
> ip address 131.108.5.3 255.255.255.0
>!
>interface FastEthernet0
> ip address 131.108.1.3 255.255.255.0
>!
>router ospf 10
> router-id 10.254.3.3
> redistribute rip metric-type 1 subnets tag 123
> network 131.108.5.0 0.0.0.255 area 1
> default-metric 121
>!
>router rip
> version 2
> redistribute ospf 10
> passive-interface default
> no passive-interface FastEthernet0
> network 131.108.0.0
> default-metric 6
> no auto-summary
>!
>
>
>Sh ip protocols
>=-=-=-=-=-=-=-=-
>Routing Protocol is "rip"
> Sending updates every 30 seconds, next due in 16 seconds
> Invalid after 180 seconds, hold down 180, flushed after 240
> Outgoing update filter list for all interfaces is not set
> Incoming update filter list for all interfaces is not set
> Default redistribution metric is 6
> Redistributing: rip, ospf 10 (internal, external 1 & 2, nssa-external 1 & 2)
>
> Default version control: send version 2, receive version 2
> Interface Send Recv Triggered RIP Key-chain
> FastEthernet0 2 2
> Automatic network summarization is not in effect
> Maximum path: 4
> Routing for Networks:
> 131.108.0.0
> Passive Interface(s):
> Serial0
> Serial1
> Serial2
> Routing Information Sources:
> Gateway Distance Last Update
> 131.108.1.6 120 00:00:10
> 131.108.1.7 120 00:00:02
> Distance: (default is 120)
>
>
>
>
>
-- Le Dinh An Network Consultant Phone: 84 913 100 478 .
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