From: John Matijevic (matijevi@bellsouth.net)
Date: Fri Jun 20 2003 - 20:46:05 GMT-3
Hello Jason,
I had a similar problem last week, what you need to do is use ip ospf
summary-address on R2, with /24 subnet that RIP recognizes, becuase RIP is a
classful protocol it only understands classful masks /24 /26 /8 etc. OSPF is
a classless protocol that lets you extend the subnet mask beyond a classfull
boundry. So in order for rip to get to that network, you going to have to
summarize on the ospf ASBR. Then you will be able to reach it. By theory it
should not even be in your routing table or r4, maybe left over config :
shrug :
Sincerely,
Matijevic
----- Original Message -----
From: "Jason Cash" <cash2001@swbell.net>
To: <ccielab@groupstudy.com>
Sent: Friday, June 20, 2003 7:18 PM
Subject: Rip v1 installing /32 routes.
> I have a question regarding the behavior of RIP v1 and classless routes.
I
> have a router (r4) that is running RipV1, neighbored with R2, also running
> RipV1 but OSPF and BGP as well. My problem is that, for some reason., R4
is
> installing /32 routes in it's route table. These routes are part of R2's
> multipoint interface (s0.100). The problem that I am facing is that R4 is
> able to ping 172.30.100.5 and .6, but not .2 which is r2's interface. How
> can I propagate the 172.30.100.2/32 route into RIP and why is this even
> happening?
>
>
>
> r4#si rip
>
> R 192.168.9.0/24 [120/3] via 172.30.24.2, 02:24:04, Serial0/0.24
>
> 172.30.0.0/16 is variably subnetted, 10 subnets, 2 masks
>
> R 172.30.200.0/24 [120/3] via 172.30.24.2, 02:24:04, Serial0/0.24
>
> R 172.30.25.0/24 [120/1] via 172.30.24.2, 02:24:18, Serial0/0.24
>
> R 172.30.12.0/24 [120/3] via 172.30.24.2, 02:24:18, Serial0/0.24
>
> R 172.30.100.6/32 [120/3] via 172.30.24.2, 02:23:52, Serial0/0.24
>
> R 172.30.100.5/32 [120/3] via 172.30.24.2, 02:24:04, Serial0/0.24
>
>
>
> hostname r4
>
> !
>
> interface Loopback0
>
> ip address 192.168.4.4 255.255.255.255
>
> !
>
> interface FastEthernet0/0
>
> ip address 172.30.40.4 255.255.255.0
>
> no keepalive
>
> speed 100
>
> full-duplex
>
> !
>
> interface Serial0/0
>
> no ip address
>
> encapsulation frame-relay
>
> no frame-relay inverse-arp
>
> !
>
> interface Serial0/0.24 point-to-point
>
> ip address 172.30.24.4 255.255.255.0
>
> ip rip triggered
>
> frame-relay interface-dlci 401
>
> !
>
> router rip
>
> timers basic 30 180 0 240
>
> passive-interface FastEthernet0/0
>
> passive-interface Loopback0
>
> offset-list 0 out 4
>
> network 172.30.0.0
>
> network 192.168.4.0
>
>
>
>
>
> r4#ping 172.30.100.5
>
>
>
> Type escape sequence to abort.
>
> Sending 5, 100-byte ICMP Echos to 172.30.100.5, timeout is 2 seconds:
>
> !!!!!
>
> Success rate is 100 percent (5/5), round-trip min/avg/max = 60/63/68 ms
>
> r4#ping 172.30.100.6
>
>
>
> Type escape sequence to abort.
>
> Sending 5, 100-byte ICMP Echos to 172.30.100.6, timeout is 2 seconds:
>
> !!!!!
>
> Success rate is 100 percent (5/5), round-trip min/avg/max = 60/60/60 ms
>
> r4#ping 172.30.100.2
>
>
>
> Type escape sequence to abort.
>
> Sending 5, 100-byte ICMP Echos to 172.30.100.2, timeout is 2 seconds:
>
> ..
>
>
>
>
>
> R2
>
> hostname r2
>
> !
>
> interface Loopback0
>
> ip address 192.168.2.2 255.255.255.255
>
> !
>
> interface Ethernet0
>
> description to R1 E0 (crossover)
>
> ip address 172.30.12.2 255.255.255.192
>
> !
>
> interface Serial0
>
> no ip address
>
> encapsulation frame-relay
>
> no fair-queue
>
> no frame-relay inverse-arp
>
> !
>
> interface Serial0.24 point-to-point
>
> ip address 172.30.24.2 255.255.255.0
>
> ip rip triggered
>
> frame-relay interface-dlci 104
>
> !
>
> interface Serial0.100 multipoint
>
> ip address 172.30.100.2 255.255.255.248
>
> ip ospf network point-to-multipoint
>
> ip ospf hello-interval 10
>
> ip ospf transmit-delay 2
>
> frame-relay map ip 172.30.100.2 105
>
> frame-relay map ip 172.30.100.5 105 broadcast
>
> frame-relay map ip 172.30.100.6 106 broadcast
>
> !
>
> router ospf 1
>
> router-id 192.168.2.2
>
> log-adjacency-changes
>
> timers spf 6 12
>
> summary-address 172.30.12.0 255.255.255.0
>
> redistribute connected subnets route-map ospfconn
>
> redistribute rip subnets route-map rip2ospf
>
> network 172.30.100.0 0.0.0.7 area 0
>
> network 192.168.2.2 0.0.0.0 area 1
>
> !
>
> router rip
>
> timers basic 30 180 0 240
>
> redistribute connected metric 3
>
> redistribute ospf 1 metric 3
>
> passive-interface BRI0
>
> passive-interface Ethernet0
>
> passive-interface Loopback0
>
> passive-interface Serial0.100
>
> network 172.30.0.0
>
> distance 109
>
>
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This archive was generated by hypermail 2.1.4 : Fri Jul 04 2003 - 11:11:04 GMT-3