From: Wollmann, Bruno RQHR (Bruno.Wollmann@rqhealth.ca)
Date: Fri Jan 11 2008 - 18:09:40 ARST
Your last line in the prefix-list is causing you the problem.
Change ip prefix-list rip seq 10 permit 0.0.0.0/32
To ip prefix-list rip seq 10 permit 0.0.0.0/0 le 32
-----Original Message-----
From: nobody@groupstudy.com [mailto:nobody@groupstudy.com] On Behalf Of
vignesh sethuraman
Sent: January 10, 2008 5:04 AM
To: ccielab@groupstudy.com
Subject: RIP filtering using Prefix list
Hello Experts,
I have 2 Routers R4 and R5 connected via framerelay. I created 2
loopbacks in every router. I configured rip and i want the network
14.1.1.0 in R5 to be filtered out while sending out to R4. The issue is
the another network13.1.1.0/24 is also getting filtered out. I used
prefix list for filtering and i configured permit 0.0.0.0/32 along with
the deny 14.1.1.0/24. Here is my config
R4:
interface Loopback0
ip address 10.1.1.1 255.255.255.0
interface Loopback1
ip address 11.1.1.1 255.255.255.0
interface Serial1/0
ip address 12.1.1.1 255.255.255.0
encapsulation frame-relay
frame-relay map ip 12.1.1.2 405 broadcast
router rip
version 2
network 10.0.0.0
network 11.0.0.0
network 12.0.0.0
no auto-summary
R5:
interface Loopback0
ip address 13.1.1.1 255.255.255.0
interface Loopback1
ip address 14.1.1.1 255.255.255.0
interface Serial1/1
ip address 12.1.1.2 255.255.255.0
encapsulation frame-relay
frame-relay map ip 12.1.1.1 504 broadcast
router rip
version 2
network 12.0.0.0
network 13.0.0.0
network 14.0.0.0
distribute-list prefix rip out
no auto-summary
ip prefix-list rip seq 5 deny 14.1.1.0/24 ip prefix-list rip seq 10
permit 0.0.0.0/32
Here is my routing table o/p
R4:
Rack1R4#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
10.0.0.0/24 is subnetted, 1 subnets
C 10.1.1.0 is directly connected, Loopback0
11.0.0.0/24 is subnetted, 1 subnets
C 11.1.1.0 is directly connected, Loopback1
12.0.0.0/24 is subnetted, 1 subnets
C 12.1.1.0 is directly connected, Serial1/0
R5:
Rack1R5(config)#do 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
10.0.0.0/24 is subnetted, 1 subnets
R 10.1.1.0 [120/1] via 12.1.1.1, 00:00:09, Serial1/1
11.0.0.0/24 is subnetted, 1 subnets
R 11.1.1.0 [120/1] via 12.1.1.1, 00:00:09, Serial1/1
12.0.0.0/24 is subnetted, 1 subnets
C 12.1.1.0 is directly connected, Serial1/1
13.0.0.0/24 is subnetted, 1 subnets
C 13.1.1.0 is directly connected, Loopback0
14.0.0.0/24 is subnetted, 1 subnets
C 14.1.1.0 is directly connected, Loopback1
Could you please kindly help me
Thanks,
Vignesh
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