From: Dustin.Yates@xxxxxxxxxxxx
Date: Mon Jun 03 2002 - 22:41:21 GMT-3
Paul, I sent this one the other day, but maybe you didn't see it:
deny 200.200.0.0 0.0.254.0
perm any
Now, here's the distribute list in action:
r4:
router rip
version 2
network 155.10.0.0
network 200.200.0.0
network 200.200.1.0
network 200.200.2.0
network 200.200.3.0
network 200.200.4.0
network 200.200.5.0
R4#siib
Interface IP-Address OK? Method Status
Prot
ocol
FastEthernet0/0 155.10.44.4 YES NVRAM up
up
Serial0/0 155.10.45.4 YES NVRAM up
up
Loopback0 155.10.4.4 YES NVRAM up
up
Loopback1 200.200.1.1 YES manual up
up
Loopback2 200.200.2.1 YES manual up
up
Loopback3 200.200.3.1 YES manual up
up
Loopback4 200.200.4.1 YES manual up
up
Loopback5 200.200.5.1 YES manual up
up
R5#sir
Codes: C - connected, S - static, I - IGRP, 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, E - EGP
i - IS-IS, 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
R 200.200.4.0/24 [120/1] via 155.10.45.4, 00:00:22, Serial0/0.45
R 200.200.5.0/24 [120/1] via 155.10.45.4, 00:00:22, Serial0/0.45
155.10.0.0/16 is variably subnetted, 16 subnets, 3 masks
R 155.10.4.0/24 [120/1] via 155.10.45.4, 00:00:12, Serial0/0.45
R 155.10.44.0/24 [120/1] via 155.10.45.4, 00:00:13, Serial0/0.45
R 200.200.1.0/24 [120/1] via 155.10.45.4, 00:00:25, Serial0/0.45
R 200.200.2.0/24 [120/1] via 155.10.45.4, 00:00:25, Serial0/0.45
R 200.200.3.0/24 [120/1] via 155.10.45.4, 00:00:25, Serial0/0.45
R5#conf t
Enter configuration commands, one per line. End with CNTL/Z.
R5(config)#access-list 77 deny 200.200.0.0 0.0.254.0
R5(config)#access-list 77 perm any
R5(config)#router rip
R5(config-router)#distr
R5(config-router)#distribute-list 77 in s0/0.45
R5(config-router)#end
R5#clear ip route
04:20:36: %SYS-5-CONFIG_I: Configured from console by console
R5#clear ip route *
R5#sir
Codes: C - connected, S - static, I - IGRP, 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, E - EGP
i - IS-IS, 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
R 200.200.5.0/24 [120/1] via 155.10.45.4, 00:00:11, Serial0/0.45
155.10.0.0/16 is variably subnetted, 16 subnets, 3 masks
R 155.10.4.0/24 [120/1] via 155.10.45.4, 00:00:12, Serial0/0.45
R 155.10.44.0/24 [120/1] via 155.10.45.4, 00:00:13, Serial0/0.45
R 200.200.1.0/24 [120/1] via 155.10.45.4, 00:00:13, Serial0/0.45
R 200.200.3.0/24 [120/1] via 155.10.45.4, 00:00:13, Serial0/0.45
R5#
-----Original Message-----
From: Paul [mailto:p_chopin@yahoo.com]
Sent: Monday, June 03, 2002 5:44 PM
To: ccielab@groupstudy.com
Subject: Route filtering
Hi guys,
I'm reposting the question from couple days.I think it
is worth looking at it again.Nobody so far was able to
come up with any solid answer.
What I'm trying to do is to prevent rip from learning
certain prefixes over the interface.I only should
allow
networks 200.200.x.0/24 where x is odd number.So guys
pay attention, we filtering on networks and prefix
size.
I use distribute-list statement under rip. Ip prefix
list doesn't seem to work in this case.
Extended access list block all the networks.?When I
use standard access lists it works, but I'm getting
all sorts of prefixes, not just /24.
Any ideas
Thanks.
This archive was generated by hypermail 2.1.4 : Tue Jul 02 2002 - 08:12:23 GMT-3