From: Paul (p_chopin@xxxxxxxxx)
Date: Tue Jun 04 2002 - 02:13:16 GMT-3
You only have one router to play with. This stuff is
coming from backbone.
--- Dustin.Yates@ercgroup.com wrote:
> The original ACL on the outgoing interface of R4
> stops the evens, but lets
> the prefixes that are longer than 24 through. The
> prefix list on the other
> side stops those. I've got 200.200.10.1/27,
> 200.200.9.1/25, &
> 200.200.11.1/30 defined on R4 now, but they aren't
> showing up in R5's route
> table.
>
> -----Original Message-----
> From: Paul [mailto:p_chopin@yahoo.com]
> Sent: Monday, June 03, 2002 10:57 PM
> To: Dustin.Yates@ercgroup.com
> Cc: ccielab@groupstudy.com
> Subject: RE: Route filtering
>
>
> What about 3rd octate?Now you letting odd and even
> numbers in, don't you.?I don't have lab access at
> the
> moment, but I think that's what gonna happened
> --- Dustin.Yates@ercgroup.com wrote:
> > LOL... I was hoping you were going to say you
> > weren't using ver 2 and that
> > this would work... Let's try this:
> >
> > Using my previous example and presuming the
> correct
> > level of code, place the
> > distribute list using the same access-list 77 on
> the
> > outgoing interface on
> > R4. Now, create a prefix list:
> >
> > ip prefix-list RIPFilter seq 5 deny 200.0.0.0/8 ge
> > 25
> > ip prefix-list RIPFilter seq 10 permit 0.0.0.0/0
> le
> > 32
> >
> > Apply this prefix-list in the incoming
> > distribute-list on R5.
> >
> > I did and it looks ok... Not going to say it's
> > bullet-proof, but I think it
> > works.
> >
> > -----Original Message-----
> > From: Paul [mailto:p_chopin@yahoo.com]
> > Sent: Monday, June 03, 2002 9:29 PM
> > To: Dustin.Yates@ercgroup.com
> > Cc: ccielab@groupstudy.com
> > Subject: RE: Route filtering
> >
> >
> > I doesn't solve the problem. Configure
> > 200.200.9.0/29
> > on loopback and then filter. You will see that you
> > geting mask different then 24. The 3rd octate will
> > be
> > fine but mask will be wrong. I want only /24 of
> > 200.200.x.0.
> > Try
> > --- Dustin.Yates@ercgroup.com wrote:
> > > 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,
>
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