Re: Redistribute Connected Issue

From: Arvinb@comcast.net
Date: Tue Dec 16 2003 - 19:23:41 GMT-3


No, if you see danny's mail below. After adding R3's loopback to the ACL for
the route-map on R3 routers, it's being advertised to R1. R1 has both the
route in topo but it prefer vai R2 becuase of better metric.

----- Original Message -----
From: "Alvarez, Rolando [NCSUS]" <RAlvare5@NCSUS.JNJ.COM>
To: <arvindyadav@comcast.net>; <Danny.Andaluz@triaton-na.com>;
<kasturi_cisco@hotmail.com>; <vdadlaney@comcast.net>
Cc: <ccielab@groupstudy.com>
Sent: Tuesday, December 16, 2003 4:10 PM
Subject: RE: Redistribute Connected Issue

> Even if the route was in the topology table of R1 via both R2 and R3
(which
> I think Danny is saying it is not), if you look at the diagram, all things
> left default, you can tell that R3 would be preferred. According to
Danny,
> it is not. That leads me to believe that the topology table only shows
one
> entry, from R2.
>
> -----Original Message-----
> From: arvindyadav@comcast.net [mailto:arvindyadav@comcast.net]
> Sent: Tuesday, December 16, 2003 3:50 PM
> To: Danny.Andaluz@triaton-na.com; kasturi_cisco@hotmail.com;
> vdadlaney@comcast.net
> Cc: ccielab@groupstudy.com
> Subject: Re: Redistribute Connected Issue
>
>
> ohhh I think I missed the ISIS part. now I understand, if you are using
> redis connected on R3 then you have to permit loopback address in
> router-map.
>
> Now if you check eigrp topo in R1 there must be two route. It will prefer
> which one has better metric. To prefer only 10.1..1.0/24 route via R3.
> First check the metric of both the routes on R1 and make the necessary
> changes is bandwidth or delay on R2 to make it less preferred ( redis
eigrp
> 2 metric bw delay ??? ) command so that it get better metric via R3.
>
> If you want all the routes (include ISIS) will prefer via R3 from R1 then
> play the metric on R3.
>
> regds
> Arivnd
>
>
>
>
> ----- Original Message -----
> From: <Danny.Andaluz@triaton-na.com>
> To: <arvindyadav@comcast.net>; <kasturi_cisco@hotmail.com>;
> <vdadlaney@comcast.net>
> Cc: <ccielab@groupstudy.com>
> Sent: Tuesday, December 16, 2003 3:03 PM
> Subject: RE: Redistribute Connected Issue
>
>
> > 1. If on R3 eigrp is enabled on loopback 0, then why do you need to
redis
> > connected. Just make sure you have network statement under eigrp
> >
> > router eigrp 2
> > net 10.0.0.0
> >
> > I have to "redistribute connected" for connected isis interfaces that
> won't
> > be redistributed with "redistribute isis" under both EIGRP AS's.
> >
> > 2. If both the router R2 and R3 redistribute the AS2 to AS1 then R1
will
> > get two route and both will external D EX. R1 will select the better
> metric
> > router.
> > 3 R2 will be getting this router as internal
> >
> > This is what I expected, but not what I saw. R2 did have a D entry for
> this
> > network from R3 across AS 2. R2 was sending this route to R1, but R3
was
> > not. Once I added R3's loopback to the ACL for the route-map for
> > redistributing connected ISIS interfaces into EIGRP 1 and 2, R1 received
> the
> > route from R3 and chose R3 as the best path. It still had R2's path in
> the
> > topology table.
> >
> >
> > 4. If redistribution ( as2 to as1) is happening only of R3 then R1 get
> only
> > one router i.e from R3.
> >
> > Danny
> >
> >
> > -----Original Message-----
> > From: arvindyadav@comcast.net [mailto:arvindyadav@comcast.net]
> > Sent: Tuesday, December 16, 2003 2:44 PM
> > To: kasturi cisco; Andaluz, Danilo, Triaton/NA; vdadlaney@comcast.net
> > Cc: ccielab@groupstudy.com
> > Subject: Re: Redistribute Connected Issue
> >
> >
> > 1. If on R3 eigrp is enabled on loopback 0, then why do you need to
redis
> > connected. Just make sure you have network statement under eigrp
> >
> > router eigrp 2
> > net 10.0.0.0
> >
> > 2. If both the router R2 and R3 redistribute the AS2 to AS1 then R1
will
> > get two route and both will external D EX. R1 will select the better
> metric
> > router.
> >
> > 3 R2 will be getting this router as internal
> >
> > 4. If redistribution ( as2 to as1) is happening only of R3 then R1 get
> only
> > one router i.e from R3.
> >
> > I have simulated and I got two routes in eigrp topo on R1 and it select
> best
> > route via 150.50.124.6 (R3) because of better metric.
> >
> > R1# sh ip ei topo
> > IP-EIGRP Topology Table for process 1
> >
> > Codes: P - Passive, A - Active, U - Update, Q - Query, R - Reply,
> > r - Reply status
> >
> > P 10.1.1.0/24, 1 successors, FD is 409600
> > via 150.50.124.6 (409600/128256), Ethernet0
> > via 150.50.124.5 (412160/156160), Ethernet0
> >
> > R1#sh ip ro
> > 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, * - candidate
> > default
> > U - per-user static route, o - ODR
> >
> > Gateway of last resort is not set
> >
> > 10.0.0.0/24 is subnetted, 1 subnets
> > D EX 10.1.1.0 [170/409600] via 150.50.124.6, 00:01:31, Ethernet0
> >
> >
> > regds
> > Arvind
> >
> > ----- Original Message -----
> > From: "kasturi cisco" <kasturi_cisco@hotmail.com>
> > To: <Danny.Andaluz@triaton-na.com>; <vdadlaney@comcast.net>
> > Cc: <ccielab@groupstudy.com>
> > Sent: Tuesday, December 16, 2003 11:07 AM
> > Subject: RE: Redistribute Connected Issue
> >
> >
> > > Danny,
> > >
> > > I think what possibly is happening is when u have a route-map for
> > > "redi connected" on R3 u are not including the Loopback on R3. so what
> > > happens is the loopback wont go from R3 to R1.Since loopback is in
> > > EIGRP it reaches R2 as (D) and then R1 (D EX) and hence R1 possible
> > > has only 1 route to the loopback via R2.
> > >
> > > Does ur R1 routing table and/or toplogy table show 2 routes for the
> > > loopback. Can u post the configs with route table for all 3.
> > >
> > > HTH.Let us know what u find.
> > >
> > > Good Luck,
> > > Kasturi.
> > >
> > > ----------------------------------------------------------------------
> > > --
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