From: Alvarez, Rolando [NCSUS] (RAlvare5@NCSUS.JNJ.COM)
Date: Tue Dec 16 2003 - 20:21:02 GMT-3
Well, yes. That was his original question, why does he have to add the
loopback to the route map in order for R1 to get the route from R3? If he
didn't, you would expect the redistribution between eigrp 2 and eigrp 1 to
take care of the route propagation, but it wasn't. We already knew that
adding the network to the route map would solve the issue, that wasn't the
question.
-----Original Message-----
From: Arvinb@comcast.net [mailto:Arvinb@comcast.net]
Sent: Tuesday, December 16, 2003 5:24 PM
To: Alvarez, Rolando [NCSUS]; Danny.Andaluz@triaton-na.com;
kasturi_cisco@hotmail.com; vdadlaney@comcast.net
Cc: ccielab@groupstudy.com
Subject: Re: Redistribute Connected Issue
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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