I think that MentorLabs has a V-lab that covers this exact thing... It's
been a while since I was out there, but I seem to remember doing this
conversion on their system once or twice...
Dale
[=`)
>From: "Chuck Larrieu" <[EMAIL PROTECTED]>
>Reply-To: "Chuck Larrieu" <[EMAIL PROTECTED]>
>To: "Jim Dixon" <[EMAIL PROTECTED]>, <[EMAIL PROTECTED]>
>Subject: RE: Converting RIP to EIGRP (Online)
>Date: Mon, 25 Sep 2000 22:08:47 -0700
>
>Jim, I'm going to bring this one back public, if you don't mind. I think
>there are some points worth studying.
>
>I did a quick lab to test a couple of things. I'm going to have to ask
>everyone to trust me that all things are configured correctly. I don't want
>to spend all night copying configs and writing books.
>
>First of all, I can find no evidence of EIGRP automatically redistributing
>anything but IGRP, and that only if the IGRP process has the same process
>number as does the EIGRP process. This is in line with my recollection of
>my
>reading and studying. For all protocols other than EIGRP/IGRP, one must
>manually redistribute.
>
>Secondly, I think you can migrate to EIGRP from your RIP environment with
>little worry. Check out the following:
>
>1) I set up a RIP network on three routers. Here is the routing table:
>
>Router#sh ip route
>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 192.168.8.0/24 [120/2] via 192.168.254.5, 00:00:03, Serial1
>R 192.168.9.0/24 [120/2] via 192.168.254.5, 00:00:03, Serial1
>R 192.168.10.0/24 [120/2] via 192.168.254.5, 00:00:03, Serial1
>R 192.168.11.0/24 [120/2] via 192.168.254.5, 00:00:03, Serial1
>R 192.168.4.0/24 [120/1] via 192.168.254.5, 00:00:03, Serial1
>R 192.168.5.0/24 [120/1] via 192.168.254.5, 00:00:03, Serial1
>R 192.168.6.0/24 [120/1] via 192.168.254.5, 00:00:03, Serial1
>R 192.168.7.0/24 [120/1] via 192.168.254.5, 00:00:04, Serial1
>C 192.168.0.0/24 is directly connected, Loopback0
> 192.168.254.0/30 is subnetted, 2 subnets
>C 192.168.254.4 is directly connected, Serial1
>R 192.168.254.0 [120/1] via 192.168.254.5, 00:00:04, Serial1
>C 192.168.1.0/24 is directly connected, Loopback1
> C 192.168.2.0/24 is directly connected, Loopback2
>C 192.168.3.0/24 is directly connected, Loopback3
>Router#
>
>Notice that all routes are RIP ( except for the directly connected )
>
>2) I then configured EIGRP n all the routers. Here is the routing table:
>
>Router#sh ip route
>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
>
>D 192.168.8.0/24 [90/2809856] via 192.168.254.5, 00:00:55, Serial1
>D 192.168.9.0/24 [90/2809856] via 192.168.254.5, 00:00:55, Serial1
>D 192.168.10.0/24 [90/2809856] via 192.168.254.5, 00:00:55, Serial1
>D 192.168.11.0/24 [90/2809856] via 192.168.254.5, 00:00:55, Serial1
>D 192.168.4.0/24 [90/2297856] via 192.168.254.5, 00:00:56, Serial1
>D 192.168.5.0/24 [90/2297856] via 192.168.254.5, 00:00:56, Serial1
>D 192.168.6.0/24 [90/2297856] via 192.168.254.5, 00:00:56, Serial1
>D 192.168.7.0/24 [90/2297856] via 192.168.254.5, 00:00:57, Serial1
>C 192.168.0.0/24 is directly connected, Loopback0
> 192.168.254.0/24 is variably subnetted, 3 subnets, 2 masks
>C 192.168.254.4/30 is directly connected, Serial1
>D 192.168.254.0/24 is a summary, 00:00:59, Null0
>D 192.168.254.0/30 [90/2681856] via 192.168.254.5, 00:00:57, Serial1
>C 192.168.1.0/24 is directly connected, Loopback1
>C 192.168.2.0/24 is directly connected, Loopback2
>C 192.168.3.0/24 is directly connected, Loopback3
>Router#
>
>Notice that all RIP routes have been replaced by EIGRP routes. Why? Because
>EIGRP routes have a lower administrative distance than do RIP routes, and
>therefore they are preferred, and therefore they are placed into the
>routing
>table, overwriting the previous RIP routes.
>
>I will not be so bold as to suggest that it is impossible for loops or
>other
>problems to occur during the migration you propose. But I am suggesting
>that
>with a bit of thought and planning, all things being equal, you should not
>suffer major problems.
>
>I believe that if you were to add the EIGRP process into the distant end
>routers, install the appropriate network statements, then install the EIGRP
>process onto your local routers, you will see fast convergence and a stable
>network. If you have few enough routers, you can probably do this in a
>couple of hours.
>
>Caveats? Static routes. Redistributions that you are currently doing with
>RIP. Typo's. Be sure to document everything. Write your scripts, proofread
>them carefully, and follow them religiously.
>
>HTH
>
>Chuck
>
>-----Original Message-----
>From: [EMAIL PROTECTED] [mailto:[EMAIL PROTECTED]] On Behalf Of Jim
>Dixon
>Sent: Monday, September 25, 2000 8:10 AM
>To: [EMAIL PROTECTED]
>Subject: Converting RIP to EIGRP (Online)
>
>I am looking for information on taking a RIP, Static Route, BGP
>backbone, to EIGRP instead of Rip between access nodes All Routers are
>Cisco, some 1601, 3640, 3620, 2610, 7507
>I am concerned that when I turn EIGRP on, that it will auto redistribute
>the RIP, probably causing a loop or two. Since this is a production net
>with about 10 access nodes and 5 backbone nodes I cannot afford to be
>down while I troubleshoot each loop.
> (R1) ----- (Core 7507)
> (R2) ----- (Core 7507)
> (R3) ----- (Core1 3640) ----- (Core 7507)
> (R4) ----- (Core1 3640) ----- (Core 7507)
>All run RIP v2 and/or Static routes with passive interfaces on some of
>client side routers.
>
>I have looked at Cisco's website and other sites on the internet as well
>as my books.
>I am still not finding the "HOW to change routing protocols RIP to EIGRP
>while avoiding problems" list of steps. Although I didn't find what I
>was looking for I did find many pages on EIGRP on syntax, protocol
>specifics, etc... which have not answered my questions yet.
>
>If any of you on the list have done this before and have some references
>that you could send to me I would really appreciate it.
>
>
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