From: warren perrett (warrenperrett@xxxxxxxxxxx)
Date: Fri Aug 10 2001 - 13:46:22 GMT-3
Yes the IGRP works just fine , the out going interface is a /24 bit mask
, ALL my interfaces are. I know about the classfull and classless issues
but I am confused why IGRp and RIP are acting differently. :(
Heres some more info
ROUTER redist OSPF to IGRP
I#sh ip route 172.16.0.0
Routing entry for 172.16.0.0/16, 8 known subnets
Attached (1 connections)
Variably subnetted with 2 masks
Redistributing via ospf 1, igrp 1
Advertised by igrp 1
sh ip route 172.16.0.0
O IA 172.16.8.0/24 [110/3358] via 172.16.9.1, 00:00:51, Serial1
C 172.16.9.0/24 is directly connected, Serial1
O 172.16.10.1/32 [110/1563] via 172.16.9.1, 00:00:51, Serial1
O IA 172.16.4.0/24 [110/1582] via 172.16.9.1, 00:00:51, Serial1
O IA 172.16.7.0/24 [110/3357] via 172.16.9.1, 00:00:51, Serial1
O IA 172.16.1.1/32 [110/1573] via 172.16.9.1, 00:00:51, Serial1
O IA 172.16.2.0/24 [110/1572] via 172.16.9.1, 00:00:51, Serial1
O IA 172.16.3.0/24 [110/1572] via 172.16.9.1, 00:00:51, Serial1
debug
IGRP: sending update to 255.255.255.255 via Ethernet0 (172.16.11.1)
subnet 172.16.8.0, metric=10010
subnet 172.16.9.0, metric=158250
subnet 172.16.4.0, metric=10010
subnet 172.16.7.0, metric=10010
subnet 172.16.2.0, metric=10010
subnet 172.16.3.0, metric=10010
config to do this, simple enough really is :
router ospf 1
redistribute igrp 1 metric 1 metric-type 1 subnets
network 172.16.9.2 0.0.0.0 area 2
network 200.200.200.9 0.0.0.0 area 2
!
router igrp 1
redistribute ospf 1 metric 1000 10 255 1 1500
passive-interface Serial1
network 172.16.0.0
This outgoing interface has a /24 bit mask
Ethernet0 172.16.11.1 YES manual up
up
Change this to RIP and it all stops working as below.
A point of note if I redisrtibute from EIGRP the symptoms are the same .
I set out on purpose to make my life easy by having all links and
networks with a 24 bit mask with the idea of getting the nework upo and
pingable and then introducing VLSM and fixing the issues that arose.
Hmmmmmm now I question my sanity.......
I started the day confident I could do redistribution , now I want to
boil my head :(
Thanks for the help...............
>From: "Xu, James" >Reply-To: "Xu, James" >To: "'warren perrett'" ,
ccielab@groupstudy.com >Subject: RE: OSPF to RIP redistribution >Date:
Fri, 10 Aug 2001 12:03:13 -0400 > >The rip v.1 and IGRP are classful
routing protocols. They will check the >outgoing routes against the
network configured in the outgoing interfaces. >The logic is as the
follows: > > If (the outgoing routes is in the different major network
from that >configured in the interface) > summarize the routes to major
network boundary and advertise out. > else (if the outgoing routes have
the same subnet masks) > advertise the routes out > else > drop the
routes. > >A couple of days ago, some post a link to "rip and igrp
routing technical >notes", which should be very helpful. > >However, this
should happens with your advertisement in IGRP too, are you >sure it
works? > >James Xu > >-----Original Message----- >From: warren perrett
[mailto:warrenperrett@hotmail.com] >Sent: Friday, August 10, 2001 10:57
AM >To: ccielab@groupstudy.com >Subject: OSPF to RIP redistribution > >
>Why ? > >If I use OSPF to IGRP then all the subnet info is advertised .
> >Below are the relevant parts of my configs and some debug outputs. >
>Any thoughts ? > > > >Router with leg in OSPF and RIP > >router ospf 1 >
>redistribute rip metric 10 metric-type 1 subnets > >network 10.10.10.3
0.0.0.0 area 0 > >network 192.168.6.1 0.0.0.0 area 3 > >network
200.200.200.3 0.0.0.0 area 3 > >! > >router rip > >redistribute ospf 1
metric 1 > >network 192.168.4.0 > >no auto-summary > >! > >C#sh ip route
172.16.0.0 > >Routing entry for 172.16.0.0/16, 11 known subnets >
>Variably subnetted with 3 masks > >Redistributing via ospf 1, rip >
>Advertised by rip metric 1 > >O IA 172.16.8.0/24 [110/1670] via
10.10.10.4, 00:01:05, Serial0 > >O IA 172.16.9.0/24 [110/3124] via
10.10.10.4, 00:01:05, Serial0 > >O E1 172.16.11.0/24 [110/3125] via
10.10.10.4, 00:01:05, Serial0 > >O IA 172.16.10.1/32 [110/1563] via
10.10.10.4, 00:01:05, Serial0 > >O IA 172.16.4.0/24 [110/1582] via
10.10.10.4, 00:01:05, Serial0 > >O IA 172.16.5.0/24 [110/1669] via
10.10.10.4, 00:01:05, Serial0 > >O IA 172.16.6.0/24 [110/1669] via
10.10.10.4, 00:01:05, Serial0 > >O IA 172.16.1.1/32 [110/1563] via
10.10.10.1, 00:01:05, Serial0 > >O IA 172.16.2.0/24 [110/1572] via
10.10.10.1, 00:01:05, Serial0 > >[110/1572] via 10.10.10.4, 00:01:05,
Serial0 > >O IA 172.16.3.0/24 [110/1572] via 10.10.10.4, 00:01:05,
Serial0 > > > >The routes above are the ones I want to pass out , BUT
look below it wont >do it ! > >DEBUG IP RIP > >RIP: sending v1 update to
255.255.255.255 via Ethernet0 (192.168.4.3) > >network 172.16.0.0, metric
1 >
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