From: Xu, James (james.xu@xxxxxxx)
Date: Fri Aug 10 2001 - 13:03:13 GMT-3
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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