From: John Conzone (jkconzone@xxxxxxxx)
Date: Sat Sep 02 2000 - 12:19:47 GMT-3
I am working on Lab 8, and am having a problem getting OSPF VLSM
routes into IGRP. Router 5 has 2 subs, one a OSPF multipoint link
addressed 137.20.100.34/27. The other sub is a IGRP interface
addressed 137.20.200.18/28 connected to 137.20.200.17/28 (router R4
running IGRP).
When I debug IGRP on R5 to see what he's sending to R4, he's only
sending the 200.200.200.0/24 and 200.200.100.0/24 routes. In other
words only the classful routes. The other routes to the 137.20.x.x
VLSM class B routes don't get sent.
So if the network on the link is 137.20.x.x with a 28 bit mask, no
routes for 137.20.x.x without a 28 bit mask will be sent, right?
Am I missing something? I've been doing all the oddball stuff for
a month and I'm boning back up on FLSM to VLSM redistribution. Anyway,
is there anyway to get R4 out to the other 137.20.x.x nets that don't
have a 28 bit mask without doing the deafult network thing? Here's a
copy of the debug from R5 as he send an IGRP update to R4:
IGRP: sending update to 255.255.255.255 via Serial0.2 (137.20.200.17)
network 200.200.100.0, metric=5001
network 200.200.200.0, metric=5001
IGRP: Update contains 0 interior, 2 system, and 0 exterior routes.
Route tables from R5 and R4 are below.
Thanks for any help you guys can offer.
John
Routes form r5:
r5#sho 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, * -
candidate default
U - per-user static route, o - ODR
Gateway of last resort is not set
200.200.100.0/32 is subnetted, 1 subnets
O 200.200.100.1 [110/65] via 137.20.100.33, 00:14:25, Serial0.1
137.20.0.0/16 is variably subnetted, 9 subnets, 5 masks
C 137.20.200.16/28 is directly connected, Serial0.2
C 137.20.25.0/24 is directly connected, Serial1
O IA 137.20.20.0/24 [110/74] via 137.20.100.33, 00:14:25, Serial0.1
I 137.20.40.16/28 [100/8486] via 137.20.200.18, 00:00:46,
Serial0.2
O 137.20.100.33/32 [110/64] via 137.20.100.33, 00:14:25,
Serial0.1
C 137.20.100.32/27 is directly connected, Serial0.1
O 137.20.100.35/32 [110/64] via 137.20.100.35, 00:14:25,
Serial0.1
C 137.20.64.0/20 is directly connected, Ethernet0
O 137.20.100.0/24 is a summary, 00:14:20, Null0
200.200.200.0/32 is subnetted, 1 subnets
O 200.200.200.1 [110/65] via 137.20.25.1, 00:14:26, Serial1
Routes from R4:
r4#sho 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
I 200.200.200.0/24 [100/8477] via 137.20.200.17, 00:00:34, Serial1
137.20.0.0/28 is subnetted, 2 subnets
C 137.20.200.16 is directly connected, Serial1
C 137.20.40.16 is directly connected, FastEthernet0
I 200.200.100.0/24 [100/8477] via 137.20.200.17, 00
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