From: Simon Baxter (Simon.Baxter@xxxxxxxxxxxxxx)
Date: Sun Jul 30 2000 - 05:56:42 GMT-3
Hello.
Can someone please tell me the rules with generating default information in
OSPF and which routes to mark as candidate defaults.
1) I only seem to be able to select a route which has an associated default
static route to that network, but the documentation states a non-default
network can be selected with the 'ip default-network' command. I've tried
it with OSPF learned routes which will appear in the route table (as below)
but won't pass on the default information to other OSPF routers.
2) Does the default-information originate have to be on an ABR?
RTRD#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 194.1.1.2 to network 193.1.1.0
1.0.0.0/32 is subnetted, 1 subnets
O 1.1.1.1 [110/65] via 194.1.1.2, 00:44:06, Serial1
2.0.0.0/32 is subnetted, 1 subnets
O 2.2.2.2 [110/65] via 195.1.1.2, 00:58:50, Serial0
3.0.0.0/32 is subnetted, 1 subnets
O 3.3.3.3 [110/65] via 195.1.1.2, 00:58:50, Serial0
O N2 172.16.0.0/16 [110/50] via 194.1.1.2, 00:44:06, Serial1
O N2 172.18.0.0/16 [110/50] via 194.1.1.2, 00:44:06, Serial1
O* 193.1.1.0/24 [110/128] via 194.1.1.2, 00:44:06, Serial1
O N2 192.1.1.0/24 [110/10] via 194.1.1.2, 00:40:06, Serial1
C 195.1.1.0/24 is directly connected, Serial0
C 194.1.1.0/24 is directly connected, Serial1
RTRD#
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