From: Chen Kwong Wai William (kwchen@netvigator.com)
Date: Wed Aug 20 2003 - 12:45:37 GMT-3
Dear all,
I've the following test case:
R4 - R1 - R5
R4's Loopback and the serial link between R4 and R1 running ISIS,
R5's Loopback and the serial link between R1 and R5 running OSPF,
R1 is doing the mutual redisttribtion between OSPF and ISIS:
Then, it is the network between R4 and R1 does not redistribute into
OSPF, but the network between R1 and R5 does redistribution into ISIS. Is it
the ISIS's behaviour of not redistribute the connect network even the link
is running ISIS. However, OSPF does. What is the different between OSPF and
ISIS. Am I wrong in some configurations?
Best Regards,
William
R4:
interface Loopback1
ip address 4.4.4.4 255.255.255.0
ip router isis
!
interface Serial4
ip address 172.16.1.2 255.255.255.0
ip router isis
clockrate 64000
!
router isis
net 49.0001.0000.0000.0004.00
!
R1:
interface Loopback0
ip address 1.1.1.1 255.255.255.0
!
interface Serial0.1 point-to-point
ip address 192.168.1.1 255.255.255.0
frame-relay interface-dlci 105
!
interface Serial1
ip address 172.16.1.1 255.255.255.0
ip router isis
!
router ospf 1
log-adjacency-changes
redistribute isis metric 15 subnets
network 192.168.1.1 0.0.0.0 area 0
!
router isis
redistribute ospf 1
net 49.0001.0000.0000.0001.00
!
R5:
interface Loopback0
ip address 5.5.5.5 255.255.255.0
!
interface Serial1.1 point-to-point
ip address 192.168.1.5 255.255.255.0
frame-relay interface-dlci 501
!
router ospf 1
log-adjacency-changes
network 5.5.5.5 0.0.0.0 area 0
network 192.168.1.5 0.0.0.0 area 0
!
Now the routing table:
R4:
R4#r
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
4.0.0.0/24 is subnetted, 1 subnets
C 4.4.4.0 is directly connected, Loopback1
5.0.0.0/32 is subnetted, 1 subnets
i L2 5.5.5.5 [115/10] via 172.16.1.1, Serial4
172.16.0.0/24 is subnetted, 1 subnets
C 172.16.1.0 is directly connected, Serial4
i L2 192.168.1.0/24 [115/10] via 172.16.1.1, Serial4
R1#r
R1#r
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
1.0.0.0/24 is subnetted, 1 subnets
C 1.1.1.0 is directly connected, Loopback0
4.0.0.0/24 is subnetted, 1 subnets
i L1 4.4.4.0 [115/20] via 172.16.1.2, Serial1
5.0.0.0/32 is subnetted, 1 subnets
O 5.5.5.5 [110/65] via 192.168.1.5, 00:16:48, Serial0.1
172.16.0.0/24 is subnetted, 1 subnets
C 172.16.1.0 is directly connected, Serial1
C 192.168.1.0/24 is directly connected, Serial0.1
R5:
R5#r
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
4.0.0.0/24 is subnetted, 1 subnets
O E2 4.4.4.0 [110/15] via 192.168.1.1, 00:17:26, Serial1.1
5.0.0.0/24 is subnetted, 1 subnets
C 5.5.5.0 is directly connected, Loopback0
C 192.168.1.0/24 is directly connected, Serial1.1
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