01-30-2011 11:26 PM - edited 03-04-2019 11:15 AM
hi ,
i have 7 routers in my wan topology. one router is hub(HQ) and rest of the are spokes(Branches). i configured gre over Ipsec vpn.now
how do i configure them in multiple ospf area so that my HQ router will be area 0 and the branches are like 2, 3, 4 area. i also want that my branch routers dont receive all HQ routes. in this case i have to do stub area but i also read that stub area is only blocking external routes and i dont have any external routes. so what should i do now. thanks in advanceee...
01-31-2011 01:19 AM
Hi,
Just configure it as totally stubby area, as your Spokes will be in different areas, HQ will only advertise the summary default route to spokes.
Yasir
01-31-2011 02:19 AM
Thanks bro one more question is that now the local lan of the hub will be area 0 and the respective branch tunnels(WAN) will be different area.rite..correct me if i am wrong.thanks in advancee..
01-31-2011 02:23 AM
Yes, it will work in this way too.
01-31-2011 08:40 PM
Thanks bro and one more thing is that multiple ospf is working fine.then i configured the spokes as totally-stubby but then i cant ping any other remote branches. any suggestions will be really appriciatable.thanks in advanceeee.
01-31-2011 10:01 PM
Can you share the output of following commands, on HQ and any two spoke.
show ip ospf interface brief
show ip ospf nei
show ip route ospf
02-02-2011 01:59 AM
HUB Router:
HUB-Router#show ip ospf interface brief
Interface PID Area IP Address/Mask Cost State Nbrs F/C
Fa1/0 10 0 192.168.1.1/24 1 DR 0/0
Tu1 10 1 200.200.200.2/30 11111 P2P 1/1
Tu2 10 2 200.200.200.6/30 11111 P2P 1/1
Tu3 10 3 200.200.200.10/30 11111 P2P 1/1
HUB-Router#sh ip ospf nei
Neighbor ID Pri State Dead Time Address Interface
200.200.200.1 0 FULL/ - 00:00:33 200.200.200.1 Tunnel1
200.200.200.5 0 FULL/ - 00:00:36 200.200.200.5 Tunnel2
200.200.200.9 0 FULL/ - 00:00:36 200.200.200.9 Tunnel3
HUB-Router#sh ip route ospf
O 192.168.13.0/24 [110/11112] via 200.200.200.5, 00:07:20, Tunnel2
O 192.168.36.0/24 [110/11112] via 200.200.200.1, 00:07:20, Tunnel1
O 192.168.53.0/24 [110/11112] via 200.200.200.9, 00:07:30, Tunnel3
SPOKE-1
SPOKE-1#show ip ospf interface brief
Interface PID Area IP Address/Mask Cost State Nbrs F/C
Tu0 10 1 200.200.200.1/30 11111 P2P 1/1
Fa1/0 10 1 192.168.36.1/24 1 DR 0/0
SPOKE-1#sh ip ospf neighbor
Neighbor ID Pri State Dead Time Address Interface
200.200.200.10 0 FULL/ - 00:00:29 200.200.200.2 Tunnel0
SPOKE-1#sh ip route ospf
200.200.200.0/30 is subnetted, 3 subnets
O IA 200.200.200.8 [110/22222] via 200.200.200.2, 00:11:44, Tunnel0
O IA 200.200.200.4 [110/22222] via 200.200.200.2, 00:11:44, Tunnel0
O IA 192.168.13.0/24 [110/22223] via 200.200.200.2, 00:11:38, Tunnel0
O IA 192.168.53.0/24 [110/22223] via 200.200.200.2, 00:11:44, Tunnel0
O IA 192.168.1.0/24 [110/11112] via 200.200.200.2, 00:11:44, Tunnel0
SPOKE-2
SPOKE-2#sh ip ospf int br
Interface PID Area IP Address/Mask Cost State Nbrs F/C
Tu0 10 2 200.200.200.5/30 11111 P2P 1/1
Fa1/0 10 2 192.168.13.1/24 1 DR 0/0
SPOKE-2#sh ip ospf nei
Neighbor ID Pri State Dead Time Address Interface
200.200.200.10 0 FULL/ - 00:00:32 200.200.200.6 Tunnel0
SPOKE-2#sh ip route ospf
200.200.200.0/30 is subnetted, 3 subnets
O IA 200.200.200.8 [110/22222] via 200.200.200.6, 00:13:49, Tunnel0
O IA 200.200.200.0 [110/22222] via 200.200.200.6, 00:13:49, Tunnel0
O IA 192.168.36.0/24 [110/22223] via 200.200.200.6, 00:13:44, Tunnel0
O IA 192.168.53.0/24 [110/22223] via 200.200.200.6, 00:13:49, Tunnel0
O IA 192.168.1.0/24 [110/11112] via 200.200.200.6, 00:13:49, Tunnel0
02-02-2011 02:09 AM
Hi,
I think you have not configured it as totally stubby, and from the routing table things seems to be ok.
02-02-2011 09:00 PM
Thanks a lot buddy. now its working finee.thankssss..............
02-02-2011 09:12 PM
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