From: Ken.Farrington@barclayscapital.com
Date: Mon Oct 06 2003 - 12:45:07 GMT-3
Hi guys,
Just incase I get asked to setup ospf over an NBMA network and I have to use
the "non-broadcast" network type over a hub and spoke topology
say i have
rtr 1
/ \
/ \
rtr2 rtr3
Do I just need the neighbor command on the hub, and if so, to set the hub as
always the DR - I just set the ip ospf priority on the interface on rtr1 to
255.
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THIS IS THE WAY I FEEL IS THE CLEANEST WAY BUT WHAT IS THE CISCO WAY?
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So in essence, if I was to get asked to perform this, all I would plan to do
is the following
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on HUB
!
router ospf 1
log-adjacency-changes
network 142.220.19.0 0.0.0.31 area 0
neighbor 142.220.19.2
neighbor 142.220.19.3
!
int s0/0.2
ip ospf net non-broad
ip ospf pri 255
R2#sh ip ospf nei
Neighbor ID Pri State Dead Time Address Interface
222.0.0.2 0 FULL/DROTHER 00:01:37 142.220.19.2
Serial0/0.2
222.0.0.3 0 FULL/DROTHER 00:01:59 142.220.19.3
Serial0/0.2
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on R2
int s0/0
ip ospf net non-broad
ip ospf pri 0
R2#sh ip ospf nei
Neighbor ID Pri State Dead Time Address Interface
222.0.0.1 255 FULL/DR 00:01:55 142.220.19.1 Serial0/0
R2#
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on R3
int s0/0
ip ospf net non-broad
ip ospf pri 0
R3#sh ip ospf nei
Neighbor ID Pri State Dead Time Address Interface
222.0.0.1 255 FULL/DR 00:01:55 142.220.19.1 Serial0/0
R3#
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