HI guys,
I bumped into this before, and againg tonight, just spent a good 30 minutes on
it.
Framre-realy set full meshed. Using ipxpert topology. Set up OSPF -
restrictions do change ospf network type or in other words used neighbor
command, R2 is the DR - R4 Bdr, look at this on R5:
R5(config)#do show run | sec ospf
router ospf 1
log-adjacency-changes
area 0 authentication message-digest
network 192.168.10.5 0.0.0.0 area 0
network 192.168.25.5 0.0.0.0 area 0
network 200.0.0.5 0.0.0.0 area 0
neighbor 192.168.10.2 priority 150
neighbor 192.168.10.4 priority 100
R5(config)#int se 0/0/0
R5(config-if)#ip ospf prio 0
R5(config-if)#do show run | sec ospf
router ospf 1
log-adjacency-changes
area 0 authentication message-digest
network 192.168.10.5 0.0.0.0 area 0
network 192.168.25.5 0.0.0.0 area 0
network 200.0.0.5 0.0.0.0 area 0
R5(config-if)#ip ospf prio 1
R5(config-if)#do show run | sec ospf
router ospf 1
log-adjacency-changes
area 0 authentication message-digest
network 192.168.10.5 0.0.0.0 area 0
network 192.168.25.5 0.0.0.0 area 0
network 200.0.0.5 0.0.0.0 area 0
neighbor 192.168.10.2 priority 150
neighbor 192.168.10.4 priority 100
R5(config-if)#
It's magic, set the priority of the interface to 0 and the neighbor commands
vanishes from the config. Has anybody else seen this before?
The thing is that the neighbor command seems to be active even when it doesn't
show. If you type neigh 192.168.10.6 (that would be R6, the other router in
this fully meshed set up which also has priority 0) you'll see the log messages
on the console of R6. do show run on R5 no neighbor command to be seen (did not
use any substance tonight, i swear). This could be at least annoying, not sure
if it dangerous yet.
On a back to back frame-realy set up I don't get the same behaviour.
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