What version of code are you running on what hw?

-max

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On May 5, 2012, at 12:40 AM, Fulvio allegretti <[email protected]> wrote:

> 
> 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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