[nsp] OSPF Problems with Extreme Switches and Cisco Routers .

[Todd, Douglas M.]

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Daniel:

Make sure that your timers are the same on both sides (dead/hello).
In addition make sure that extreme is taking the lan as a broadcast
and not a non-broadcast or ptp.

You can do a debug ip os packet on the cisco to help w/finding what
is causing the timers to  expire.

==DMT>

> -----Original Message-----
> From: Daniel Concepcion [mailto:dani at danielcp.net]
> Sent: Tuesday, January 21, 2003 6:22 AM
> To: cisco-nsp at puck.nether.net
> Subject: [nsp] OSPF Problems with Extreme Switches and Cisco
> Routers.   
> 
> 
> Hi People, 
> 
> I have the following problem:
> When I connect two cisco routers to the Extreme switch and 
> use dot1q vlan for 
> interconnect the two routers.  The OSPF adjacency in the 
> cisco routers change 
>  every few minutes. 
> 
> A router: Loading to Full
> B Router: Neighbor Down: Dead timer expired
> 
> 
> I have cfg the vlan with the IP protocol and the ports are 
> also in use in 
> other vlan as untag without any problem and with the extreme 
> talking ospf 
> with the cisco routers without issues.
> 
> Do you know if i need cfg the vlan in the extreme with any special
> ? Is out there any know issue with this configuration, I don't 
> find anything :( 
> If we use cisco switches and dot1q i don't have any problem.
> 
> 
> We use cisco 12.0.23S over 7507 and 7206. ( we get the same 
> problem with other 
> IOS version)
> And  Extremeware Version 6.1.5 (Build 20) over Summit48i
> 
> 
> 
> Regards,
> Daniel
> 
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