[c-nsp] Routing design question

[Bruce Pinsky]

Gert Doering wrote:
> Hi,
> 
> On Wed, Sep 26, 2007 at 11:34:40PM -0400, Jason Ford wrote:
>> Approach 2:
>>
>> 1. put /30 subnets on each link between each 6503 (both at site A and B) 
>> and run a routing protocol like eigrp.
>>
>> We have a handful of static routes (less than 40) that range from /25 to 
>> /30's connected to each 6503.
> 
> That's what I'd do.  Add UDLD to detect a one-way fiber connection.
> 
> The routing protocol will also make sure that you really have end-to-end 
> connectivity, and not just a link.
> 

Well, if it's truly gigE, then auto-negotiation will be more responsive 
to failures than UDLD.  If supported in his version, BFD would also be 
more responsive than UDLD.

Relying on routing protocol timers is a poor substitute for proper link 
failure detection.

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bep