[c-nsp] BGP Routing Failover for multiple classes of customers

[Bruce Pinsky]

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Virgil wrote:
> On 7/9/05 3:19 PM, "Richard J. Sears" <rsears at americanIS.net> wrote:
> 
> 
>>Its customer three we have a problem with. We want customer 3 to only go
>>out provider_1 unless provider_1 fails, then be able to go out
>>provider_2. 
> 
> 
> BGP conditional advertisements.
> 
> Configuring and Verifying the BGP Conditional Advertisement Feature  [IP
> Routing] - Cisco Systems
> http://www.cisco.com/en/US/tech/tk365/technologies_configuration_example0918
> 6a0080094309.shtml
> 
> Except I'd match on prefix lists, not access-lists.  And make the NON-EXIST
> map include a match ip next hop of Provider_2 peer address
> 

This works if he isn't a transit provider needing to make different
forwarding decisions based on different customer types.

- --
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bep

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