[c-nsp] bgp transit, selecting providers based on source IP

[Bruce Pinsky]

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Wayne Lee wrote:
> Hi List
> 
> We currently have 3 transit providers. all works as expected. We
> recently have connected a customer who requires BGP transit from us
> but with a twist.
> 
> The customer for whatever reason do not want their traffic going via
> our preferred provider, is there any way I can force the customers
> outbound traffic to go via my other 2 providers instead?
> 
> I have created the prefix-lists to stop announcing the customers
> routes via the main provider so no traffic should return by them. The
> customer is multi-homed with another transit provider.
> 
> 

You could either use Policy Based Routing to forward based on their source
address range or you could use VRF-Lite to create a separate routing table
instance that only includes the routes to 2 out of the 3 providers.

Which is best would require a bit more info about your environment.

- --
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bep

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