On 13/Jul/16 22:23, Clinton Work wrote:

> On the primary BGP session I would set Local-pref 150 and send MED 100
> for example.  
> On the backup BGP session, set local-pref 100 and send MED 150.   
>
> The local-pref will set the preferred route in your network to use the
> primary BGP session.   The MED should influence the customer to use the
> primary link as their preferred route as well.  Savvy customers can
> easily override the MED value, but it should work for the majority of
> the customers.  

Savvy customers can just de-aggregate and override LOCAL_PREF values.

Also, assuming the customer resets MED, LOCAL_PREF only provides control
in one direction. Nothing stops the customer from statically routing
traffic over a specific path (or both paths simultaneously) for outbound
traffic.

Mark.
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