[quagga-users 14861] Re: ospf route-map

On 01/11/2017 17:41, William Herrin wrote:
> 
> Hi Mark,
> 
> I figured something like this was the case. Here's the key thing to 
> understand about OSPF: it's strictly an interior gateway protocol. It 
> does not have the functionality you need to cross administrative or 
> security domain boundaries. To cross domain boundaries you should use an 
> exterior gateway protocol, such as BGP.
> 
> So, don't extend OSPF to the routers which have the customer-only 
> routes. Use BGP there with the 65000-series private AS numbers. Control 
> your filtering at the OSPF/BGP border and pick borders such that the 
> filtering you need can happen.

Hi Bill

logically that makes sense, the only real need for the OSPF is due to 
the multiple links between the routers and using OSPF to create a type 
of auto failover solution. If I use BGP between Router B and C then I 
loose the failover/shortest path feature.

Thank you,

Mark Adrian Coetser