[c-nsp] Customers routers

[Christopher Gatlin]

If you are providing the customers a MPLS VPN solution then OSPF can be a
better service offering from them and you. Multi-protocol BGP in a MPLS VPN
solution can propagate critical OSPF information between CE routers. Making
it a seamless enterprise IGP between geographically separated sites for the
customer.

The problem with delivering BGP to the CE is that the burden falls on the
customer to make redistribution work with their enterprise IGP. Hardly
seamless for the customer that generally doesn’t have the engineering
resources to deal with it.


Chris


On Fri, Sep 3, 2010 at 7:11 PM, Nick Hilliard <nick at foobar.org> wrote:

> On 04/09/2010 00:07, Mohammad Khalil wrote:
> > we use OSPF to transport customers routers into our backbone , i read in
> > one of Cisco presentations that its best to use BGP for the same purpose
>
> This is true, yes.  OSPF is a link state protocol, the purpose of which is
> to instruct your interior network on its complete connectivity state.
>
> The purpose of BGP, on the other hand, is to enable policy routing.  So
> it's designed from the ground up to ensure that you can easily do things
> like prefix filtering.
>
> For customer connectivity requirements, you need a policy routing protocol,
> not an interior gateway protocol.
>
> Nick
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