[j-nsp] BGP RR in MPLS VPN

[E Gary Hauser]

> Hi Guys,
> 
> What you are looking for is that in order for the l3bgp table to have active
> routes to pass to the other reflector clients the next hop for all PE¹s in the
> vpn global table (l3bgp table) must be a LSP learned route.  In the
> traditional sense this would require a full mesh of lsp¹s to the RR and a full
> mesh of lsp¹s to each PE.  A simple work around for this in order to not have
> lsp¹s going to the RR from each PE is to build a fake LSP on the RR to it¹s
> own loopback. Then install 0/0 under this LSP then their will be a 0/0 entry
> in inet.3 which will resolve all next-hops for the PE routes in the Global vpn
> table. Of course this will not actually forward traffic. The sole purpose of
> this 0/0 is to resolve routes and subsequently allow the RR to advertise the
> routes to other clients that are now active.
> 
> 
> I hope this clears things UP...
> 
> Cheers,
> 
> Gary Hauser 
> JNCIE #12, CCIE # 4489
> 



Senior Instructor / Proctor
Education Services - APAC
Juniper Networks (Singapore) PTE, LTD
3 Anson Road # 11-02
Spring leaf Tower
Singapore 079909

ghauser at juniper.net