[c-nsp] iBGP

[Mark Tohill]

Hi,

 

Another BGP Question!

 

Consider an ISP with 2 PoP's and one upstream provider peered at each
PoP.

Each PoP advertising out own parts of /16. Running iBGP with upstream
only.

 

A third PoP (CoLo) is required for DSL aggragation (with different
provider).

 

Intention is to change to eBGP and advertise own distinct blocks of that
/16 from own AS no. 

 

Redundancy/resiliency  cant be fully implemented as yet since
infrastructure being upgraded.

 

Questions:

1. eBGP IS my only option, right??

 

2. Is there a need to configure iBGP neighbors on our side across PoP's
since these can't be used yet. Any other implications to not using iBGP?

 

3. What is the best way of favouring inbound traffic on one of two
routers configured identically in same PoP in a HSRP (Active-standy
router scenario.)? We had implemented this via local-pref, but this is
only intra-AS, which we are about to loose?

 

 

Thanks,

Mark.