[c-nsp] iBGP v eBGP

[Michael Robson]

For our shortly-to-be-upgraded network core, we are going to have each
router
iBGP peering to each other using loopbacks with OSPF as our IGP advertising
these loopbacks; sites connecting to the core and our WAN links will connect
using eBGP. 

The question: what are the benefits of using iBGP in the core instead of 
just using eBGP everywhere? Someone asked me this and I couldn't answer the
question to my own satisfaction let alone his.

Thanks,

Michael Robson.