Let me explain you the network. There are two 7200 series routers at each core location(we call it DC).One is to be considered to be primary and the other secondary. At each loaction there is one has 2Mbps MPLS based link from the service provider to the primary and a ISDN line to the secondary.Means if the primary 2Mbps link fails it shld fail over to ISDN.
From the service provider end, we have BGP public AS number.
Now my question is:
Can we implement MP-BGP in this network ?,othe prime requirement is to segregate the networks.
If yes will the service provider BGP will convey(carry) all the VRF information to each PE router.This is the primary concern, because not sure how it works on BGP confederation boundaries.
One more concern is that:
If there is another PE under PE(PE1->PE2).Do i need to define all the neighbours under PE2 OR is there another way of doing it?(beacuse i need to decrease on bandwidth consumption as it will create individual TCP sessions for each neighbour).I think route reflector is the way to do it but i need to confirm.
Another concern is bandwidth consumption:
How much bandwidth does a MP-BGP eat up?
Happy to help!