In mVPN,what means " bgp peering address of PE " ?
In book "Definitive mpls network design" ,when refer to mVPN,which said:
3) If the olist contains a tunnel interface, the multicast packet is encapsulated using GRE.
The packet's source is set to the BGP peering address of the PE router.
The destination address is set to the MDT group address associated with the customer VPN.
what means "the BGP peering address of the PE router" ?
Is that "peering address = neighbor xxx update-source ??"
If the PE router have mp-ibgp,mb-ebgp adjs, it will choose which peering address?
If we can manually chosen one as source address in mvpn GRE encapsulation ?