Currently we have a 2M serial (V.35) link connecting to our providers MPLS cloud via BGP. We are trying to upgrade to 4M and the soln presented to us is a 2 x 2M serial link. I am trying to decide if I should use mlppp and run BGP on it via the multilink interface or use the eBGP multihop load balancing solution. In this latter scenario the BGP peering would be via the loopback addresses and each of the two serial interface would have an ip address each. has anyone set this up before and can advise which option is better or feasible. Is there any thing in particular that one may look out for - to enable or disable the ip route caching maybe one? We also have (Cisco Modular) MQC QOS enabled on the routers serial interface.