• Different routing protocols could be used between PE & CE.
• The PE-CE routing protocols run independently at every site.
• Redistribution of prefixes between MP-BGP routes PE-CE routing protocol.
• when using rip:
• when redistribute the MP-BGP routes into RIP. use
• redistribute bgp N metric metric {X|transperent}
• here N is AS number.
• X is the metric assigned to the RIP routes.
• if you are using the keyword transperent the rip metric will be recovered from RIP metric learned at the remote site.