VPRN Service Overview
Page 554 7210-SAS M Services Guide
CE to PE Route Exchange
Routing information between the Customer Edge (CE) and Provider Edge (PE) can be exchanged
by the following methods:
•Static Routes
•E-BGP
Each protocol provides controls to limit the number of routes learned from each CE router.
Route Redistribution
Routing information learned from the CE-to-PE routing protocols and configured static routes
should be injected in the associated local VPN routing/forwarding (VRF). In the case of dynamic
routing protocols, there may be protocol specific route policies that modify or reject certain routes
before they are injected into the local VRF.
Route redistribution from the local VRF to CE-to-PE routing protocols is to be controlled via the
route policies in each routing protocol instance, in the same manner that is used by the base router
instance.
The advertisement or redistribution of routing information from the local VRF to or from the MP-
BGP instance is specified per VRF and is controlled by VRF route target associations or by VRF
route policies.
VPN-IP routes imported into a VPRN, have the protocol type bgp-vpn to denote that it is an
VPRN route. This can be used within the route policy match criteria.
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