The PE-CE protocol allows a service provider offering Virtual Private Network (VPN) services to their customers to peer Customer Edge (CE) routers with their Provider Edge (PE) routers . RFC 4577 defines how the PE-CE protocol is implemented using the OSPF routing protocol.
When the PE router becomes a routing peer of the CE router, the PE router learns the routes that lead to the CE's site and can redistribute those routes to other PE routers that attach to the same VPN.
Enabling PE-CE enables the following functionality:
Use the enable-pe-ce command in OSPF configuration mode to enable the PE-CE protocol on the router.
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