Editing Multiprotocol Label Switching (section)

====Provider router====
In the specific context of an MPLS-based [[virtual private network]] (VPN), LERs that function as [[ingress router|ingress]] or [[egress router]]s to the VPN are often called [[provider edge]] (PE) routers. Devices that function only as transit routers are similarly called [[Provider router|provider]] (P) routers.{{Ref RFC|4364}} The job of a P router is significantly easier than that of a PE router.