The following table lists terms and definitions used in this VRF configuration discussion.
VRF Configuration Terms and Definitions
| Term | Definition |
|---|---|
| BGP L3 VPN address family | An IPv4 or IPv6 address family used to activate BGP neighbors for this L3 VPN. |
| Customer Equipment (CE) router | A router on the edge of the customer private network, running an IGP such as OSPF that is directly connected to the public network PE on which L3 VPN is configured. |
| L3 Tunnel | A Layer 3 tunnel through which L3 VPN packets pass transparently through the public core routers between the PE end-point routers. |
| Provider (P) core router | A router in the core of the public network running an IGP such as OSPF through which the L3 tunnel connecting PE routers passes. |
| Provider Edge (PE) router | A router on the edge of the public network connected to the private network customer equipment on which the L3 VPN configuration takes place |
| Route Distinguisher (RD) | A 64 bit identifier attribute that gets prepended to the user IPv4 or IPv6 address and makes the IP address globally unique across the VPN network and within the BGP routing table. |
| Route Target | Determines which L3 VPN routes are inserted into the VRF. |
| VPN ID | A virtual private network identifier used by non-VPN network resources to identify the VPN to which a client packet flow belongs. |
| VRF instance | A segregated routing domain for the routed forwarding of packets managed by the global router. |
| Native MPLS | An encapsulation method that provides the egress router path using an MPLS label. |
| MPLS LDP | A label distribution protocol capable of determining the egress router path assigned to the MPLS label. |
| LDP LSR ID | The label distribution protocol Label Switch Router Identifier. |
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