Vrf-Ce Overview - Alcatel-Lucent OmniAccess 700 Cli Configuration Manual

Release versions: 2.2, 2.2-r02, 2.3

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VRF-CE technology is similar to BGP/MPLS VPNs. The primary difference

between the two is the manner in which the connectivity is established between

the remote sites of a VPN. MPLS VPNs use MPLS tunnels to provide connectivity

between the remote sites. VRF-CE on the other hand, requires dedicated point-to-

point communications channels to provide inter-site connectivity between the

remote sites. These communication channels could be either Layer 2 circuits

(such as frame relay PVCs or ATM PVCs) or Layer 3 tunneling protocols such as

GRE, IP-IP, IPSec, L2TP, etc.

Figure below depicts the possible deployment scenarios using VRF-CE. It shows

three VPN networks; Orange, Green, and Blue. Each VPN has three sites 1, 2

and 3. Orange VPN Site 1 connects to a non-VRF aware router at site 2. Orange

VPN Site 1 connects to a VRF-aware router at site 3 via PVCs. Green VPN site 1

connects to a VRF-aware router at site 2 via PVC. Green VPN site 1 also

connects to a VRF-aware router at site 3 via an IP tunnel. Green VPN site 3

connects to site 2 via PVC. Blue VPN site 1 connects to a non-VRF aware router

at site 2 via an IP tunnel. Similarly, it connects to a VRF-aware router at site 3 via

an IP tunnel.

Figure 13: VRF-CE Deployment Scenario

OA-780 CLI Configuration Guide

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VRF-CE Overview