MPLS Layer 2 VPN Characteristics

Characteristics of a Layer 2 VPN include:

• Use of LDP or RSVP-TE to establish the underlying pseudowire transport LSPs.
• Pseudowire endpoints are identified through configured VPLS/VPWS peer IP addresses.
• Configuration of a Layer 2 VPN pseudowire ID doubles as VPN ID.
• Customer packet VLAN tags may be overwritten on egress from the pseudowire allowing local service VLANs or VMANs interconnected over the same Layer 2 VPN to have different IDs.
• Customer packet VLAN tags can be included or excluded from packets transmitted on the pseudowire.
• Customer packet VLAN tag ethertype value can be modified before packet is transmitted on the pseudowire, allowing local service VLANs or VMANs interconnected over the same VPLS to have different 802.1Q tag ethertype values.
• Support for full-mesh VPN architectures.
• Support for VLAN, VMAN, and port Layer 2 VPN services.
• Support for enabling and disabling VPLS and/or the VPLS service.
• Support for enabling and disabling VPWS and/or the VPWS service.