Chapter 3 Evpn Virtual Private Wire Service (Vpws); Information About Evpn-Vpws Single Homed - Cisco NCS 5500 Series Configuration Manual

EVPN Virtual Private Wire Service (VPWS)
The EVPN-VPWS is a BGP control plane solution for point-to-point services. It implements the signaling
and encapsulation techniques for establishing an EVPN instance between a pair of PEs. It has the ability to
forward traffic from one network to another without MAC lookup. The use of EVPN for VPWS eliminates
the need for signaling single-segment and multi-segment PWs for point-to-point Ethernet services.
EVPN-VPWS single homed technology works on IP and MPLS core; IP core to support BGP and MPLS
core for switching packets between the endpoints.
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Information About EVPN-VPWS Single Homed

The EVPN-VPWS single homed solution requires per EVI Ethernet Auto Discovery route. EVPN defines a
new BGP Network Layer Reachability Information (NLRI) used to carry all EVPN routes. BGP Capabilities
Advertisement used to ensure that two speakers support EVPN NLRI (AFI 25, SAFI 70) as per RFC 4760.
The architecture for EVPN VPWS is that the PEs run Multi-Protocol BGP in control-plane. The following
image describes the EVPN-VPWS configuration:
• The VPWS service on PE1 requires the following three elements to be specified at configuration time:
Information About EVPN-VPWS Single Homed, page 147
Configuring L2VPN EVPN Address Family Under BGP, page 148
Configuring EVPN-VPWS, page 149
Configuring EVPN-VPWS: Example, page 151
BGP Configuration Guide for Cisco NCS 5500 Series Routers, IOS XR Release 6.2.x
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