L2VPN(BGP) over colored SR-TE Tunnel

This feature introduces color-based mapping of BGP-based Layer 2 VPN services to segment routing-traffic-engineered (SR-TE) LSPs. You can specify color as a protocol next-hop constraint (in addition to the IPv4 or IPv6 address) for resolving next hops over static colored or BGP-signaled SR-TE LSPs. This is called the color-IP protocol next-hop resolution, where a configured resolution map is applied to the BGP-based Layer 2 VPN services. The device supports colored SR-TE LSPs associated with a single color. In general, a Layer 2 VPN service may be assigned a BGP color extended community on the egress router where the Layer 2 VPN network layer reachability information (NLRI) is advertised, or on an ingress router where the Layer 2 VPN NLRI is received and processed. Multiple BGP color extended communities might be assigned to a Layer 2 VPN service, referred to as multicolor Layer 2 VPN services. In such cases, the color extended community with the smallest color value is considered as the color of the VPN service, and all other color extended communities are ignored.