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7.1. Ethernet Auto-discovery Route

7.1. Ethernet Auto-discovery Route​

An Ethernet A-D route type specific EVPN NLRI consists of the following:

                +---------------------------------------+
                |  Route Distinguisher (RD) (8 octets)  |
                +---------------------------------------+
                |Ethernet Segment Identifier (10 octets)|
                +---------------------------------------+
                |  Ethernet Tag ID (4 octets)           |
                +---------------------------------------+
                |  MPLS Label (3 octets)                |
                +---------------------------------------+

For the purpose of BGP route key processing, only the Ethernet Segment Identifier and the Ethernet Tag ID are considered to be part of the prefix in the NLRI. The MPLS Label field is to be treated as a route attribute as opposed to being part of the route.

For procedures and usage of this route, please see Sections 8.2 ("Fast Convergence") and 8.4 ("Aliasing and Backup Path").

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