What is the purpose of an EVPN Ethernet segment identifier (ESI)?

The correct answer is D. to prevent loops within a LAG connection. An EVPN Ethernet Segment Identifier (ESI) is used to uniquely identify a multi-homed Ethernet segment, such as when multiple links from a device connect to the same EVPN fabric. Its primary purpose is to prevent loops within a LAG connection by ensuring only one active…

Ethernet VPN (EVPN)

Question

Options

Ato provide a hop count between devices
Bto identify Layer 2 frame types for filtering purposes
Cto specify a BGP community
Dto prevent loops within a LAG connection

How the community answered

(28 responses)

B
4% (1)
C
4% (1)
D
93% (26)

Explanation

An EVPN Ethernet Segment Identifier (ESI) is used to uniquely identify a multi-homed Ethernet segment, such as when multiple links from a device connect to the same EVPN fabric. Its primary purpose is to prevent loops within a LAG connection by ensuring only one active forwarding path while still enabling redundancy and load balancing.

Topics

#ESI#Ethernet segment identifier#LAG#multihoming loop prevention

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