You work for a service provider and need to build EVPN service which provides an active/active multihoming topology using a single CE at each site. In this scenario, which two statements are true?…

The correct answer is A. An Ethernet segment appears as a LAG to the CE device. D. A designated forwarder is elected for forwarding BUM traffic to the CE device. The Ethernet segment on the CE device can either be configured as a link aggregation group (LAG) or as an ECMP path. The PE router that assumes the primary role for forwarding BUM traffic to the CE device is called the designated forwarder (DF). When a single-homed CE device is…

MPLS Layer 2 VPNs

Question

You work for a service provider and need to build EVPN service which provides an active/active multihoming topology using a single CE at each site. In this scenario, which two statements are true? (Choose two.)

Options

AAn Ethernet segment appears as a LAG to the CE device.
BA backup designated forwarder is elected for forwarding BUM traffic to the CE device.
CThe Ethernet segment identifier must be an all zeros identifier.
DA designated forwarder is elected for forwarding BUM traffic to the CE device.

How the community answered

(24 responses)

A
79% (19)
B
4% (1)
C
17% (4)

Explanation

The Ethernet segment on the CE device can either be configured as a link aggregation group (LAG) or as an ECMP path. The PE router that assumes the primary role for forwarding BUM traffic to the CE device is called the designated forwarder (DF). When a single-homed CE device is attached to an Ethernet segment, the entire ESI value is zero.

Topics

#EVPN#active/active multihoming#designated forwarder#BUM traffic

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