Which three BGP messages pass EVPN information between devices? (Choose three.)

Question

Options

• Aopen messages
• Bupdate messages
• Cnotification messages
• Dkeepalive messages
• Eroute-refresh messages

• A
  83% (15)
• C
  6% (1)
• D
  11% (2)

Explanation

A - BGP open messages contain information used to negotiate the establishment of sessions but do not contain route information itself. They may contain information such as I can exchange EVPN AFI x/SAFI y NLRI with you', but not EVPN information itself. B - BGP update messages can contain EVPN NLRI information. This is the routing information' NOT C - BGP notification messages indicate error conditions and contain basic error codes but no routing information. Technically they could refer to an error relating to EVPN, however this is not a good fit for the question being asked. NOT D - BGP keepalive messages are always 19 bytes and uniform; no NLRI information. E ?A BGP speaker can send a ROUTE-REFRESH message to request the receiver re-sends their previously-sent BGP updates which, as per C, can include EVPN NLRI information.

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