Click the Exhibit button. Referring to the exhibit, which statement is correct when a failure exists on the link between host2 and switch5 on this EVPN-VXLAN fabric?
A.
The switch5 device will send a Type 2 route to all peers.
B.
The switch5 device will send a Type 4 route to all peers.
C.
The switch5 device will send a Type 1 route to all peers.
D.
The switch5 device will send a Type 3 route to all peers.
Type 1 routes are used for per-ES auto-discovery (A-D) to advertise EVPN multi-homing mode. Remote ToR leaf devices in the EVPN network use the EVPN Type 1 route type functionality to learn the EVPN Type 2 MAC routes from other leaf devices. In this route type ESI and the Ethernet Tag ID are considered to be part of the prefix in the NLRI. Upon a link failure between ToR leaf and end server VTEP withdraws Ethernet Auto-Discovery routes (Type 1) per ES. The Juniper EVPN multi-homing Ethernet Tag value is set to the VLAN ID for ES auto-discovery/ES route types.
Mass Withdrawal - Used for fast convergence during link failure scenarios between leaf devices to the end server using Type 1 EAD/ES routes.
D. The switch5 device will send a Type 3 route to all peers.
Explanation:
In EVPN-VXLAN, BGP EVPN route types are used to distribute MAC, IP, and reachability information within the fabric.
Type 1 (Auto-Discovery) → Used for ESI (Ethernet Segment Identifier) and multihoming.
Type 2 (MAC/IP Advertisement) → Used to advertise host MAC and IP addresses.
Type 3 (Inclusive Multicast) → Used to update VXLAN flooding information when a failure occurs.
Type 4 (ESI Label) → Used for designating active/backup paths in multi-homed setups.
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