An engineer configured a bridge domain with the hardware-proxy option for Layer 2 unknown unicast traffic. Which statement is true about this configuration?

The correct answer is D. The spine switch drops the Layer 2 unknown unicast packet if it is unable to find the MAC. When using hardware-proxy, you should consider enabling unicast routing and defining a subnet on the bridge domain. This is because with hardware-proxy on, if a MAC address has been aged out in the spine switch-proxy, traffic destined to this MAC address is dropped…

ACI Packet Forwarding

Question

Options

AThe leaf switch drops the Layer 2 unknown unicast packet if it is unable to find the MAC address
BThe Layer 2 unknown hardware proxy lacks support of the topology change notification.
CThe leaf switch forwards the Layers 2 unknown unicast packets to all other leaf switches if it is
DThe spine switch drops the Layer 2 unknown unicast packet if it is unable to find the MAC

How the community answered

(17 responses)

A
12% (2)
B
6% (1)
D
82% (14)

Explanation

When using hardware-proxy, you should consider enabling unicast routing and defining a subnet on the bridge domain. This is because with hardware-proxy on, if a MAC address has been aged out in the spine switch-proxy, traffic destined to this MAC address is dropped. infrastructure-design-guide.html#Usinghardwareproxytoreduceflooding

Topics

#Bridge Domain#Hardware Proxy#L2 Unknown Unicast#Spine proxy

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