For the unicast traffic from the CCEP to the CEP, refer to the following figure.
Unicast forwarding traffic from
the CCEP to the CEP
Unicast traffic from Host A and Host B to Host 1 can be hashed to Leaf 1 and Leaf 2.
Leaf 1 learns the MAC address of Host 1. This traffic is locally switched.
Leaf 2 has the remote MAC address of Host 1 against
the tunnel. This traffic is sent over the ICL.
The MAC addresses of Host A and Host B are learned as
CCL and CCR pointing to the local client port (Po10 and Po20).
For the unicast traffic from the CEP to the CCEP, refer to the following figure.
Unicast forwarding traffic from
the CEP to the CCEP
Leaf2 learns the MAC address of Host 2 that is
synchronized to Leaf 1. The Unicast traffic from Host 1 to Host 2 is sent over the
ICL tunnel to Leaf2 and then is locally switched.
Based on the learned CCL and CCR MAC addresses, Leaf1
locally switches the unicast traffic from Host 1 to Host A and Host B.
If the local client port goes down, the client MAC address is reprogrammed in the hardware to point to the ICL tunnel. Then the traffic is sent over the ICL to Leaf2 where the learned CCL and CCR MAC addresses ensure the traffic is switched to the client.
Unicast forwarding traffic from
the CEP to the CCEP (local client down)
