You have an Ethernet frame with an unknown destination address.
Which steps are required for the switch to process and forward the Ethernet frame?
A.
1. The frame enters the ingress port and Packet Forwarding Engine (PFE).
2. The ingress PFE performs the MAC address lookup, determines the egress PFE and port.
3. The ingress PFE forwards the frame to the egress PFE.
4. The egress PFE forwards the frame out the egress port towards the destination.
B.
1. The frame enters the ingress port and PFE.
2. The ingress PFE performs the MAC address lookup and determines the source MAC is
unknown.
3. The ingress PFE sends the header information to the RE, where the MAC is added.
4. If the RE adds a new source MAC address to the bridge table, the newly added MAC entry is
sent to all PFEs.
C.
1. The frame enters the ingress port and PFE.
2. The ingress PFE performs the MAC address lookup; the destination MAC belongs to the switch
so the PFE performs a L3 lookup.
3. The egress PFE forwards the packet out the egress port toward the destination.
D.
1. The frame enters the ingress port and PFE.
2. The ingress PFE performs the MAC address lookup, determines no match and replicates the
frame to other PFEs and local ports on same broadcast domain.
3. All other PFEs replicate the frame and forward those frames out all egress ports in the same
broadcast domain.