Hello!

Assume that Catalyst 3560 switch gets a frame on one of its ports. Let the port be Gi0/3

The frame is an arp-reply paket, so SHA and DHA fields are unicast addresses.

Let the SHA = A.A.A and DHA = B.B.B

When the frame comes onto that interface, the mac-address table on the switch has such entry:

switch#sh mac address-table dynamic vlan 5
          Mac Address Table
-------------------------------------------
Vlan    Mac Address       Type        Ports
----       -----------                --------        -----
5         B.B.B               DYNAMIC   Gi0/3

Question: what will happen with the frame?

Tnx.

Alex.