[c-nsp] vs mac table in 3750 switches

[sthaug at nethelp.no]

> L3sw --trunk--- L2sw1 --trunk--- L2sw2
> 
> It it possible that the L2sw2 switch won't send mac address table updates to the others switches if src and des mac is located on it self.

Switches don't send "mac address table updates" to one another. Switches
send Ethernet frames, and *learn* MAC addresses based on which port/VLAN
a frame is received on.

Steinar Haug, Nethelp consulting, sthaug at nethelp.no