Hi,
Networking novice here. Been reading up on Cisco switching (though I guess this is a generic switching question).
As cut-through switching achieves low latency by only reading as far as the dest address, how does such a switch form a table of source addresses? If it doesn't read the source address, surely it can never build up a table matching ports to mac addresses.
I'm sure it's not that simple, but I can't figure out what I'm missing here! All useful (i.e. non-RTFM) comments welcomed.
Thanks.
Networking novice here. Been reading up on Cisco switching (though I guess this is a generic switching question).
As cut-through switching achieves low latency by only reading as far as the dest address, how does such a switch form a table of source addresses? If it doesn't read the source address, surely it can never build up a table matching ports to mac addresses.
I'm sure it's not that simple, but I can't figure out what I'm missing here! All useful (i.e. non-RTFM) comments welcomed.
Thanks.