If the .bin exists on any of the other switches you can move it to a TFTP server and then TFTP it to the switch that needs it locally.   Let's say SW1 has the image   SW1# copy flash:cat3k.bin tftp:   SW1#Address or name of remote host: Your TFTP ser...

If I am understanding correctly, all the traffic from these other switches travel through the core SW to the FW out to the internet. If this is case, and you're able to plug into that core switch, setting up a SPAN would be able to accomplish this. S...

Maybe try just isolating the switch with the outdated OS, and updating it locally? Transferring the image from one of the newer switches via tftp to your PC, and then xferring that over to the old switch. Then try stacking them while they're on the e...

To answer the question when the switches are stacked they are logically considered to be ONE switch. Rebooting the master will cause the whole stack to reload. If you want to change the master you can change the priorities so that the switch you want...

L2 Switch:   Trust commands on the interfaces the phones are connected to.   L3 Switch:   Trust command on the trunk to L2   This allows dscp tags from the phones to go through the l2 switch and the l3 switch will trust dscps coming in through the tr...