I have some servers that are showing signs of using more bandwidth than the single 802.1q trunk connection can feed them (a single 1 Gig connection). I am going to add a second switch to make a stack (using 3750's) and with that move to an etherchannel 802.1q trunk configuration of 4 1 gig connections. I have been researching this and if I understand things correctly, with etherchannel trunk 802.1q configurations, the work is done at the port-channel interface and all I have at the physical interface is channel-group 1 mode on ?
What I would like to do is the add the channel-group 1 mode on command to the existing physical trunk interface and then take away the individual trunk commands from the physical interface, will that be doable or just leave the commands on the physical interface since they wont be doing anything ? Would I then just add the channel-troup 1 mode on command to each additional interface that I want to be a part of the etherchannel config ?
On a related question as the port channel numbering, from what I have read the port channel number is local to the switch it is being configured on. So based on that, should I use the same port channel number on each end of a particular etherchannel config or does it matter ?