I have 3 3750 SMI and 1 3550 EMI switches connected in a straight line (daisy chained) across 4 sites. Sites are connected with Gigabit SFPs using fiber. The core routing switch is located at Site 1. I have 1 VLAN at each site with the 3750 SMI doing inter-vlan routing at Site 1 for all the rest of the VLANs.
I want to add a second VLAN at Site 4 using QOS over that VLAN from Site 1, through Site 2 and Site 3 to Site 4. The new VLAN will be used for Video Conferencing.
Can you tell me how to configure this for each site so that traffic destined for Video Conferencing is prioritized over all other traffic.