I have a CISCO DOCSIS 2 ubr system with 4 D.S ports available and 16 Upstream ports available. I need to setup a system so that the 400 modems download at maximum speed. The 300 modems keep getting replaced with another 300 modems- this is a production plant where the modem is downloading firmware.
Right now, I have 4 D.S's paired with 4 U.S's and each of the D.S, U.S is connected to 100 modems in isolation . If I pair the left over 12 U.S's with the 4 D.S plants, does it help? I am guessing not because the modems will all lock on to 1 U.S plant? Will the CMTS actually spread the all the U.S's on all the modems automatically?
While you could do US load-balancing based on modem count to help you spread the load, it won't help in your case of updating firmwares as that would be a DS channel saturation issue.