|reply to dorkino |
Re: Modem developing an affinity for 1 of 4 downstream channels
If you look at the Configuration tab in the modem admin pages, you will see a category called "Favorite Frequency", and most likely that "Favorite Frequency" will be the one that you see being given preference.
I suspect that the phrase "Favorite Frequency" was not a random selection. --
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My 6120 is evenly split between the channels. I think that 'favorite frequency' just means the first one it tries on a reboot. Just like a non-D3 modem, it just remember that last one used. Once it makes the connection, it is then assigned the other channels.
I wonder if the 6121 is counting ARP traffic or whatever that may only travel over the primary channel, but the 6120 isn't.
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FWIW, the UCD (Upstream Channel Descriptor) information that the modem needs to know in order to establish the frequency of the return / upstream channel to talk back to the CMTS on is contained on that favorite channel. It is my understanding the the UCD data is not present on all the forward / downstream channels on a system, just certain ones.