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New Member

Managing UBR10K Upstream Utilization

As an example:

In an attempt to manage upstream utilization (keep it under 75%) we've redesigned 128 upstreams for an average modem count of 111 modems/upstream. Also we're using load-balance method utilization on all freq split nodes which make up the majority of the upstreams. These two deployment methods were not enough to stem the tide in 40% of the cases so we've now deployed 16qam (256 on the downstream). This seems to have done the trick for now however we'll probably be looking for more options once users chew up this new found bandwidth.


We're looking into tools such as Sandvine and P-Cube for traffic characterization/management however this may not happen soon. I'm wondering if the CMTS has onboard tools we could deploy that we've not used.

Also what metric would you suggest for modems/homes past/penetration rate per upstream - the old 500 homes past at 40% penetration = 200 modems per doesn't seem to hold water antmore.

Thanks, Dan

New Member

Re: Managing UBR10K Upstream Utilization


What kind of speed are you offering to your customers ?

In our setup we use ubr7114E's and have about 110-150 users pr US. We offer only 512k upload to keep the traffic down to a minimum (thats a must).

I can recommend this mailing-list to all these hardcore cmts/hfc questions :



New Member

Re: Managing UBR10K Upstream Utilization

Most of our res customers are 5M/512K.

New Member

Re: Managing UBR10K Upstream Utilization

wow, that alot!

You running Docsis 2.0 ? if not, maybe you could think about doing that to get more us speed