I am looking to find the best operating range and/or configuration for stability for our plant. Most notably, what you are using in respect to frequency, channel width, and Qam with respect to reducing noise and their relationships with one another. Right now, the best SNR we can achieve is 36.1, on a good day. It tends to be between 30 and 33, but periodically experience drops below 28. At or below 28, we start to drop packets and ultimately get upset customers with intermittent problems. As you can see, there isn't much room for play.
Suggestions on keeping SNR stable. We are running 64 QAM and every so often are experiencing High fluctuations in our SNR. Seems if we are chasing our tails more times than not. What maintenance work are you doing to keep this number stable as possible?
Hello All - I have a uBR7111E in for repair, the start-up boot displays 2 errors. They are:
%PA-2-UNDEFIO: Unsupported I/O Controller (type 65535) in I/O Bay. The I/O Controller network interfaces will be unavailable.
&
%LINK-4-NOMAC: A random default MAC address of 0000.0c49.1a93 has
been chosen. Ensure that this address is unique, or specify MAC
addresses for commands (such as 'novell routing') that allow the
use of this address as a default.
<<< >>>
We are experiencing a situation with our cable plant and setting the levels. What is the best RF signal level hitting at The cable modem? I have done some investigating and the best level I have found is between 11 and 16db. I have found the modem operates and functions properly. Outside this range we start to experience problems. I have talked to the lead technician and he is claiming that we can not support that because the signal would be too high for the tv's too handle. It would start to overload and ruin our customers' tv's.
Just signed up so hi to everyone. I have been offered some contract work with a local cable company who are in the process of rolling out DOCSIS 2 to their customers. I have expierence with CISCO routers/switches having done the CCNA/CCNP/CCIE as part of my degree but I'm new to these devices and am on a steep learning curve at the moment. The main problem is the equipment was purchased second hand from another cable company who still has held onto the manual since they still have some devices of their own. I cant seem to find out anything on the Internet.
I have a cisco CMTS ubr7246. by chance someone has already implemented a bandwidth management interfaces on cable, especially downtream? for example, to 256QAM modulção 32mbps downstream is reached the rule would be applied. Could post an example?
