After I do clear cable modem reset over ubr modem itself soft resets but ethernet connection keeps up, so the client behind the modem itself don't ask for new ip address. Same thing would happen if for some reason the modem would loose CMTS connectivity. Now the thing is after the modem comes back online cpe count on it keep saying 0. Of course we are forcing dhcp verify on cable interface
If I do it via SNMP 1.3.6.1.2.1.69.1.1.3.0 ethernet is disabled and reeanbled and client gets his ip renewed.
we are using Arris C3 CMTS and have found out that with Thomson and Motorola CMs it happens that after they have uptime of litlle more than a day, they are starting to allow data transfers more than 30 MBit in downlink (speed limit in config file is set to 10240000 in downstream and 1024000 in upstream).
If you get this error on your ARRIS CMTS 1000 or 1500:
EH_event: fatal event: CMTS hardware failure: downstream frequency could not lock
One possible cause is that it's too stinkin' cold in your Head End! I've discovered the hard way that these CMTSs do not work below 59 degrees F. Coincidently, either I do. :) I hope this helps someone. Darn it's cold in Michigan today!!!!
I just started to have modems randomly reset. It does not appear to be a upstream noise problem nor a downstream SN problem.
The only thing in the modem log is:
Unicast Ranging Received Abort Response - Re- initializing MAC
Modems are SB5101.
Anybody have some thoughts as to what could be the problem ?
Is there a limit on maximum ip address and subnets routed through a cable modem? Assuming the modem is bridged and i am routing to a CPE device behind the cable modem.
I am buying a Cisco ubr7246vxr and I need what is the best ios choise. I have in mind the 12.3(13a)BC6 that i have running on a ubr7223, but I like to know if there is a better ios that you have running.
The CMTS comes with 2 mc16u and the npe-400.
Were can i find a cmts IOS list? or ubr7200 ios support?
I need buy a CMTS to upgrade my old UBR7223 with 2 MC16C cards, I was thinking on the UBR7246VXR, but I really dont know the porpuse of the upconverter on the MC28U card. I have the possibility of buy MC28C too, but if the upconverter is a good idea i will buy that.
Can anyone teach me the differences and the adventages of the upconverter? Or something like MC28C vs MC28U?
Hello everyone. I'm a bit confused about the IPv6 feature of docsis 3.0. If someone has the topic clear, please could you answer some questions.
One thing that is not clear to me if it is possible still possible to leave cable modem provisioning in IPv4 and assign IPv6 addresses only to subscribers' CPEs?
Another question that bothers me. If there we've got a docsis 3.0 cmts and a docsis 2.0 cable modem, would it be possible to assign an IPv6 address to a CPE behind that docsis 2.0 cable modem?
