Docsis chat

Hello, who use docsis server software?

How can i enable there dhcp option 122?

Thanks in advance

Hi all

I am trying to configure VoIP lines for Arris MTA502g. I have a SIP proxy where to register it.

The problem is that tha MTA has packetcable firmware by default. Can anyone pass me along a SIP firmware file for it?

Thanks a lot,

Manuel.

Hi all,
I wanted warn all you guys who use arris cornerstone 1500 CMTS.
Disabling default SNMP acceslist entery disables ANY MANAGEMENT. You can't login by telnet, CLI etc.
Don't make the same mistake I did: don't disable default SMNP acces entry or even better: don't buy that CMTS at all ;-)
BTW: since 1000 is almost the same as 1500 it should also has the same effect on 1000.

John

My provisioning system is finally coming together and I'm polishing up the monitoring part. I've dug through the MIB tables (for modems) and pulled out what I think are important to be able to see, but I'm curious what other ones (that I may have overlooked) would be a good addition.

So far I have:

uptime: 1.3.6.1.2.1.1.3.0
TX power: 1.3.6.1.2.1.10.127.1.2.2.1.3.2
RX Power: 1.3.6.1.2.1.10.127.1.1.1.1.6.3
SNR: 1.3.6.1.2.1.10.127.1.1.4.1.5.3
microreflections: 1.3.6.1.2.1.10.127.1.1.4.1.6.3
resets: 1.3.6.1.2.1.10.127.1.2.2.1.4.2
lost sync: 1.3.6.1.2.1.10.127.1.2.2.1.5.2

Hi all,
We have 2x arris 1500 running on 3,2MHz QPSK upstreams. Theoretically there is 5Mbps of bandwidth available per upstream. But when US utilization is at 50% rtt is about 20 ms. When it reaches 70% it is almost unusable - 50-60ms. On average there is 70-80 modems connected per US.

Is there any way of using 70-80 % of US bandwidth and not making delays so big?

Hello,

I do not run an ISP. I am just interested in DOCSIS, and have a question about a particular scenario, so I hope that's ok. An unknown modem is plugged into the cable network with an HFC MAC address that is not from a paying customer. It gets the config file "unknownmodem.bin", which is shown at the bottom of this post.

Does anybody has deployed Wireless Docsis for VoIP and Data Support?

I am getting this error on two modems out of just over 100. The modem picks up an IP, but the CPE can't get one. I've talked to one of the customers and she says she had a router hooked up at first, but switched over to her computer. We've power cycled to modem several times, but the problem persists.

Does this sound like an issue with the DHCP config or is the modem not releasing it's CM cache?

Here is my dhcp and modem configs:

dhcp:

class "cm" {
match if substring(option vendor-class-identifier,0,6) = "docsis";
spawn with option agent.remote-id;
}

I am running a FOCS server hooked to a CC8000 cmts. I am only seeing 50 CM's get an ip and the rest are in ranging complete state. Any information on where to find the place to set a higher limit or anythign on this would be great.

Thanks,
Mark

I'm trying to pull RX power and SNR data for all registered modems off the CMTS. When I did a snmp walk of the CMTS, I noticed OID's were in place:

RX power: 1.3.6.1.2.1.10.127.1.3.3.1.6
SNR: 1.3.6.1.2.1.10.127.1.3.3.1.13

When I walk these OID's they mostly return 0 value, but an occasional one will spit out a number. Do I need to pass a filter or something in the modem config to get it to relay this info back to the CMTS?