Docsis chat

This is a temporary solution until a wireless plant is put into place next year...

I have a basic DOCSIS 2 CISCO ubr. I have modems that come online and everything works properly.
The address of CMTS is 10.10.0.1.There is a TFTP server and DHCP server at 10.10.0.2.
The primary address of the cable modem is 10.10.4.x. The secondary address of the cable modem is 10.10.8.x

Hello,

I'm working with this CMTS and trying to squeeze the most out of the upstream. I'd like to go from QPSK to QAM16. The docs aren't doing it for me. I can't seem to figure out their modulation profiles and the whole mod-iuc-list thing. By default everything uses modulation profile 1. Here is what the mod-iuc-list shows:

Modulation list

Is there any body who have some kind of a software to check where the noise is coming from?
I'm using channel bonding in onw area where i have a really bad network, but i still have a lot of noise on all frequencies. and had the customers down.

is there any possiblity to find something to locate the noise source? so the technicians find it quickly?

Regards

Hi there,

Is there any TLV to schedule fixed DS and US speeds at certain periods of time without any policy?

Greetings

We have integrated Thomson Cable Modems THG541. Our Customers use the VoIP with Telephones and also Fax Machines.
Our Customers encounter problems with sending FAX over the cable modem. Receive FAX is not a problem.
We also have Fritzbox 6360 in our Network, here we do not have problems with sending and receiving FAX with this type.
I compared the config files between Fritzbox 6360 and THG541 and don't see any different configuration.

I'm working on setting up a cmts lab a cisco ubr7246 and using isc dhcpd 4.1.1 on centos 6.x with some Arris TM602g cable modems and I'm having some trouble with the cable modems acknowledging their dhcp offer and then configuring.

The modems will get a dhcp discover to the dhcpd server and the dhcpd server will do a dhcp offer, but the modem doesn't seem to like the dhcp offer options.

The ubr7246 has the ip address 192.168.0.1 with ip addresses for the CM's and CPE's on a interface bundle with 10.0.0.1 for the CM's and 172.16.0.1 for the CPE's

Hello list,

There is two Cisco CMTS: one 7246, and another 10012.
Cisco 10012 case:
When one modem goes offline, then this CMTS immediately delete the
CPE IP address from the own CPE database. -> this is Bad
(If i run 'show cable modem aaaa.bbbb.cccc' then i see that NumCPE is reset to 0)

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Hello all
I have a CMTS 1000 and I have noticed a security vulnerability. If I configure an appropriate ip address statically on a CPE device connected to a authenticated modem I can grab network access. Long story short this is an issue because I want the CPE devices to only get a ip address from the ip pool configured in the dhcpd server.

This may help you understand

Router
Ip address primary 10.0.0.1/24 (Modem Pool)
Ip address secondary 172.16.0.1/24 (CPE Pool)