Docsis chat

Hi
My name is Demian Pecile, and I am starting to admin CMTS.
I have an Arris C3 and 50 CM550.
I have 2 questions ...
My RF is deep fiber so, 2 amplifiers max from optical node to the customer. I choose QAM64 (modulation profile 30) for upstream, and I have 50 for SNR and 40-43 for MER in each upstrem.
This values are ok ? I think they are great, but my next question make me think I am missing something.

Having a very strange problem here, and I hoping someone can provide some insight. I have two CMTS's (UBR7223s) connected to the same provisioning system. One of the two UBR's is having a strange problem: If I change the ip address of a cm connected to this UBR, in the provisioning system, the modem will not be provisioned properly, and is unable to come online. It will become stuck at: init(d).

If I disconnect the cm for 24 hours, then it boots up with the new ip. It seems, for some reason the UBR's internal database is not being updated.

Any Ideas?

Hello,

can anyone explain to me what concatenation-control is used for in Arris 1000 cmts ? It has 2 values (enabled/disabled).

I cannot find any mention of it in official documentation.

Hello, here is the situation:

1) the CM has no problems, it is registered.
2) the MTA is trying to get the DHCP info and the dhcp is making the offer, but the MTA seems to ignore it for some reason, I suppose the offer package is incomplet and/or wrong, so the MTA falls in a discover-offer loop.

What am I using?
dhcpd on debian
ubr7246 vxr
CM SA with eMTA
ethereal running on the DHCP server interface

I really appreciate any help with this issue.
RGDS,

G

The dhcpd.conf is next:

**************************************************

ddns-update-style none;

Hello,
Does anyone know an SNMP OID to get CPU load from Arris Cornerstone 1500? Or even better - have the whole MIB?

thanks

I just signed up with Kabel Deutschland for Internet, and I received a THG540 cabel modem. How do I configure the SIP ports on it though? I can't see any option anywhere to allow me to type in my VoIP provider's SIP information. So far I've been accessing the modem via the Ethernet port: could it be that accessing it via USB reveals access to all these settings? (Note that Kabel Deutschland is NOT my VoIP provider!)

Hello,

can I somehow isolate my clients, so that they cannot see each other in docsis 1.0 network ? They are all on one upstream and share same downstream ? CMTS is Arris 1000 CMTS

I would like to know that specific CableLabs document that specifies the TLV or DOCSIS specific MIB type.

I am able to parse a CM or eMTA file into "records" and in turn parse the records based of if they are TLVs or MIBs. However I would like to know that names of the specific TLV e.g. NetworkAccess = 3.

I know that vendor dependant MIBs will vary by Vendor and I can get those from the Vendors. I am presently just interested in the DOCSIS lists.

Thanks in advance.

Hello!
Just want to ask if anyone experienced problems with the implementation of Thomson THG-540(SIP)?
We are using THG-520 modems without any problems, but the 540 EMTA part of modem doesn't get it's IP.

The log from the modem:
Console/emta> INFO: dhcp_callback() - DHCP Callback called, Event 0x01: [BRCM_DHCP_CLI_EV_NOOFFERS]
Console/emta> ERROR: DHCP procedure has timed out.
INFO: dhcp_callback() - DHCP Callback called, Event 0x05: [BRCM_DHCP_CLI_EV_LEASE_RELEASED]
Console/emta> DHCP SW length:28

I was interested in knowing what percentage of the the users in this forum, provisioin their cable modems and or eMTAs in one or the other way mentioned below:

1. Specify the cable modem and emta config file in their DHCP Server config or Reservation.
2. Just specifying the TFTP file server name in the DHCP and allowing the CM or eMTA to pickup their respective MAC.xx file from the TFTP server.

Comments on why you choose the way would be a greatly appreciated.

Thanks

hd