Docsis chat

Hello all,

I hard resetted the modem (CGA2121) and now it can not obain WAN address, altough DOCSIS status showed as ok. I attach the log, probably somebody has an idea what could happen? This is own equippment (not from provider) and I registered it initially in the network. Could it be that some configuration files gone lost after reset and provisioning didn't help? (I asked some on hotline to renew provisioning and the modem rebooted on himseilf).

Appreciate any help, as the provider support (PYUR in Germany) denies support, because it is my own hardware.

Hello guys, I'm new here. We have an FTTH network and want to acquire our competitor, which runs a coax-only setup.

The setup includes a headend and 10 optical nodes (we plan to add 2-3 more to subdivide high-density areas). Currently serving 800 customers, with a 5G fiber pipe planned to feed the entire network.

What CMTS options work best? I initially considered the ATX Pico miniCMTS200a (one per node), then found the Blonder Tongue BT-CMTS-1604-U—maybe just 2 would suffice.

I spotted some Chinese CMTS models too, but I'm wary of them.

I had periodic problems with internet dropouts. Also, only 2 channels of the 4 worked on the Upstream. Cisco EPC3010
Details:

Downstream Channels
Power Level: Signal to Noise Ratio:
Channel 1: 14.4 dBmV 40.8 dB
Channel 2: 14.7 dBmV 39.6 dB
Channel 3: 13.9 dBmV 40.8 dB
Channel 4: 13.3 dBmV 39.4 dB

Upstream Channels
Power Level:
Channel 1: 54.0 dBmV
Channel 2: 52.5 dBmV
Channel 3: 0.0 dBmV
Channel 4: 0.0 dBmV

Hi, I have a Lab casa cmts that is not booting correctly:

casa-2#show system
Product: C2200, Module: SMM
Major rev 1, Minor rev 1
serial_no = SV06BA7S0010
CFE version 2.1.5
System Time: Tue Oct 14 03:57:04 PDT 2025
System Uptime: 0 d, 0 h, 4 m, 41 s
128MHz T1 Clock

Module 0 QAM NotReady

Module 1 UPS NotReady

looks problem happen when system tries to load the BCM chip that controls the 4 gigabiteth interfaces:

Hi everyone,

After replacing the upstream module with a US16x8, everything is working correctly. However, when checking the logs, I noticed the following error reported by the new 16x8 module:

Apparently the HW monitor failed.

Has anyone experienced this issue before?
Should I be concerned about this error, or is it something common/benign?

Thanks in advance for any insights.

Tue Sep 9 03:07:09 2025]-ER-SYS-1: lc5: Slot 5: rpc to perform hw monitor resumed

[Tue Sep 9 03:07:08 2025]-ER-SYS-1: lc5: Slot 5: rpc to perform hw monitor failed

Hello,

I’m working with a BSR64k with SRM10 in a lab environment.
The cable modem has a 1G/100Mb config and is in a 24 downstream bonding group.

- Instead of achieving 1G download, I can only measure around 250–280 Mbps when using a 10G SFP+ uplink.

- However, when I replace the SFP+ with an SFP (1G uplink), I am able to measure 950 Mbps downstream speed behind the cable modem.

I cannot figure out what is causing this issue. I have already tried replacing SFP+ modules with different types, but it didn’t help.

Hello,

I'm wondering if there is a way to "tell" certain modems in the system that they should not use, for example, two downstream frequencies.
All others frequencies can be used.

There are a few modems in the entire area that have problems with mainly two DS frequencies, the majority of the same area has no problems, just a few modems. To avoid disabling these two DS frequencies for the entire area, I'm wondering if this is somehow possible to specify this for individual modems.

Docsis 3.0, CASA C10G.

Thank you very much in advance!

Hi everyone,

I need to replace a module on a Casa Systems C40G CMTS. I'm currently using a US16x4 upstream module and I want to hot-swap it with a US16x8 module.

Has anyone done this before?

Is hot-swapping supported for this type of module?

Will the CMTS automatically load the existing upstream configuration, or will I need to reconfigure everything manually?

Roughly how long does the US16x8 module take to fully boot and become operational?

Recommendations before doing the swap?

Anyone have any luck getting SIP working on a Kaon or Sagemcom modem?

If so can you share the MTA config? Been banging my head for days on these modems.

Thanks!

I have two (out of two) c100G chassis that keep randomly rebooting starting last week. Been running for years previously without issue. Nothing shows up in the log as to why, just running along as normal and then hard resets with 'WA-CLI-1: smm6: cfg_recover_smm():351: pid = 652, tid = 12057, err = Success. start recover SMM configurations ...' being the next log entry.

They both have redundant SMMs and each chassis reboots every time within a minute or two of each other.