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Chatter about DOCSIS, provisioning, networks, and CMTS gear.

Casa 3200 Bandwidth Problem

Forums: 

Hi everybody,

we have a Casa 3200 with 24DS (EuroDOCSIS).
Service-group 1: 16DS, 8US
Service-group 2: 8DS, 4US
Fiber uplink 500Mbit/s Down

Now we have the following problem:
We only get around 190Mbit/s per service-group and modem. That mean if we use 2 modems from the service-group 1 we reach about 190Mbit/s in DS per Modem => in sum 380Mbit/s throughput. In our configfile we definite a DS with 500Mbit/s for testing. But this will never reached.

Has anybody an idea?

Thanks

Leon

Docsis Problem.

Forums: 

I'm seeing an odd problem on a Cisco UBR10012 K regarding my EMTA based modems.

I assign the following, 10.10.0.0's to CM only's. 10.20.0.0's to CM portion of EMTA and 10.30.0.0's to MTA portion of EMTA.

ARP timeout is set to 43200 on CMTS (12 hours), DHCP set to 12 hours on EMTA subnet, ARP entry is being expired on the MTA portion, fix is to set DHCP timeout to less than ARP timeout, however I want to actually push these out to weeks, like my CM expiry.

Test with frequencies above 42MHZ, Low SNR

Forums: 

Hi

I am trying to use frequencies higher than 42Mhz in an Upstream port of the CMTS C100G Casa Systems.

Add in my network some Ubee EVW3226 modem that support (5-85Mhz), they have eight bonded downstream channels and
four bonded upstream channels

with AttributeMask in the docsis file I indicate to this cable modem model that it only use the 4 frequencies higher than 42Mhz
In this same port I also use other cable modem models that only support (5 - 42Mhz)

this works fine. I am testing with 7 modem Ubee EVW3226

/30 Subnets for Subscribers?

Forums: 

How do I do this? I'm using a BSR 64000.

My test network has a gateway with a single public IP and static routes for two /24 LANs. One for CPE and one for CMs.

I currently have a single cable bundle with a primary IP for CPE and a secondary IP for modems. The CMTS has 5 slave interfaces which represent my nodes.

I want to get rid of the NAT gateway, and I also don't want all of the CPEs to share a /24 address space — I'd like to create /30 point-to-point networks for each subscriber.

ubee evw32c

Forums: 

I'm looking for a configuration file and firmware upgrade for ubee evw32c

oid smp to check the status of the modem

Forums: 

Hi

I have a software developed in php

I have a novelty now that I am testing with ubee modem, after I restart the modem I can no see the levels to review by snmp because I have no response with the oid 1.3.6.1.2.1.4.1.0

this is the code:

ubr7200 boot config 6490 binary INVALID_MODEM_CONFIGURATION_SETTING_FORMAT

Forums: 

hello guys i got a problem with a test cmts ubr7200
i greate a sample config with docsis utility (github) for docsis 2.0 and same test with excentis .
when i make a binary file and load it on tftp the cmts promt

*Mar 11 04:29:03.386: %UBR7200-4-INVALID_MODEM_CONFIGURATION_SETTING_FORMAT: <133>
CMTS[DOCSIS]:<73011700> Invalid Modem Capabilities configuration setting .
*Mar 11 04:29:03.386: %UBR7200-4-REG_REQ_MSG_SYNTAX_ERROR: <133>
CMTS[DOCSIS]:<73020114> REG REQ rejected - Message syntax error . CM

Looking for mib/oid for d3.1 modem ofdm profile

Forums: 

I'm trying to build a modem query script for our csr's to use to look at some ofdm information.
Right now I have it so entering the ip address of the modem brings up the ofdm rf level, broken into 6mhz chunks, then displays the average mer, as well as deviation of the ofdm carrier. Does anyone know of an oid to query in the modem to display the modulation profile in use? The profile # is all I'm really looking for.
I thought I found one, but after trying it, soon discovered that it is there, but apparently it is hidden.

This is what I'm displaying right now:

Arris and Ubee MTA not working after changing from Hybrid Flow to Basic Flow

Forums: 

Hello,

After changing the provisioning MTA flow from Hybrid Flow to Basic Flow, my Arris and Ubee MTA's are not working. In the other hands, Sagemcom is working properly. I can see in the Arris device, SubOption 7 Authorization method (MTA should get TGT) to FALSE. Is that Okay?

What could be the cause/ Any OID in the configuration file expected or need to be removed?

BR,
AP

Play multicast over CMTS on my laptop

Forums: 

Hi All,

I had read the CASA user guide even I set config on CMTS it can't play multicast.
Does anyone know how to set it?

I want to play multicast on my laptop 2.

Below is my environment and settings.

Environment
=============
LAPTOP 1(VLC Server) --- CMTS(CASA 100G) --- CM -- LAPTOP 2(VLC Client)

CMTS Setting
=============
ip igmp

igmp client version 2

thanks

best regards

Nicki

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