Docsis chat

Hi list,

I've a very strange problem. I was trying to set 3 different TLVs in CM config file like the below:

VendorSpecific
{
VendorIdentifier 0x000304; ( Juniper CMTS)
GenericTLV TlvCode 1 TlvLength 2 TlvValue 0x0259; (VLAN 601)

VendorSpecific
{
VendorIdentifier 0x0000ca; (Arris CMTS)
GenericTLV TlvCode 1 TlvLength 2 TlvValue 0x0259; (VLAN 601)

i try to configure scdam on C3 cardan but i don't have a good result. Below the message i obtain when trying to configure docsis 2.0:

C3#
C3#conf ter
C3(config)#int c1/0
C3(config-if)#cab
C3(config-if)#cable up
C3(config-if)#cable upstream 0.0 ch
C3(config-if)#cable upstream 0.0 channel-ty
C3(config-if)#cable upstream 0.0 channel-type s
C3(config-if)#cable upstream 0.0 channel-type scdma
SCDMA not currently licensed - contact Arris support
SET for US channel type failed

Hi all ...

I was wondering if there's a way on reseting the modem devices in a catv network. Googling a lil got me over .1.3.6.1.2.1.69.1.1.3 ... so .. I tried doing this ... I'm the administrator of the dhcp server .. so I can create new boot files for the modems and stuff ..

snmpset -v2c -r1 -c public 10.0.0.240 .1.3.6.1.2.1.69.1.1.3 i 1
Error in packet.
Reason: notWritable (That object does not support modification)
Failed object: SNMPv2-SMI::mib-2.69.1.1.3

figured that the "public" community isn't allowed to write .. ok .. question is:

Hi!

We using some DOCSIS 2.0 CMTS, Arris C3 and Terayon. The problem is, we are not limiting the UDP traffic behind the cable modem.
Example:
If we setting the max downstream speed in the cable modem configuration file 4048000 Bit/Sec when the TCP traffic is about ok. But if we try the iperf with UDP option (UDP server - UDP clients) the UDP traffic is 30MBit/Sec!

Please help me anybody, how can I limit the UDP traffic!

THX...

Sorry my poor english.

gyu

Hello,
Anybody experienced such transitions (bridging -> routing or routing -> bridging) for a cmts? I would like to have some impressions.
I just replaced a npe-400 with a npe-g1 and I think i can further reduce the processor load by putting the cmts in bridging mode.
For an ubr7246vxr with a npe-g1 I have about 43% processor load at peak hours.
1800 modems, speeds from (up/down) 128/512 to 256/2048.

thanks

OS: RH9.0
DB: mysql3.x
docsis_server: 2.0.4

When i startup docsis_server, it can't run, and hit
"docsis_server: error while loading shared libraries: libmysqlclient.so.10: cannot open shared object file: No such file or directory".

libmysqlclient library were pathed in /usr/lib/mysql/. Is path wrong?

Thanks and Best wishes!

Can anyone recommend what DOCSIS2.0 CMTS is a good one to purchase for lab use where we will only connect 10-20 devices max?

Also, pls help recommend where we can find one if you happen to know.

Thanks a lot.

Hi all,

I would like to ask somebody who has a long experience working in cable ISP. I just wanted to know some general numbers like:

- How many fiber nodes per CMTS upstream port you have connected?
- How many ports (home passed) per nodes you have connected? , and
- What kind of technology for upstream combining and splitting you are using; do you use any Return Path Multiplexer (RPM)?

I appreciate your help on these questions.

Best Regards,
Astrit

I am in the process of replacing our TFTP servers. They run Linux (Fedora) and tftp-hpa. We have a bunch of Toshiba cable modems on our network (PCX1100U) and these modems can't download the config files on the new severs. All other modems can.

I have tried other tftp servers such as atftp and tftpserver. No matter what I do the Toshiba's won't download their config files. Through logging this appears to be a timeout issue. I've tried adjusting the timeout value but it doesn't make a difference.

Where can I find detailed documentation for docsis 1.1 config file options.

Does "ClassifierRef" option must be unique per config file per cmts.

Example I have config files 1024.cfg and 2048.cfg.

In 1024.cfg I have ClassifierRef 15 for US and ClassifierRef 16 for DS
Can I have same ClassifierRef values in 2048.cfg?