Docsis chat

Hello,

Is there a way to trace all the provisionning sequence (dhcp,tftp, mta, etc..) from the CMTS ? or a tool to follow the differnt request from the cmts to the others device of the network and from the others device to the cmts (modem, mta, cpe ...).
How to do ?
And is there a document to be sure that anything is missing when a cmts configuration is finished ?

Thank you for your help !

Have seen a few references to home grown php frontends for docsis-server here in the forum,
but no actual links to any resources for same. Anyone have anything worthwhile developed that
they would be willing to share? Webmin and phpMyAdmin just seem very klunky for simple tasks
like adding or modifying modems, etc. Many thanks in advance for any assistance.

Kind regards,

psmit (poge at oberlin dot net)

Unable To Get IP Address For CM

I have a test bed with BSR64000 and Motorola SB6120 cable modems.The DHCP server is Cisco CNR 7.0 running on Solaris 10.0.When I checked the DHCP logs I am getting requests from Cable modem ,DHCP server is generating the configuration but DHCP offer is not reaching to cable modem.I used Wireshark to analyze the traffic ,what I noticed was, there was no DHCP offer packet being put on ethernet by DHCP server although application has generated the DHCP address.

Following are the details about my setup:
DHCP Server IP:10.255.8.130

Hi there,

we have a Arris Cadant C4 and Arris CM550A cable modems running docsis 2.0 standard

the problem is that we never get upload speeds over 1,8 mbit but download speed is very good 36Mbit.

test for 3,2Mhz-6,4Mhz channel-width and QPSK, QAM16, QAM64 modulation and lots of modem config but nothing result.

are not users it upstream. Upstream MER: 33dB, no errors.

I currently C4 config:
cable modulation-profile 5 iuc 1 mod qpsk pre-len 64 diff false fec-tbytes 0 fec-len 16 seed 338 burst-len 0 guard-time-size 8 last-cw false scrambler true docsis-mode atdma

Hi,

it seems I cannot make my eMTA to work. On cmts, I cannot create dynamic service flows, so the call is just dropped.

Can anyone help me, please!

Best regards, Mile

Hello,

I need Help to configure an ubrvxr7246 (12.3 21a BC3).

IP routeur headend (X.X.X.1) Public address : I have no access on it.

IP UBR X.X.X.2 Public address (interface gigabit0/1)
IP BUNDLE 1 for interface cable3/0
X.X.Y.1 public address scope for host internet
10.10.0.1 private address secondary scope for mta
172.10.0.1 private address secondary scope for cm

I would like to ping (extended) X.X.X.1 routeur headend from 10.10.0.1 and i can't.

Hi, I`m from argentina and want to set up my hfc network as described bellow, can you tell me if that it`s possible?

* Speed for internet access goes from 128 kbps to 512 kbps
* now the dream: it's possible to set up another speed for the local
network? ie: no speed limit or 1 mbps for internal ftp, gaming, or
any other transfers

1. If is possible, how to do it?
2. Where must set the second speed? (i was testing a ftp, but the
speed for transfers never pass the speed of the binary)
3. It is certain that there will need to add packet processing

I am having trouble (and have no idea except parsing DHCP server's log - but this seems to be too slow and buggy) with getting the CM's assigned IP address. I have DHCP server running on the same machine where the provisioning sw runs, IP addresses are assigned dynamically.

I have the MAC address of course.

TIA

Hello,

Any one using ISC DHCPserver 3.1 and Cisco CMTS and are using DHCP lease-query ?
We cant get it to work :-/

It seems like Cisco CMTS isnt using RFC 4388 standard.

--
http://www.cisco.com/en/US/docs/ios/ipa ... #wp1034751

Usage Guidelines

Some DHCP servers support only the RFC 4388 standard of lease query. If the DHCP server supports only the RFC 4388 standard, then you must configure the DHCP client to send a lease query according to the RFC 4388 standard.

Hi,

Please could someone help me to configure NAT for the MTA RANGE to reach ONLY DNS (PUBLIC IP X.X.X.Y) THIS DNS is behind a router that i don't have the control.

Here is an extract of the config
!
ip cef
ip dhcp relay information option
!
ip dhcp-server X.X.X.3 // PUBLIC IP
!

interface GigabitEthernet0/1
ip address X.X.X.X 255.255.255.240 //PUBLIC IP
duplex auto
speed auto
media-type rj45
negotiation auto
!
!
interface Bundle1
ip address Y.Y.232.1 255.255.252.0 secondary // PUBLIC IP FOR CPE