capping cable modem

[benjamit]

are the modems that you buy already capped or does the isp s/w cap the connection?

i use rr and they were letting people use this 3 com 'shark fin' ext modem but when i moved and started a new contract, b/c free month connection for new accounts, they out sourced some of their installs

i got one of the out sourced installs but instead of the same modem or of similar quality they gave me a low end rca one

i'm surprised that this modem goes for over a $100

also does any body know who sells the 3 com home connect 'fin' ?

directron does but i wonder if their price is really the going price for such a modem since all of their cable modems seemed over priced

 

[benjamit]

are those 'fin' modems discontinued?

 

[Sukhoi]

DOCSIS modems are capped at the modem by the ISP AFAIK.

 

[benjamit]

what's AFAIK?

 

[bozo1]

as
far
as
I
know

 

[Mje]

AFAIK When the connection is negotiated with the isp, the isp sends the info to the modem on your cap. The modem does the traffic shaping. As long as the modem is compatible with your cable network, it will work.

 

[tritium4ever]

LOL Mje stop spreading your lies and misinformation!!

 

[benjamit]

thanks for the replies but i found out the hard way that rr does not allow customers to use their own modems

they say that they don't want to take responsibilty for the h/w of the modem

i asked them if there was a waiver that i could sign and they said they just don't do it

so i'll have to return the linksys that i have now and get a replacement owned by rr

 

[dexter333]

Actually, with DOCSIS modems, the capping is done in the modem. When the cable modem synchronizes with the network it retrieves an ip from the bootp/dhcp server. Along with that IP it retrieves the name of the modem configuration file. The modem then uses tftp to retrieve that file from the bootp/dhcp server. Then the modem applies those settings. Here is output from DOCSdiag on my cable modem that shows my 3mbit down/300kbps upload cap:

C:\DOCUME~1\Administrator\Desktop>jview /cp docsdiag.jar docsdiag -cmip 192.168.100.1
DocsDiag v020324 Copyright 2001-2 Robin Walker rdhw@cam.ac.uk

General Instrument SB3100 Cable Modem: Hardware version: 1; OS: VxWorks 5.3.1; Software version: 3.2.3p

Downstream channel ID = 0
Downstream channel frequency = 591000000 Hz
Downstream received signal power = 0.0 dBmV (or not supported)
Upstream channel ID = 2
Upstream channel frequency = 34384000 Hz
QoS max upstream bandwidth = 300000 bps
QoS max downstream bandwidth = 3000000 bps
SigQu: Signal to Noise Ratio = 32.2 dB
Cable modem status = Registration complete
Upstream transmit signal power = 53.0 dBmV
Date and Time = 2002-04-08,19:55:01.00-05:00
Configuration filename = DEF001.cfg

C:\DOCUME~1\Administrator\Desktop>