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BloodRoses
Aeolus, your daughter flies.
Premium
join:2003-03-17
Louisville, KY

reply to Digifalls

Re: Hope Virgin Media isn't blowing smoke

said by Digifalls :

He provisioned himself at 10 meg up/ down. (Docsis 2.0 still) and he was crushing he CMTS he was off of. THis caused a ripple effect that hurt like 1000 peoples connections when he fired his up.
I have BS flags going up all over the place on this. In a DOCSIS 2.0 system the customers speed is provisioned at the CMTS, which is why most modems now do not report the SNMP string in the diagnostic pages. Second off, I sincerely hope your company did not pass 1000 customers on a 10 Megabit line. In fact, I know this to not be the case, and flat out impossible. a typical RoadRunner node in Central Ohio in 1997 would have, let's say 12 burstable ATM's, at 100 Megabits each. So one 10 Megabit customer would take out a 1200 Megabit node? I don't think so. No wonder @home went out of business, good grief.
--
Faerie Blessings,
Stephanie - www.GlitterFaerie.net


nukscull

@rr.com

Speed is not provisioned at the CMTS, it is sent down in a bin file to the modem. The CMTS has no control over individual modem speeds.

Unless you're loading the bin file directly from the CMTS to the modem, which is still the bin file controlling the speed of the modem.

Also, a node on a cable system is not the same as a node you just described. A node is an HFC device supplying a neighborhood, probably 150 - 200 customers, and not just Internet, the node also is where the TV signal comes over as well. This node connects to an upstream on a CMTS at 10mbit/sec. And can have its own 45mbit downstream, or share that downstream with 2 to 8 nodes depending on the CMTS configuration.



Ignite
Premium,VIP
join:2004-03-18
UK

said by nukscull :

Speed is not provisioned at the CMTS, it is sent down in a bin file to the modem. The CMTS has no control over individual modem speeds.

Unless you're loading the bin file directly from the CMTS to the modem, which is still the bin file controlling the speed of the modem.

Also, a node on a cable system is not the same as a node you just described. A node is an HFC device supplying a neighborhood, probably 150 - 200 customers, and not just Internet, the node also is where the TV signal comes over as well. This node connects to an upstream on a CMTS at 10mbit/sec. And can have its own 45mbit downstream, or share that downstream with 2 to 8 nodes depending on the CMTS configuration.
Hrm nope since DOCSIS 1.1 speeds are provisioned at the CMTS as service flows and indeed can be and are policed there. You can even police speeds over DOCSIS 1.0 - how do you think Powerboost and STM throttling works?

I could explain how the hack works around this system but I'd rather not, let's just say Cisco have some bug fixing to do...

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