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iansltx

join:2007-02-19
Austin, TX
kudos:2
Reviews:
·Time Warner Cable
·Verizon Online DSL
·Comcast

Looks like people are having issues

From the thread, it appears as though either the node or the modem are falling out of sync and only lighting up one channel instead of the three or so required to get a nice 40 Mbps DOCSIS 3.0 tier. So people are seeing closer to 20-30 Mbps, which is to be expected on a single DOCSIS channel but nowhere near the 40 Mbps that RR Lightning promises.

5 Mbps upstream is no problem though; there's only one channel there anyway.



Grimm43
You Never Hear The One That Kills You
Premium
join:2000-11-02
Largo, FL

Agreed, my installation was a nightmare.

So much so that I decided to go back to my original 30/2mbps speeds and drop Lightning until it is ready for prime time.



DrDrew
That others may surf
Premium
join:2009-01-28
SoCal
kudos:15
reply to iansltx

Nodes in cable systems are just media converters changing light to RF and back. They can't "fall out of sync".

Maybe you mean the CMTS???


iansltx

join:2007-02-19
Austin, TX
kudos:2

Last I checked the CMTS is the node. *shrugs*



DrDrew
That others may surf
Premium
join:2009-01-28
SoCal
kudos:15

1 edit

1 recommendation

CMTS is a network device in the cable headend.

A node is a outdoor device hanging on the strand from the utility pole or in a ground mounted pedestal. Again it converts the signals from the optical cable to the hardline RF cable.

A single CMTS can connect to 10s or 100s of nodes. 10s or 100s of homes are serviced by 1 node.

Nodes don't show up in trace routes from cable customers, CMTSs do.

A node can't be overloaded, a CMTS can.

A node doesn't sync with a modem, a CMTS does.

A node carries the full bandwidth signal being broadcast to a neighborhood. A CMTS just handles the upstream and downstream data channels needed for cable modems to connect.

There are many other differences.


iansltx

join:2007-02-19
Austin, TX
kudos:2

Got it. THere's a more technical name for a node though right?



DrDrew
That others may surf
Premium
join:2009-01-28
SoCal
kudos:15


Arris C4 CMTS
 

Arris 4100 node
said by iansltx:

Got it. THere's a more technical name for a node though right?
Nope. It's a Node.

Here's a manual for the Arris 4100 node pictured above:
»www.arrisi.com/product_catalog/_···0308.pdf

Here's the product page for the Arris C4 CMTS pictured above:
»www.arrisi.com/products/c4/index.asp