Metro Ethernet over Docsis

>Can anyone explain if i can really get a garantued dabit with this kind of technologie?

Depends on the provider. I'm sure you can get some type of SLA from the providers.

>What are the function of services like E-Line and E-Lan

E-Line would be an alternative to a point-to-point service such as a T-1 line.

E-LAN would be an alternative to a multipoint service such as Frame-Relay.

thanks for the answer!

But in a T1 Line, which is ussually over copper, don't i have garantued Debit?
In Cable networks i think this doesnt happen!

>But in a T1 Line, which is ussually over copper, don't i have garantued Debit?

Do you mean "guaranteed data rate"??? If so then basically, yes. You have 1.5mbps of bandwidth.

>In Cable networks i think this doesnt happen!

For most consumers of cable internet access, this is true. There are no guaranteed data rates. But that doesn't mean it can't be done. It's just that most consumers of home cable internet access products aren't interested in the cost of a guaranteed data rate.

Yes, understand but in the case of corporate users. Access for Business ?

Right. Cable providers offer things like guaranteed bandwidth, uptime, minimal outages, etc. An SLA.

http://en.wikipedia.org/wiki/Service_level_agreement

 

Ok, SLA, but how can i achieve those SLA's in cable ??

You contact your provider and ask what they have to offer.

I'm trying to understand the technologie! I'm the provider

Oh...

It's just a matter of QOS (or more specifically,  rate limiting). Of course, this assumes that you haven't oversubscribed the service. :-)

So for instance, for instance in ADSL i can have contention rates of 1:1 , with metro ethernet over docsis i can achieve certain a performance assured line by implementing QoS live CIR CBS etc ?

That is correct.

But which NE will implement those  QoS ?  The CPE? The CMTS? In the Backbone?

So to resume, what's after all the benefict of having Ethenet over Docsis solution implemented over traditional Cable?

What do you mean by "traditional cable"?

sorry, copper lines, like DSL

Not to be anal, but it's almost all copper. ATM, T1, DSL, Cable.

Now if you mean specifically DSL...

DSL is distance limited. ~14,000 feet. And once you're out to distance, the bandwidth degrades. Someone that's 2,000' from the CO may get 8mbps while someone that's 12,000' can only get 1mbps. DSL bandwidth maxes out around 10mbps.

ME will work at whatever the max media rate is (100mbps is not unheard of) and will operate at max speed at whatever the working distance is.