Metro Ethernet over Docsis

While reading the following document:
http://www.cisco.com/en/US/solutions/collateral/ns341/ns522/ns3/metro_ethernet_white_paper.pdf

I'm still trying to understand what they mean!
Can anyone explain if i can really get a garantued dabit with this kind of technologie?

What are the function of services like E-Line and E-Lan
xtofptAsked:
Who is Participating?
 
Don JohnstonInstructorCommented:
You could implement on any of the equipment that supports it (that you have control over).
0
 
Don JohnstonInstructorCommented:
>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.
0
 
xtofptAuthor Commented:
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!
0
WEBINAR: 10 Easy Ways to Lose a Password

Join us on June 27th at 8 am PDT to learn about the methods that hackers use to lift real, working credentials from even the most security-savvy employees. We'll cover the importance of multi-factor authentication and how these solutions can better protect your business!

 
Don JohnstonInstructorCommented:
>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.
0
 
xtofptAuthor Commented:
Yes, understand but in the case of corporate users. Access for Business ?
0
 
Don JohnstonInstructorCommented:
Right. Cable providers offer things like guaranteed bandwidth, uptime, minimal outages, etc. An SLA.

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

 
0
 
xtofptAuthor Commented:
Ok, SLA, but how can i achieve those SLA's in cable ??
0
 
Don JohnstonInstructorCommented:
You contact your provider and ask what they have to offer.
0
 
xtofptAuthor Commented:
I'm trying to understand the technologie! I'm the provider
0
 
Don JohnstonInstructorCommented:
Oh...

It's just a matter of QOS (or more specifically,  rate limiting). Of course, this assumes that you haven't oversubscribed the service. :-)
0
 
xtofptAuthor Commented:
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 ?
0
 
Don JohnstonInstructorCommented:
That is correct.
0
 
xtofptAuthor Commented:
But which NE will implement those  QoS ?  The CPE? The CMTS? In the Backbone?
0
 
xtofptAuthor Commented:
So to resume, what's after all the benefict of having Ethenet over Docsis solution implemented over traditional Cable?
0
 
Don JohnstonInstructorCommented:
What do you mean by "traditional cable"?
0
 
xtofptAuthor Commented:
sorry, copper lines, like DSL
0
 
Don JohnstonInstructorCommented:
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.

0
Question has a verified solution.

Are you are experiencing a similar issue? Get a personalized answer when you ask a related question.

Have a better answer? Share it in a comment.

All Courses

From novice to tech pro — start learning today.