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Frame Relay

By mreham ·
I want to know information about the frame relay ,,what it is ??? data transfaring technique??? it's benefits??
so could you please provide me with effective information and helpfull sources??
Thanks laot for every one helps me.

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Frame Relay

by Stillatit In reply to Frame Relay

Frame Relay is a high-speed packet-switched service offered by a number of long distance carriers (AT&T, MCI, Sprint, Qwest, etc.). Frame Relay allows you to connect your sites together. It is typically highly reliable, monitored full-time by the vendor, and fairly expensive.

With Frame Relay, there is a central switching "cloud", but unlike the Internet "cloud" all paths are pre-defined.

There are three parts to the typical Frame Relay bill.

a) You have a circuit from each of your sites to the vendor's point of presence. Typically this is a T1, and you may be using all or it or part of it.

b) You have a "port" which is the maximum bandwidth you can push from that site.

c) You have one or more "pvc's" (private virtual circuits), each of which defines the path from one of your sites to another of your sites.

Depending on vendor, the charges for each piece vary all over the map. Some charge more for the ports, others more for the pvc's. Some tie in a "CIR" (Committed Information Rate), guaranteeing the minimum speed over a particular pvc.

Some vendors will lease you the routers and CSU's, and maintain them at additional cost.

Benefits:
Very reliable. Vendors monitor these networks 24/7.
Speed is typically consistant. Many vendors have more bandwidth in these systems than they need, due to customers moving to cheaper solutions. This means that there is relatively light traffic on this overall network.

Downsides:
Very expensive compared to using an internet vpn. (Typically 2 to 3 X.)
Typically require 2 year contract or longer to avoid large installation charges.
Typically long install times.

Hope this helps.

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