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edited Jan 20, 2018 at 16:57

Ron Trunk

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What problem solvesdoes Frame Relay or ATM solve that Ethernet does not solve Ethernet?

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asked Jan 20, 2018 at 15:27

T.G.

What problem solves Frame Relay or ATM that does not solve Ethernet?

Frame Relay is a technology that exists from 1988 (more or less). Ethernet is older (mid 70's).

Why we classify as a WAN technology Frame Relay if Ethernet can do the same (and even better!)?

As far as I understand, with ATM it's almost the same...

I really don't understand the use of Frame Relay or ATM to interconnect two networks in the WAN world because we can do it with Ethernet connections (i.e. a L2 Ethernet switch).

It is because the need of being able to transmit both voice and data and the time-frame of this technologies?

If I need to connect two IP LANs I would do it using a router or a switch so... why these technologies? What is changing if I need to connect two networks in the "WAN world"?