Is frame relay a level two protocol?
Frame Relay is in fact a level two protocol. In most cases, Frame Relay is defined as a "packet mode" service, organizing data into individually addressed units, know as frames. This method of organization gives frame relay statistical multiplexing and port sharing characteristics.
Frame Relay eliminates all layer 3 processing, in practice, this means that there is no layer 3 information or functions required in order for a packet to traverse a frame relay network. There are only a few layer 2 functions used, also known as "core aspects". These functions check for a valid and error-free frame but will not request retransmission in the case an error is found.
In today's networks, retransmission and correction are functions performed by higher layer protocols such as TCP, so in the case a frame contains an error, the receiving node is expected to correct the error or request a retransmission. Other higher layer functions can include sequence and acknowledgement numbers, window rotation and more.
When considering all these functions have been stripped out of frame relay, you can expect increases in throughput, as relaying frames will take much less processing. The less overhead and processing a frame requires, the faster it will be able to move through a network.
I hope the above helps answer all your questions.
Dig Deeper on Network protocols and standards
Related Q&A from Chris Partsenidis
Expert Chris Partsenidis explains what iPerf is and how iPerf commands can help you measure your network's bandwidth, delay, jitter and potential for... Continue Reading
SFP ports enable Gigabit switches to connect to a wide variety of fiber and Ethernet cables in order to extend switching functionality throughout the... Continue Reading
Learn how to understand the difference between bit rate and baud rate in this expert answer. Continue Reading
Have a question for an expert?
Please add a title for your question
Get answers from a TechTarget expert on whatever's puzzling you.