What is Layer 4 switching?

Unanswered Question
Feb 15th, 2007

Hello all.

I have a question about Layer 3-4 Switch (for example 3560) and Router (for example 2800). What difference between that device in 3-4 layer? Which one will be faster than other.

3-4 Layer switchinng is it the same that routing?

Thanks.

I have this problem too.
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ahmednaas Thu, 02/15/2007 - 05:21

Layer 3 switching -> routing based on layer 3 info such as source and destination addresses.

Layer 4 switching -> routing decisions are made based on layer 4-7 info (Application type, content type).

Francois Tallet Thu, 02/15/2007 - 09:40

yes, and the difference between a L3 switch and a router is rather marketing afaik - switch being already a marketing term for bridge;-)

F.

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