purpose of aggregation switch

c_hockland
c_hockland used Ask the Experts™
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hi,
i am reading an article about an internet host provider and they are using aggregation switches when they build racks. What is the purpose of the aggregation switch ?
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Basically to parrallel the connection.  THis increases performance and provides redundancy.   So if you had one switch blow up you would still have the connection to another switch.  If both switches it is connected to is running you gain performance.

Author

Commented:
and do i need a special type or it can be any cisco switch ?
are they connected with fiber ?
mikecrIT Architect/Technology Delivery Manager
Commented:
Port aggregation on a Cisco switch is called etherchannel. This is where bond ports together into a virtual interface. Not only do you get the combined bandwidth of all the ports but you get redundancy because if a switchport fails,  you don't miss a beat. Almost all Cisco switches support this and it can be done with fiber, absolutely. Just put in the GBICs and bond the interfaces together.

Author

Commented:
thanks both. Makes sense.

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