Bandwidth Assumption

5 pts.
Tags:
WAN
WAN bandwidth
Web-based access
We are developing a network questionnaire for an Application that is about to be develp. We want to get or give our client a ballpark figure of the amount of bandwidth they gonna be needing in order that their application specifically web based application will perfrom efficiently over the WAN.

Remember that the application is just about to be develop, out of this questions will come out variables to formulate formula to compute the bandwidth.

 



Software/Hardware used:
Web based applications

Answer Wiki

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You will need information like:
bytes per transaction type
number of transaction types per user
number of users performing transaction type(s)
how many transaction type(s) performed per minute or per hour
available link capacity at source & destination

Another way of saying this: transaction type X consumes Y kilobits/sec for Z seconds. There will be R number of these types of transactions per min/hr/day. There are J number of users performing these transactions

Remember that transactions across a WAN will be affected by:
Link congestion
latency or delay
packet loss
link availability

Latency or delay can be caused by:
distance between client and server
serialization of putting the packets on the line
device queueing
forwarding delays
protocol type(s)

Of course, application performance is also affected by client and server resources (memory, disk, processor).

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