At 04:56 AM 9/7/01, Lupi, Guy wrote:
>When using fast switching, your load sharing is per destination. Lets say
>you have 2 T1s to a router, and it is using fast switching, and you go to
>AOL to download their newest version. Will your download use only 1 T1 due
>to per destination switching?
Yes, that's true unfortunately. But you could use CEF instead of fast
switching.
>If not, how long does the fast cache entry
>stay valid for?
Probably longer than the time between your packets. Let's say it is TCP and
your window size is 8192 and your segment size is 1500 bytes. AOL would
send you about 5 packets and then you would acknowledge and AOL would send
you more. Your ACKs would probably happen faster than the entry for the AOL
destination would leave the fast-switching cache. Not necessarily, but
probably. It would depend on how much other traffic was putting entries in
the cache and how big the cache is.
Priscilla
> Will the router switch paths in the middle of a download?
>Thanks.
>
>Guy H. Lupi
>NOC Engineer
>Eureka GGN
>39 Broadway 19th Floor
>NY, NY 10006
________________________
Priscilla Oppenheimer
http://www.priscilla.com
Message Posted at:
http://www.groupstudy.com/form/read.php?f=7&i=19026&t=18931
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