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NigelRobson
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January 28th, 2008 08:00
Fast Link?
Hi all, currently on our 6248 switches we don't have fast link enabled but do use STP. can anyone one give a rough estimate how much improvement there would be in a link connecting if i turned this feature on? i know this might be hard to tell but any estimate would be good many thanks Nigel
NigelRobson
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Posted January 29th, 2008 13:00
why only on edge devices? what do you mean by edge? last year we added Exchange 2003 to our network and i was having issues with it. when it booted some of the Exschange services would not start and had to be done manually. when i enabled fast link on this port the problem disappered NigelNigelRobson
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Posted January 29th, 2008 14:00
great - i was hoping you would say computers. so by enabling this i would think boot time of PCs on our domain would improve too, as the network would be found and connected quicker. would you agree?sentinel-master
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Posted February 3rd, 2008 11:00
The ability for the network switch to forward "user traffic" from your client PC or host sooner than 45secs which is standard spanning tree (L2 switch sequence of device contect : learning -> listening -> forwarding).
By using fastlink (or also known as portfast) you skip the learning, listening stages and hence speed up access to the network.
Caveats : Only use for PC ,Server device........not meant for router --> switch, or switch --> switch conenctions, because you could cause a broadcast storm. In normal SPT stages the port would "listen" for BPDU's (Bridge Protocol Data Units) to ensure a loop free topology - and only going into forwarding mode if safe to do so.
Hence must be a PC or server - as you are the decision point now !!
As long as you PC/Server IP stack and application build are well organised you sholud be able to access the netwotk straight away.
drgnslyr
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Posted January 29th, 2008 13:00