I have single site with 3x 3750 stacks where around 100 users and one fileserver connected (all using 100Mbps) We have issues where a user might be copying a large file to a file server which effectively slows down all other user access to the fileserver. What will be a best way of implementing QOS so users get equally share of bandwidth?
Thanks for your comment. I can confirm user and server are in diffrent vlan. Issues occurs e.g. when user A in vlan 10 on port fa1/10 copies a 10gb file to file server in vlan 20 on port fa1/20. During the file transfer fa1/20 port is utilized 100% during the file transfer. This mean when a user B on port fa1/11 on vlan 10 tries to access files on the server it is either not repsoding or very slow. All the server port bandwith is used by user A. Is there a way i can loadbalance bandwith when 2 users connect to file server on port fa1/20 it assigns them 50/50 of the 100Mbps or when 10 users connect 100 divide 10 = 10mb per user?
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The 3750's QoS implementation doesn't support an easy method to fairly share bandwidth. You could police user ports such that when they exceed a certain amount of bandwidth usage to the server, mark those packets so they can be deprioritized on the port to the server.
Another approach to avoid this issue is increase bandwidth to your server. If any of your 3750s have gig uplink ports, and if your server has a gig interface, you might migrate to gig. Also if your server has multiple ports, whether FE or gig, you might see if the server supports any kind of port channeling.
Hi everyone, I would like to thank you in advance for any help you can provide a newcomer like myself!
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