Verner Kjærsgaard schrieb: > > Alkis Georgopoulos skrev: >> Στις 12-01-2010, ημέρα Τρι, και ώρα 12:30 -0700, ο/η David Burgess >> έγραψε: >>> On Tue, Jan 12, 2010 at 12:18 PM, Alkis Georgopoulos <alk...@gmail.com> >>> wrote: >>> >>>> See also https://help.ubuntu.com/community/UbuntuLTSP/FlowControl for a >>>> possible problem with mixed-speed networks that may gravely affect >>>> perfomance. >>> Flow control is a problem when you have mixed media speeds sharing a >>> server. and without a gbit switch port for the server, flow control is >>> not likely to be an issue, and each subnet will cruise along at up to >>> (!)100 mbps. >> I think the poster said that he has a mixed mode network: >> >> "- I've got 4 24-port switches that connects to all the clients. 100Mbit >> ports to the clients, 1000Mbit to the server." >> >> > > Hi again, > - a few more facts. > > Well, I've not got 100 clients but someting like 70 or so. They don't > run at the same time, perhaps 20 - 20 are active at the same time. The > swithes in use are 24 port swithes, hence the need for distributing > properly. > > I think the solution is to opt for the only real correct one...get new > switches that are NOT 1000/100 switches, but rather 1000/1000 switches... > > This way the switches may be uplinked together properly. I'm quite > convinced that the servers 1000Mbit netcard (just one) will handle the > traffic just fine.
Those switches really have 24 100Mbit ports and only one 1000Mbit port? Sick. But then an additional 5 port (cheap!) 1000Mbit switch would solve the problem, too. > > This whole exercise was meant to (possibly) avoid buying new switches > and solve the issue by software/configuration/bonding/bridging/whateever :-) As Alkis pointed out, this would work, too. > Still, this thread was very helpful! > > - a perfect solution would be a powerfull managed switch which accepts > bonding. Then use TWO 1000Mbit cables from the servers two 1000Mbit > ports to this ONE master switch (that supports bonding). This way, one > would make absolutely sure that this first superswitch would get ample > suplly from the bit-bucket :-) > > Right? Yes. There even have been reports on this list that a normal unmanaged switch will work well when used with linux bonding (doubles the server send bandwidth, while receive stays the same as the switch sends only to one port at a time). Jakob ------------------------------------------------------------------------------ This SF.Net email is sponsored by the Verizon Developer Community Take advantage of Verizon's best-in-class app development support A streamlined, 14 day to market process makes app distribution fast and easy Join now and get one step closer to millions of Verizon customers http://p.sf.net/sfu/verizon-dev2dev _____________________________________________________________________ Ltsp-discuss mailing list. To un-subscribe, or change prefs, goto: https://lists.sourceforge.net/lists/listinfo/ltsp-discuss For additional LTSP help, try #ltsp channel on irc.freenode.net
