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Tudor Davies
Tudor is a techie turned manager who fights like mad to keep his tech skills honed and relevant. Everything from web hosting, networking, *nix and the like. Constantly developing and co-ordinating with others to make the web a better (and easier to use) place.
Monday, 13th Dec 2010
Posted @ 14:55
So I have had Gigabit capable servers for some time but have never been able to afford a decent Gigabit switch. Right now, I run a Cisco 3524XL switch (10/100) but moving to that level of Gigabit switch is expensive - even on the 2ndhand market.
Anyway, I saw that Amazon were selling the unmanaged, basic-as-it-can-be TP-Link TL-5G1005D for £13 or so. 5 ports of GigE speed and has 9K jumbo frame support.
So I jumped onto each of my servers and configured (CentOS) their secondary network interfaces onto a new network (10.0.0.x/24), added the line MTU 9000 to the ifcfg-ethx in /etc/sysconfig/network-scripts, plugged the switch in and did an ifup ethx on each of them.
Everything came up and they could all ping each other. So I fired up iperf on one of them (using -B 10.0.0.x to bind it to the new interface) and then tested from the others. The result:
922 Mbits/sec
Sweet! I then did multiple tests at once and averaged about 1500 Mbits/sec across the switch. Still plenty fast enough for what I need it for, as I doubt they will ever be doing sustained transfers at the same time.
Next up, rebuilding my MaxAttach 4300 with 1.4Tb of storage with FreeNAS and then sharing it using NFS to the 3 servers :)
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