Hello, I have a cluster, master + 8 nodes, connected via a Netgear Gigabit Ethernet Switch (model JGS516). The cables are of CAT5 type. Elsewhere I read that for a gigabit network, one should use CAT6 type cables, to avoid bad transmissions. Is that so? I already have done basic speed checks, that indicate a throughput of about 0.5 Gbps. Hence the network appears to operate on half of its spec. speed. Question 1: Should I worry about this reduced speed? Question 2: How to check the transmission quality? Should I inspect the output of "/sbin/ifconfig eth0" for errors/dropped/overruns/collisions etc. in the RX/TX lines? Lan card info: master: Tigon3 10/100/1000BaseT Ethernet tg3: eth0: Link is up at 1000 Mbps, full duplex. tg3: eth0: Flow control is on for TX and on for RX. nodes: Realtek RTL8169 eth0: Auto-negotiation Enabled. eth0: 1000Mbps Full-duplex operation. Thanks for advice and help! Rob. __________________________________________________ Do You Yahoo!? Tired of spam? Yahoo! Mail has the best spam protection around http://mail.yahoo.com
