Date: Thu, 15 Feb 2007 12:16:39 +1100 From: "Dimuthu Parussalla" <dparussalla@baysidegrp.com.au> To: "'Glen Van Lehn'" <gvanlehn@ccsf.edu>, <freebsd-stable@freebsd.org> Subject: RE: Intermittent network issues with Freebsd 6.2 Message-ID: <007401c7509e$f2d0e620$d801a8c0@dimuthu> In-Reply-To: <s5d31619.015@bat-gwpo.ccsf.edu>
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Hi Glen, I did that already and it works for few days and dropping out. now I have change network cards to Intel (em). Hopefully this will solve the issue. Cheers, Dimuthu -----Original Message----- From: Glen Van Lehn [mailto:gvanlehn@ccsf.edu] Sent: Thursday, 15 February 2007 9:01 AM To: dparussalla@baysidegrp.com.au; freebsd-stable@freebsd.org Subject: Re: Intermittent network issues with Freebsd 6.2 >>> "Dimuthu Parussalla" <dparussalla@baysidegrp.com.au> 02/11/07 3:54 PM >>> Hi All, I am having intermittent network issues with our IBM X236 dual xeon server. Server comes with two bge network cards. At random intervals internal lan drops out. And then few minutes later it comes back online. So far I can only find some interface errors on netstat -i. Can anyone help me to resolve this issue. Please refer to attached files and below outputs for more information. /etc/sysctl.conf kern.ipc.maxsockbuf=8388608 kern.ipc.somaxconn=2048 net.inet.tcp.sendspace=3217968 net.inet.tcp.recvspace=3217968 net.inet.tcp.rfc1323=1 #net.inet.tcp.rfc3042=0 net.inet.ip.portrange.hilast=65535 net.inet.ip.portrange.hifirst=49152 net.inet.ip.portrange.last=65535 net.inet.ip.portrange.first=1024 net.inet.tcp.inflight.enable=0 /boot/loader.conf kern.ipc.nmbclusters=32768 vmstat -i interrupt total rate irq52: ips0 75446 17 irq30: ahd0 81 0 irq31: ahd1 15 0 irq1: atkbd0 69 0 irq3: sio1 74 0 irq4: sio0 67 0 irq6: fdc0 90 0 irq14: ata0 47 0 irq16: bge0 bge1+ 1395326 315 irq19: uhci1 15 0 irq23: ehci0 1 0 cpu0: timer 8845847 1998 cpu3: timer 1 0 cpu1: timer 2 0 cpu2: timer 8830658 1995 Total 19147739 4326 netstat -i Name Mtu Network Address Ipkts Ierrs Opkts Oerrs Coll bge0 1500 <Link#1> 00:11:25:e9:7f:58 392325 880 449420 0 0 bge0 1500 192.168.1 lan 342652 - 4175 - - bge1 1500 <Link#2> 00:11:25:e9:7f:59 369744 1648 363688 0 0 Regards Dimuthu Parussalla ============================== Do you have access to the network switch that your server connects to? The stats on the port may show CRC errors or the log may show carrier off/on transitions indicating that 'Auto-negotiation' isn't stable. I've seen this a lot with 100FDx connections and a few times with GbE. Sometimes it helps to change the port speed/duplex settings from 'Auto' to <fixed whatever> [or vice versa ;]. My preference has been to use 'Auto' if it works, and, if it doesn't, to nail down the server settings, then see whether nailing the switch port setting or leaving the switch port in 'Auto' is best. ymmv, glen van lehn city college san francisco
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