Re: Loosing Ethernet Connectivity
Check your card's firmware, most by default are set to sleep on inactivity. Make sure your's isn't set to do this. -Derek At 09:12 PM 1/21/2007, David Schulz wrote: Hello all, every once in a while i have a machine (6.1) that out of the blue, sometimes after days, some after 6 months, looses Ethernet Connectivity. My Machines just run some Service, and have no Keyboard / Mouse or Monitor. When the Machine goes down, eg, i am unable to ping it from another Machine on the Network, even restarting the machine using reboot will not fix the Problem. The only way to fix it is to login as root, and issue a ifconfig vr0 down ifconfig vr0 up. Then a dmesg Message appears : vr0: Using force reset command., and after that i can successfully ping the machine again. I have had this Problem on different machines with different Network Cards, on different Ethernet Cables, and with FreeBSD Versions 5.5 until 6.1. Can anyone please help me to understand and possibly even fix this Problem? Thanks a lot, David ___ freebsd-questions@freebsd.org mailing list http://lists.freebsd.org/mailman/listinfo/freebsd-questions To unsubscribe, send any mail to [EMAIL PROTECTED] -- This message has been scanned for viruses and dangerous content by MailScanner, and is believed to be clean. MailScanner thanks transtec Computers for their support. -- This message has been scanned for viruses and dangerous content by MailScanner, and is believed to be clean. MailScanner thanks transtec Computers for their support. ___ freebsd-questions@freebsd.org mailing list http://lists.freebsd.org/mailman/listinfo/freebsd-questions To unsubscribe, send any mail to [EMAIL PROTECTED]
Loosing Ethernet Connectivity
Hello all, every once in a while i have a machine (6.1) that out of the blue, sometimes after days, some after 6 months, looses Ethernet Connectivity. My Machines just run some Service, and have no Keyboard / Mouse or Monitor. When the Machine goes down, eg, i am unable to ping it from another Machine on the Network, even restarting the machine using reboot will not fix the Problem. The only way to fix it is to login as root, and issue a ifconfig vr0 down ifconfig vr0 up. Then a dmesg Message appears : vr0: Using force reset command., and after that i can successfully ping the machine again. I have had this Problem on different machines with different Network Cards, on different Ethernet Cables, and with FreeBSD Versions 5.5 until 6.1. Can anyone please help me to understand and possibly even fix this Problem? Thanks a lot, David ___ freebsd-questions@freebsd.org mailing list http://lists.freebsd.org/mailman/listinfo/freebsd-questions To unsubscribe, send any mail to [EMAIL PROTECTED]
Re: Loosing Ethernet Connectivity
Hey, sure, i can do a script which does the up-down when it cant ping the router or something, but to be honest i think that is not a production solution. cheap nic..maybe, some of the nics in question where onboard ones, which are not the best ones out there, but others, such as the 3COM 3c90b5 Fast Etherlink XL PCI, is that also a shitty one? I also have a tried a simple D-LINK and a Realtek one. It seems that under a certain condition FreeBSD just shuts down its Networking, and if thats true i wonder if that can be done remotely, that would not be cool. David On Jan 22, 2007, at 11:15 AM, Richard Lynch wrote: Sounds like flaky/cheap network card to me... [But I'm no expert] Perhaps, however, just doing a cron job every day to do the ifconfig down/up would be a simple work-around. On Sun, January 21, 2007 9:12 pm, David Schulz wrote: Hello all, every once in a while i have a machine (6.1) that out of the blue, sometimes after days, some after 6 months, looses Ethernet Connectivity. My Machines just run some Service, and have no Keyboard / Mouse or Monitor. When the Machine goes down, eg, i am unable to ping it from another Machine on the Network, even restarting the machine using reboot will not fix the Problem. The only way to fix it is to login as root, and issue a ifconfig vr0 down ifconfig vr0 up. Then a dmesg Message appears : vr0: Using force reset command., and after that i can successfully ping the machine again. I have had this Problem on different machines with different Network Cards, on different Ethernet Cables, and with FreeBSD Versions 5.5 until 6.1. Can anyone please help me to understand and possibly even fix this Problem? Thanks a lot, David ___ freebsd-questions@freebsd.org mailing list http://lists.freebsd.org/mailman/listinfo/freebsd-questions To unsubscribe, send any mail to [EMAIL PROTECTED] -- Some people have a gift link here. Know what I want? I want you to buy a CD from some starving artist. http://cdbaby.com/browse/from/lynch Yeah, I get a buck. So? ___ freebsd-questions@freebsd.org mailing list http://lists.freebsd.org/mailman/listinfo/freebsd-questions To unsubscribe, send any mail to [EMAIL PROTECTED]
Re: Loosing Ethernet Connectivity
Sounds like flaky/cheap network card to me... [But I'm no expert] Perhaps, however, just doing a cron job every day to do the ifconfig down/up would be a simple work-around. On Sun, January 21, 2007 9:12 pm, David Schulz wrote: Hello all, every once in a while i have a machine (6.1) that out of the blue, sometimes after days, some after 6 months, looses Ethernet Connectivity. My Machines just run some Service, and have no Keyboard / Mouse or Monitor. When the Machine goes down, eg, i am unable to ping it from another Machine on the Network, even restarting the machine using reboot will not fix the Problem. The only way to fix it is to login as root, and issue a ifconfig vr0 down ifconfig vr0 up. Then a dmesg Message appears : vr0: Using force reset command., and after that i can successfully ping the machine again. I have had this Problem on different machines with different Network Cards, on different Ethernet Cables, and with FreeBSD Versions 5.5 until 6.1. Can anyone please help me to understand and possibly even fix this Problem? Thanks a lot, David ___ freebsd-questions@freebsd.org mailing list http://lists.freebsd.org/mailman/listinfo/freebsd-questions To unsubscribe, send any mail to [EMAIL PROTECTED] -- Some people have a gift link here. Know what I want? I want you to buy a CD from some starving artist. http://cdbaby.com/browse/from/lynch Yeah, I get a buck. So? ___ freebsd-questions@freebsd.org mailing list http://lists.freebsd.org/mailman/listinfo/freebsd-questions To unsubscribe, send any mail to [EMAIL PROTECTED]
Re: Loosing Ethernet Connectivity
What about firewall and especially ipfw MAC rules? ___ freebsd-questions@freebsd.org mailing list http://lists.freebsd.org/mailman/listinfo/freebsd-questions To unsubscribe, send any mail to [EMAIL PROTECTED]
Re: Loosing Ethernet Connectivity
since the machines in question are behind a nat router with firewall, they do not have extra firewall enabled. On Jan 22, 2007, at 11:56 AM, [EMAIL PROTECTED] wrote: What about firewall and especially ipfw MAC rules? ___ freebsd-questions@freebsd.org mailing list http://lists.freebsd.org/mailman/listinfo/freebsd-questions To unsubscribe, send any mail to freebsd-questions- [EMAIL PROTECTED] ___ freebsd-questions@freebsd.org mailing list http://lists.freebsd.org/mailman/listinfo/freebsd-questions To unsubscribe, send any mail to [EMAIL PROTECTED]
Re: Loosing Ethernet Connectivity
Been there. You need to replace your ethernet switch. It's what they call an ethernet hardware incompatability. Forcing the card to 10baset half or 100 base t full might fix it but probably not. Ted . - Original Message - From: David Schulz [EMAIL PROTECTED] To: [EMAIL PROTECTED] Sent: Sunday, January 21, 2007 7:12 PM Subject: Loosing Ethernet Connectivity Hello all, every once in a while i have a machine (6.1) that out of the blue, sometimes after days, some after 6 months, looses Ethernet Connectivity. My Machines just run some Service, and have no Keyboard / Mouse or Monitor. When the Machine goes down, eg, i am unable to ping it from another Machine on the Network, even restarting the machine using reboot will not fix the Problem. The only way to fix it is to login as root, and issue a ifconfig vr0 down ifconfig vr0 up. Then a dmesg Message appears : vr0: Using force reset command., and after that i can successfully ping the machine again. I have had this Problem on different machines with different Network Cards, on different Ethernet Cables, and with FreeBSD Versions 5.5 until 6.1. Can anyone please help me to understand and possibly even fix this Problem? Thanks a lot, David ___ freebsd-questions@freebsd.org mailing list http://lists.freebsd.org/mailman/listinfo/freebsd-questions To unsubscribe, send any mail to [EMAIL PROTECTED] ___ freebsd-questions@freebsd.org mailing list http://lists.freebsd.org/mailman/listinfo/freebsd-questions To unsubscribe, send any mail to [EMAIL PROTECTED]
Re: Loosing Ethernet Connectivity
Hi, thats harsh, because before i used a cheaper Mitsubishi, forgot the Model, but before Christmas i purchased a Cisco ws-c2960-48tt-l , which i thought was not too bad for what i needed. I just cant replace it easily now. Really, is that it? Im gonna have to go with the cronjob / shell script option? So sad, David On Jan 22, 2007, at 1:00 PM, Ted Mittelstaedt wrote: Been there. You need to replace your ethernet switch. It's what they call an ethernet hardware incompatability. Forcing the card to 10baset half or 100 base t full might fix it but probably not. Ted . - Original Message - From: David Schulz [EMAIL PROTECTED] To: [EMAIL PROTECTED] Sent: Sunday, January 21, 2007 7:12 PM Subject: Loosing Ethernet Connectivity Hello all, every once in a while i have a machine (6.1) that out of the blue, sometimes after days, some after 6 months, looses Ethernet Connectivity. My Machines just run some Service, and have no Keyboard / Mouse or Monitor. When the Machine goes down, eg, i am unable to ping it from another Machine on the Network, even restarting the machine using reboot will not fix the Problem. The only way to fix it is to login as root, and issue a ifconfig vr0 down ifconfig vr0 up. Then a dmesg Message appears : vr0: Using force reset command., and after that i can successfully ping the machine again. I have had this Problem on different machines with different Network Cards, on different Ethernet Cables, and with FreeBSD Versions 5.5 until 6.1. Can anyone please help me to understand and possibly even fix this Problem? Thanks a lot, David ___ freebsd-questions@freebsd.org mailing list http://lists.freebsd.org/mailman/listinfo/freebsd-questions To unsubscribe, send any mail to [EMAIL PROTECTED] ___ freebsd-questions@freebsd.org mailing list http://lists.freebsd.org/mailman/listinfo/freebsd-questions To unsubscribe, send any mail to freebsd-questions- [EMAIL PROTECTED] ___ freebsd-questions@freebsd.org mailing list http://lists.freebsd.org/mailman/listinfo/freebsd-questions To unsubscribe, send any mail to [EMAIL PROTECTED]
Re: Loosing Ethernet Connectivity
Either that or replace the network card. Or put a dumb little 4 port hub between the card and the switch. it's funny but sometimes the cheaper nics have autonegotiation issues with the better quality hubs, and don't with the cheaper hubs. The network gods like to throw us these things from time to time to remind us the Universe has no fundamental logic Ted - Original Message - From: David Schulz [EMAIL PROTECTED] To: Ted Mittelstaedt [EMAIL PROTECTED] Cc: [EMAIL PROTECTED] Sent: Sunday, January 21, 2007 9:06 PM Subject: Re: Loosing Ethernet Connectivity Hi, thats harsh, because before i used a cheaper Mitsubishi, forgot the Model, but before Christmas i purchased a Cisco ws-c2960-48tt-l , which i thought was not too bad for what i needed. I just cant replace it easily now. Really, is that it? Im gonna have to go with the cronjob / shell script option? So sad, David On Jan 22, 2007, at 1:00 PM, Ted Mittelstaedt wrote: Been there. You need to replace your ethernet switch. It's what they call an ethernet hardware incompatability. Forcing the card to 10baset half or 100 base t full might fix it but probably not. Ted . - Original Message - From: David Schulz [EMAIL PROTECTED] To: [EMAIL PROTECTED] Sent: Sunday, January 21, 2007 7:12 PM Subject: Loosing Ethernet Connectivity Hello all, every once in a while i have a machine (6.1) that out of the blue, sometimes after days, some after 6 months, looses Ethernet Connectivity. My Machines just run some Service, and have no Keyboard / Mouse or Monitor. When the Machine goes down, eg, i am unable to ping it from another Machine on the Network, even restarting the machine using reboot will not fix the Problem. The only way to fix it is to login as root, and issue a ifconfig vr0 down ifconfig vr0 up. Then a dmesg Message appears : vr0: Using force reset command., and after that i can successfully ping the machine again. I have had this Problem on different machines with different Network Cards, on different Ethernet Cables, and with FreeBSD Versions 5.5 until 6.1. Can anyone please help me to understand and possibly even fix this Problem? Thanks a lot, David ___ freebsd-questions@freebsd.org mailing list http://lists.freebsd.org/mailman/listinfo/freebsd-questions To unsubscribe, send any mail to [EMAIL PROTECTED] ___ freebsd-questions@freebsd.org mailing list http://lists.freebsd.org/mailman/listinfo/freebsd-questions To unsubscribe, send any mail to freebsd-questions- [EMAIL PROTECTED] ___ freebsd-questions@freebsd.org mailing list http://lists.freebsd.org/mailman/listinfo/freebsd-questions To unsubscribe, send any mail to [EMAIL PROTECTED]
Re: Loosing Ethernet Connectivity
David Schulz wrote: Hello all, every once in a while i have a machine (6.1) that out of the blue, sometimes after days, some after 6 months, looses Ethernet Connectivity. When something is frequently erratic, suspect software. But your problem looks like intermittent hardware. I have observed that the LAN will be marked down if you boot without it connected. Then if you connect the LAN and click a web bookmark, it will recover automatically without human intervention. CAT5 LAN cables with RJ45 plugs are not very robust. And people tend to handle them carelessly... stepping on them, tripping over them etc. They are usually single strand copper which can break inside the insulation with frequent flexing. The RJ45 plugs have poor strain relief such that the outer insulation pulls out of the plug creating another failure point. So for vexing problems like yours, I would examine the hardware very closely. Cheers, -BobMc- ___ freebsd-questions@freebsd.org mailing list http://lists.freebsd.org/mailman/listinfo/freebsd-questions To unsubscribe, send any mail to [EMAIL PROTECTED]
Re: Loosing Ethernet Connectivity
hey, sure, of course i have checked the cat5 first, but it is clearly not the cable. id say it is as ted has written. what i would like to know now is how exactly happens this hardware incompatibility? On Jan 22, 2007, at 1:51 PM, bobmc wrote: David Schulz wrote: Hello all, every once in a while i have a machine (6.1) that out of the blue, sometimes after days, some after 6 months, looses Ethernet Connectivity. When something is frequently erratic, suspect software. But your problem looks like intermittent hardware. I have observed that the LAN will be marked down if you boot without it connected. Then if you connect the LAN and click a web bookmark, it will recover automatically without human intervention. CAT5 LAN cables with RJ45 plugs are not very robust. And people tend to handle them carelessly... stepping on them, tripping over them etc. They are usually single strand copper which can break inside the insulation with frequent flexing. The RJ45 plugs have poor strain relief such that the outer insulation pulls out of the plug creating another failure point. So for vexing problems like yours, I would examine the hardware very closely. Cheers, -BobMc- ___ freebsd-questions@freebsd.org mailing list http://lists.freebsd.org/mailman/listinfo/freebsd-questions To unsubscribe, send any mail to freebsd-questions- [EMAIL PROTECTED] ___ freebsd-questions@freebsd.org mailing list http://lists.freebsd.org/mailman/listinfo/freebsd-questions To unsubscribe, send any mail to [EMAIL PROTECTED]
Re: Loosing Ethernet Connectivity
On Jan 21, 2007, at 21:59, David Schulz wrote: hey, sure, of course i have checked the cat5 first, but it is clearly not the cable. id say it is as ted has written. what i would like to know now is how exactly happens this hardware incompatibility? The interface chips use a very low level protocol to identify the rates and modes being used by the other end. Those are dependent on voltage thresholds which sometimes are not as accurate as one would like. Components age and tolerances change which can cause the two ends to get out of sync with each other. The interface specifications also tend to change a bit over time. I don't have the exact specs for ethernet, but the same issue arose many years ago with RS-232 devices. The original specification had a threshold voltage of around 20 volts. For line drivers with 25-28 volt sources it worked great. But, 25 volts is somewhat difficult in many situations and people started fudging using 12 V sources which would work with many of the drivers that actually used a 10 V threshold. Those devices would interface with some, but not all of the older devices. Ethernet has undergone a number of changes from the original RG-8 cabling to today. ___ freebsd-questions@freebsd.org mailing list http://lists.freebsd.org/mailman/listinfo/freebsd-questions To unsubscribe, send any mail to [EMAIL PROTECTED]
