Re: Loosing Ethernet Connectivity

2007-01-22 Thread Derek Ragona
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]


Re: Loosing Ethernet Connectivity

2007-01-21 Thread David Schulz

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

2007-01-21 Thread Richard Lynch
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

2007-01-21 Thread applecom

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

2007-01-21 Thread David Schulz
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

2007-01-21 Thread Ted Mittelstaedt
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

2007-01-21 Thread David Schulz

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

2007-01-21 Thread Ted Mittelstaedt

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

2007-01-21 Thread bobmc
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

2007-01-21 Thread David Schulz
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

2007-01-21 Thread Doug Hardie


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]