Re: Linux server packet loss - stopped occassionally

2003-08-25 Thread Matthew Carpenter
Logs.. Good..
Errors.. Bad..  


On Sun, 24 Aug 2003 06:23:53 -0700
Net Llama! [EMAIL PROTECTED] wrote:

 Have you checked any logs to see if there are errors?  Are there any 
 ipchain/ipfilter rules in place?  Can you ssh to the box during the times 
 that it can't see the outside world?  How confident are you that the box 
 hasn't been compromised?


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Matthew Carpenter
[EMAIL PROTECTED]  http://www.eisgr.com/

Enterprise Information Systems
*Network Consulting, Integration  Support
*Web Development and E-Business
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Re: Linux server packet loss - stopped occassionally

2003-08-24 Thread Net Llama!
On 08/24/03 00:34, Swapana Ghosh wrote:

Hi 

 Few days we are having problem with one of
our clients's server(linux 7.1)...
Within last few days, we had to reboot the server
atleast 12 times...
 When the server stopped to work - we are
checking the *traceroute*..
We are getting that after prceeding upto 10/12 hubs
the server is not sending the package... We contacted
their server maintainance engineers , they are telling
that they have no problem with the router
/network...They are maintaining  so many
servers - if they have problem with router/network
then others' servers should have been also
under same condition!!!
 Now their engieers without rebooting the
server just did as follows:
#ifconfig eth0 down
#ifconfig eth0 up
#route add default gw 216.240.145.1
 Then the server started working

Here is the servers ifcfg-eth0 file cofiguration

DEVICE=eth0
ONBOOT=yes
BOOTPROTO=static
IPADDR=216.240.145.47
NETMASK=255.255.255.0
GATEWAY=216.240.145.1
Can anybody help me out to diagnose the problem?
Have you checked any logs to see if there are errors?  Are there any 
ipchain/ipfilter rules in place?  Can you ssh to the box during the times 
that it can't see the outside world?  How confident are you that the box 
hasn't been compromised?

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~
L. Friedman[EMAIL PROTECTED]
Linux Step-by-step  TyGeMo:http://netllama.ipfox.com
  6:20am  up 8 days, 18:47,  1 user,  load average: 0.00, 0.00, 0.00

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Re: Linux server packet loss - stopped occassionally

2003-08-24 Thread Bill Campbell
On Sun, Aug 24, 2003, Swapana Ghosh wrote:
Hi 

 Few days we are having problem with one of
our clients's server(linux 7.1)...
Within last few days, we had to reboot the server
atleast 12 times...

...
 Now their engieers without rebooting the
server just did as follows:

#ifconfig eth0 down
#ifconfig eth0 up
#route add default gw 216.240.145.1

 Then the server started working

What type of NIC are you using?  Realtek, and many of those running the
tulip drivers with non DEC chips can be really flakey.  If you're looking
for inexpensive, high quality NICs, the 3COM 3c905 series are often
available for about $10US.

Bill
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INTERNET:   [EMAIL PROTECTED]  Bill Campbell; Celestial Software LLC
UUCP:   camco!bill  PO Box 820; 6641 E. Mercer Way
FAX:(206) 232-9186  Mercer Island, WA 98040-0820; (206) 236-1676
URL: http://www.celestial.com/

A paranoid is a man who knows a little of what's going on.
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Re: Linux server packet loss - stopped occassionally

2003-08-24 Thread Shawn Tayler
On Sun, 24 Aug 2003 10:47:57 -0700 (PDT) Swapana Ghosh
[EMAIL PROTECTED] professed:

 ___
 
 eth0: 10 Mbit, half duplex, no link
   product info: vendor 00:00:00, model 0 rev 0
   basic mode:   10 Mbit, half duplex
   basic status: no link
   capabilities:
   advertising:
 

The no link is interesting.  Could it be a flakey NIC, cable, or Router
port?

Shawn
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Re: Linux server packet loss - stopped occassionally

2003-08-24 Thread burns
On Sun, 2003-08-24 at 14:56, Shawn Tayler wrote:
 On Sun, 24 Aug 2003 10:47:57 -0700 (PDT) Swapana Ghosh
 [EMAIL PROTECTED] professed:
 
  ___
  
  eth0: 10 Mbit, half duplex, no link
product info: vendor 00:00:00, model 0 rev 0
basic mode:   10 Mbit, half duplex
basic status: no link
capabilities:
advertising:
  
 
 The no link is interesting.  Could it be a flakey NIC, cable, or Router
 port?


I had this happen a couple of years ago with a Realtek 8139C NIC. I
swapped out the card and it was fine. Other than that, I have had much
better service from these cards than others apparently have.
-- 
burns

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Re: Linux server packet loss - stopped occassionally

2003-08-24 Thread ronnie gauthier
For my use I love the realteks, not a problem with them. For business use when
doing jobs I tend to use 3com 509's, same with modems, give me a good old 3com
anytime.


On 24 Aug 2003 15:16:51 -0400 - burns [EMAIL PROTECTED] wrote the
following
Re: Re: Linux server packet loss - stopped occassionally

On Sun, 2003-08-24 at 14:56, Shawn Tayler wrote:
 On Sun, 24 Aug 2003 10:47:57 -0700 (PDT) Swapana Ghosh
 [EMAIL PROTECTED] professed:
 
  ___
  
  eth0: 10 Mbit, half duplex, no link
product info: vendor 00:00:00, model 0 rev 0
basic mode:   10 Mbit, half duplex
basic status: no link
capabilities:
advertising:
  
 
 The no link is interesting.  Could it be a flakey NIC, cable, or Router
 port?


I had this happen a couple of years ago with a Realtek 8139C NIC. I
swapped out the card and it was fine. Other than that, I have had much
better service from these cards than others apparently have.
-- 
burns

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