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Full Discussion: packet loss problem
Special Forums IP Networking packet loss problem Post 302277610 by Lazydog on Friday 16th of January 2009 10:51:28 PM
Old 01-16-2009
Quote:
Originally Posted by photon
So if they were indeed at FULL DUPLEX it would NOT have dropped the connection and should have been FULL to FULL, but that is not the case.
The connection would have only dropped if the speeds were mis-matched. Duplex should not have caused this.

Quote:
When I changed back to AUTO it said HALF duplex again on their side. Only when they changed to AUTO did my side show them as FULL duplex.

Why did my switch say HALF for data center when my switch was set to
AUTO duplex and data center side was set to FULL?Smilie

Why would connection drop if supposedly both sides where set to FULL?Smilie
Duplex is simple to understand. If one side is set to AUTO it expects the other side to be set to AUTO also.

Think of it as a 3-way hand shake for a connection. First side asks the Second what he can run at. The Second side says I can do Full, the First side says ok we will do Full. If both are set to AUTO then they decide at what Duplex they will connect at, which is normally FULL.

If one side is hard coded it ignores request for duplex settings thus the side set to AUTO defaults to Half.

It is not normal to set servers to AUTO. AUTO should only be used when you don't know what might be plugged into the port.

Quote:
This is all very frustrating, the data center is seeing problems on their end but not disclosing that information to me and suggesting it is my problem.Smilie
If they are really seeing issue and they believe it is you then they should be able to provide details as to why it is your side with the problem.

They should be able to provide you with the port settings from the running config on the switch. I would ask for this.
 

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ABRT-AUTO-REPORTIN(1)						    ABRT Manual 					     ABRT-AUTO-REPORTIN(1)

NAME
abrt-auto-reporting - Get or modify a value of the auto reporting option SYNOPSIS
abrt-auto-reporting [-v] [ enabled | yes | 1 | disabled | no | 0 ] DESCRIPTION
Reads the configuration from abrt.conf and saves the changes to the same file. The changes will take effect immediately without necessity to restart any ABRT process and will be persistent. disabled User have to report the detect problems manually enabled ABRT uploads an uReport which was generated for a detected problem immediately after the detection phase. uReport description ABRT supports uReports for four types of crashes: crashes of C/C++ programs that result in a core dump, uncaught Python exceptions, uncaught Java exceptions and kernel oopses. Each uReport generally contains a stack trace, or multiple stack traces in the case of multi-threaded C/C++ and Java programs. The stack trace only describes the call stack of the program at the time of the crash and does not contain contents of any variables. Every uReport also contains identification of the operating system, versions of the RPM packages involved in the crash, and whether the program ran under a root user. There are also items specific to each crash type: C/C++ crashes these are path to the executable and signal delivered to the program, Python exceptions there is the type of the exception (without the error message, which may contain sensitive data), for kernel oopses these are list of loaded kernel modules, list of taint flags, and full text of the kernel oops. Warning: The full text of a kernel oops might contain information like the identification of the host hardware type. You should disable the autoreporting feature if you do not want to share this information with Red Hat. OPTIONS
-v, --verbose Be more verbose. Can be given multiple times. SEE ALSO
abrt.conf(5) AUTHORS
o ABRT team abrt 2.1.11 06/18/2014 ABRT-AUTO-REPORTIN(1)
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