EXOS – Logging / Syslog

29th December 2015 by Martin Flammia

Filed under Extreme Networks EXOS

Last modified 4th January 2016

Below is a basic configuration for configuring two different syslog servers that gives the correct format for NetSight. Both use the “DefaultFilter”, but one is set to a severity of ‘Debug-Data’ (and higher) and the other is set to ‘Info’ (and higher).

In addition, an exclude has been added to the “DefaultFilter” to remove DM.Notice messages. More on the use of the “DefaultFilter” later.

You can specify seven types of targets to receive log messages:

  • Console display
  • Current session (Telnet or console display)
  • Memory buffer (can contain 200 to 20,000 messages)
  • NVRAM (messages remain after reboot)
  • Primary MSM/MM (for modular systems) or node (for SummitStack)
  • Backup MSM/MM (for modular systems) or node (for SummitStack)
  • Syslog host

Below is an example default configuration for logging to the memory buffer, NVRAM and console:

The severity level can be set to as follows:

  • Critical: A serious problem has been detected that is compromising the operation of the
    system; the system cannot function as expected unless the situation is remedied. The
    switch may need to be reset.
  • Error: A problem has been detected that is interfering with the normal operation of the
    system; the system is not functioning as expected.
  • Warning: An abnormal condition, not interfering with the normal operation of the system, has
    been detected that indicate that the system or the network in general may not be
    functioning as expected.
  • Notice: A normal but significant condition has been detected, which signals that the system is
    functioning as expected.
  • Info (Informational): A normal but potentially interesting condition has been detected, which signals that
    the system is functioning as expected; this level simply provides potentially detailed
    information or confirmation.
  • Debug-Summary: A condition has been detected that may interest a developer seeking the reason
    underlying some system behaviour.
  • Debug-Verbose: A condition has been detected that may interest a developer analyzing some system
    behavior at a more verbose level than provided by the debug summary information.
  • Debug-Data: A condition has been detected that may

If you want to specify a different source address you can add the following line:

The various log target configurations can be viewed with the following:

or to view all:

 

The example given below shows how to add events to the “DefaultFilter”, of which the below gives the best events to add if trying to diagnose OSPF related issues:

or for spanning tree:

 

 

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