What Switch Metric Are You Monitoring

[Macleod, Chris]

Hello Rab,

 

I monitor the following services on my Cisco Switches.

 

Ping

Uplink status + bandwidth utilisation

CPU (Avg 5 mins)

Environment (FAN, PSU) 



If my server was connected to the network as below:



Server1 => Switch1 => Switch2 => Localhost (Nagios)

 

I would configure the parent/child relationship this way.

 

Server1 Parent = Switch1
Switch1 Parent = Switch2

Switch2 Parent  = Localhost

If you do this you will end up with the Nagios network map looking like
your network documentation.  Also If switch2 does down Nagios will
assume Switch1 and Server1 are also unavailable and will suppress
notifications.

I have also setup service dependencies so that all my switch as follows


define servicedependency {

       dependent_host_name                      HPK3044

       dependent_service_description            CPU 5 min
average,Environmental monitoring,Link to HPD-LRE Bandwidth,Link to
HPD-LRE Status,Link to HPKDC1 Bandwidth,Link to HPKDC1 Status,Vlan 1
Bandwidth,Vlan 1 Status

       host_name                                HPK3044

       service_description                      Ping

       inherits_parent                          1

       execution_failure_criteria               w,u,c

       notification_failure_criteria            w,u,c

       dependency_period                        24x7  

This makes all the monitored services on the switch dependant on the
switch being pingable.  If the ping service is in the warning, critical
or unknown state all the other services will not produce notifications. 

 

 

Hope this helps

Chris Macleod








 

From: Robert Jackson [mailto:rab at walkermartyn.co.uk] 
Sent: 13 August 2010 10:20
To: nagios-users at lists.sourceforge.net
Subject: [Nagios-users] What Switch Metric Are You Monitoring

 

I'm currently on Nagios Core 3.2.1 and I'm just starting to setup
monitoring of our network switches. Can someone share what switch
metrics they are recording (and find most useful). Just now, I'm only
registering PING and Uptime (through SMNP). Also how are you handling
parent/child relationships for the switches/ports etc? Basically if a
switch is down, then I would only want to receive and alert regarding
this and not anything else related to the port or device connected to
the port.

Regards,

Rab.

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Walker Martyn Ltd

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http://www.walkermartyn.co.uk <http://www.walkermartyn.co.uk> 

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