[Nagios-users] Ping and RTA

Michael.Washington at fitchratings.com Michael.Washington at fitchratings.com
Thu Apr 26 14:39:25 UTC 2007

What is RTA?
   Between the 10:20 pm and 10:30 pm CST, RTA for the same multiple devices
   increases dramatically and then returns immediately to normal
   operational/baseline levels.  Any thoughts on what could be the root
   cause of such a consistent occurrence?  Would this be symptomatic of a
   broadcast storm?  Could Spanning Tree be the root cause?  What is the
   most simplistic way to determine the root cause?

See examples below:

***** Nagios  *****

Notification Type: PROBLEM

Service: PING
Host: Chicago WAN Level3/Wiltel (secondary)

Date/Time: Wed Apr 25 22:16:35 CDT 2007

Additional Info:

PING CRITICAL - Packet loss = 0%, RTA = 2131.27 ms

***** Nagios  *****

Notification Type: RECOVERY

Service: PING
Host: Chicago WAN Level3/Wiltel (secondary)
State: OK

Date/Time: Wed Apr 25 22:20:57 CDT 2007

Additional Info:

PING OK - Packet loss = 0%, RTA = 1.25 ms

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