Ping and RTA

[Michael.Washington at fitchratings.com]

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)
Address: 172.17.11.12
State: CRITICAL

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)
Address: 172.17.11.12
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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