Troubleshooting › General Troubleshooting › Increase in Network Round Trip Time (NRTT) › Increase in NRTT and Decrease in Observations Count

Increase in NRTT and Decrease in Observations Count

An increase in the NRTT while the Observations count decreases is a possible indicator of two very different events:

• Another application on the network is responsible for the increase in NRTT. This application might, or might not, be monitored by the management console.
• The application service has become unreliable because of instability on the network (link failures, routing divergence, STP divergence, carrier failover, and other errors). This might result in sporadic loss of service or ultimately a complete service outage.

If the NRTT spikes while the Observations count dips at the same point in time as the observed performance issue, complete the following actions to determine which event mentioned above caused the degradation in performance.