N3T_TN3270_Avg_IP_Resp_Time
Average IP response time measured over the last response time collection
interval. Response time collection interval is specified on the AvgSampPeriod
parameter of MONITORGROUP statement in the TCP/IP profile dataset The probable
cause of a high average IP response time is network congestion. Possible
procedures to isolate and correct the problem include the following:
- Determine if other TCP/IP connections from or to the same subnet have
high average IP response times. This might indicate a router congestion problem.
- Issue a trace route command to determine the most probable routing path.
- Determine if the routing path being used is a secondary or backup routing
path. If the primary path is not being used, identify and fix the problem
with the primary path.
- Query the routing interfaces on the routing path to determine the number
of packets dropped.
- Identify the routers along the routing path with highest numbers of packets
being dropped.
- Validate the router configuration parameters.
- Check the OSA adapter metrics to determine if adapter constraints (such
as excessive processor utilization or discards at the receive side) exist.
This situation is triggered when the average total response time is greater
than 1.0 seconds.
As provided, this situation is not started automatically.
Note:
Applicable only when monitoring TN3270 servers running on
z/OS v1.8 and higher.