eG Monitoring
 

Measures reported by CtxNsUdpTest

This test monitors the UDP packets/data flowing into and out of the NetScaler appliance, and thus reveals the current UDP load on the appliance. In the process, the test promptly detects UDP packet limit violations and alerts administrators to it, so that potential overload conditions or probable network congestions due to high UDP traffic can be detected and averted.

The measures made by this test are as follows:

Measurement Description Measurement Unit Interpretation
Cur_rate_threshold Indicates the limit of UDP packets handled every 10 milliseconds. Number This implies that within 10 milliseconds (ms) range, NetScaler can allow (receive or pass through) the set number of UDP packets. This threshold is configurable. Once this threshold is violated, subsequent UDP packets will be dropped by the appliance. You are hence advised to configure this limit based on the current and anticipated UDP traffic to the NetScaler appliance. To set/alter this limit, use the set rateControl command.
Data_received Indicates the amount of UDP data received during the last measurement period. MB These measures are good indicators of the UDP load on the NetScaler appliance.
Data_transmitted Indicates the amount of UDP data transmitted during the last measurement period. MB
Packet_received Indicates the number of UDP packets received during the last measurement period. Number
Packet_transmitted Indicates the number of UDP packets transmitted during the last measurement period. Number
Unknown_service Indicates the number of UDP packets that were received on a NetScaler port number that is not assigned to any service. Number This measure counts those UDP packets that were received, but dropped.
Bad_udp_checksum Indicates the number of packets that were received with a checksum error. Number  
Rate_threshold_exceeded Indicates the number of times the Cur_rate_threshold measure has been violated. Number A high value of this measure indicates that the Cur_rate_threshold has been violated often. When this happens, you must first ensure that the UDP packets received are genuine. If they are genuine, then you must increase the current rate threshold. To set/alter this limit, use the set rateControl command.