156 Appendix C. Probes• Remote Service Latency — The time it takes in seconds for the POP server to answer a connectionrequest.The required Expect value is the string to be matched against after a successful connection is madeto the POP server. The probe will look for the string in the first line of the response from the system.The default is +OK. If the expected string is not found, the probe will return a CRITICAL state.Field ValuePort* 110Expect* +OKTimeout* 10Critical Maximum Remote Service LatencyWarning Maximum Remote Service LatencyTable C-42. Network Services::POP Mail settingsC.8.7. Network Services::Remote PingThe Network Services::Remote Ping probe determines if the monitored system can ping a specifiedIP address. It will also monitor the packet loss and compare the round trip average against the Warningand Critical threshold levels. The required Packets to send value allows you to control how manyICMP ECHO packets are sent to the address. This probe collects the following metrics:• Round-Trip Average — The time it takes in milliseconds for the ICMP ECHO packet to go to andfrom the IP address.• Packet Loss — The percent of data lost in transit.The IP Address field identifies the precise address to be pinged. Unlike a similar field in the standardPing probe that is optional, this field is required because the monitored system will be conducting theping, rather than the RHN Server. Leaving this field blank within the standard Ping probe tells RHNto ping the primary address of the monitored system. Since the Remote Ping probe tests connectivityfrom the monitored system itself, another IP address must be specified. To conduct pings from theRHN Server to a system or IP address, use the standard Ping probe instead. Refer to Section C.8.5Network Services::Ping.Requirements — The Red Hat Network Monitoring Daemon (rhnmd) must be running on the moni-tored system to execute this probe.Field ValueIP Address*Packets to send* 20Timeout* 10Critical Maximum Round-Trip AverageWarning Maximum Round-Trip AverageCritical Maximum Packet LossWarning Maximum Packet Loss
