Red Hat NETWORK SATELLITE 5.2 - CHANNEL MANAGEMENT, Reference Manual

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Appendix C. Probes
226
• Round-Trip Average — The time it takes in milliseconds for the ICMP ECHO packet to travel to and
from the monitored system.
• Packet Loss — The percent of data lost in transit.
Although optional, the
IP Address
field can be instrumental in collecting metrics for systems that have
multiple IP addresses. For instance, if the system is configured with multiple virtual IP addresses or
uses Network Address Translation (NAT) to support internal and external IP addresses, this option
may be used to check a secondary IP address rather than the primary address associated with the
hostname.
Note that this probe conducts the
ping
from an RHN Server and not the monitored system.
Populating the IP Address field does not test connectivity between the system and the specified IP
address but between the RHN Server and the IP address. Therefore, entering the same IP address
for Ping probes on different systems accomplishes precisely the same task. To conduct a
ping
from a monitored system to an individual IP address, use the Remote Ping probe instead. Refer to
Section C.8.7, “Network Services::Remote Ping”
.
Field Value
IP Address (defaults to system IP)
Packets to send*
20
Timeout* 10
Critical Maximum Round-Trip Average
Warning Maximum Round-Trip Average
Critical Maximum Packet Loss
Warning Maximum Packet Loss
Table C.41. Network Services::Ping settings
C.8.6. Network Services::POP Mail
The Network Services::POP Mail probe determines if it can connect to the POP3 port on the system.
A port number must be specified; specifying another port number overrides the default port 110. This
probe collects the following metric:
• Remote Service Latency — The time it takes in seconds for the POP server to answer a connection
request.
The required
Expect
value is the string to be matched against after a successful connection is made
to the POP server. The probe looks 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 returns a CRITICAL state.
Field Value
Port* 110
Expect* +OK
Timeout* 10
Critical Maximum Remote Service Latency
Warning Maximum Remote Service Latency
Table C.42. Network Services::POP Mail settings