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Configuring Optional Characteristics

In addition to configuring the probe’s type, you can configure the probe characteristics presented in Table 8.

Table 8: Probe Characteristics

Characteristic	Description
frequency	Time between tests (in seconds)
hops-of-statistics-kept	Hops per path for which statistics are gathered
max-response-failure	Maximum number of consecutive failures
operations-per-hop	Number of probes per hop
owner	Owner of the probe
receive-interface	Interface on which the probe expects to receive responses
request-data-size	Request’s payload size
samples-of-history-kept	Maximum number of history samples
tag	User-defined tag
timeout	Probe timeout (in milliseconds)
tos	A value for the TOS byte

frequency

Use to set the rate (in seconds) that the RTR probe uses to start a response time operation.
Examplehost1(config-rtr)#frequency 90
Use the no version to return to the default value, 60 seconds.
See frequency

operations-per-hop

Use to set the number of RTR probe operations sent to a given hop.
You can apply this option only to a pathEcho type.
Examplehost1(config-rtr)#operations-per-hop 5
Use the no version to return to the default, 3.
See operations-per-hop

owner

Use to identify the owner of the probe.
If the SNMP agent is the owner of the probe, the owner’s name can begin with agent.
Examplehost1(config-rtr)#owner 192.10.27.6 rtc.boston.com 555.1212
Use the no version to return to the default, no owner.
See owner

request-data-size

Use to set the protocol data size, in bytes, in the request packet.
Examplehost1(config-rtr)#request-data-size 20
Use the no version to return to the default value, 1 byte.
See request-data-size

tag

Use to set an identifier for the probe.
Examplehost1(config-rtr)#tag westford
Use the no version to return to the default, no tag.
See tag

timeout

Use to set the time (in milliseconds) that the probe waits for a response.
You can apply this option only to an echo type.
Do not set the value for timeout to more than the value set for frequency. If you do, the timeout value is ignored.
If you set the timeout to 0, no timeout is set.
Examplehost1(config-rtr)#timeout 3000
Use the no version to return to the default value, 5000 milliseconds.
See timeout

tos

Use to set the type of service (ToS) byte in the probe’s IP header.
Examplehost1(config-rtr)#tos 16
Use the no version to return to the default value, 0. The default applies to both the echo and pathEcho types.
See tos

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