port

Tells CNA what port to use on an external device that is being polled or probed.

port <number>

no port

• number--a valid port number on the device to be polled; range: 1 through 65535

Must be in polling-agent (config-polling-snmp) or active-measurement group (config-engine-active) configuration mode, both of which require privileged-level access.

SNMP polling--161

Active-measurement group--no default

The port command tells CNA what port to contact on a remote device.

You can use the port command in either of the following configuration modes:

• polling-agent (config-polling-snmp) mode--when polling for link usage is enabled, the CNA SNMP link-monitor agent will contact an external device (usually a router) using the port number specified by number
• active-measurement group (config-engine-active) mode--if specified for an active-measurement group, CNA will use this port to contact a target of an active-measurement probe; the group-wide value is superseded by a port specified for an individual target

NOTE: If you are configuring a TCP-type active probe, a port value must be specified either for the individual probe or the group, or the probe will fail. The output of the show statistics command for the am-scheduler process includes a configuration errors table which will note the lack of a port assignment.

See the polling usage on command for more information about polling for link usage data. See the polling snmp-agent command for more information about polling parameters.

See the active-measurement group command for general information about active measurement groups. See the target command information about group-wide versus specific port assignments.

Use the no form of the port command to reset the port number to the default. (This will remove the port command from an active measurement group.)