Cisco Cisco IOS Software Release 12.4(2)T
Active Probe Source Address
Prerequisites for Active Probe Source Address
2
Cisco IOS Release xx.x(x)X
Prerequisites for Active Probe Source Address
•
A master controller and border router processes are enabled in your network.
•
The interface that is to be configured as the address source for the active probe must be operational
and have a unique IP address.
and have a unique IP address.
Information About Active Probe Source Address
By default, active probes use the source IP address of the OER external interface that transmits the probe.
The Active Probe Source Address feature is configured on the border router. This feature allows you to
specify the source address of the active probe by configuring the
The Active Probe Source Address feature is configured on the border router. This feature allows you to
specify the source address of the active probe by configuring the
active-probe address source
OER
border router configuration command. When this command is configured, the primary IP address of the
specified interface is used as the active probe source.
specified interface is used as the active probe source.
The active probe source interface IP address must be unique to ensure that the probe reply is routed back
to the specified source interface. If the interface is not configured with an IP address, the active probe
will not be generated. If the IP address is changed after the interface has been configured as an active
probe source, active probing is stopped, and then restarted with the new IP address. If the IP address is
removed after the interface has been configured as an active probe source, active probing is stopped and
not restarted until a valid primary IP address is configured.
to the specified source interface. If the interface is not configured with an IP address, the active probe
will not be generated. If the IP address is changed after the interface has been configured as an active
probe source, active probing is stopped, and then restarted with the new IP address. If the IP address is
removed after the interface has been configured as an active probe source, active probing is stopped and
not restarted until a valid primary IP address is configured.
How to the Configure the Source Address of an Active Probe
The section describes how to specify the source interface for active probing. The active probe source
interface is configured on the border router with the
interface is configured on the border router with the
active-probe address source
command in OER
border router configuration mode. The active probe source interface IP address must be unique to ensure
that the probe reply is routed back to the specified source interface.
that the probe reply is routed back to the specified source interface.
Defaults
•
The source IP address is used from the default OER external interface that transmits the active probe
when this command is not enabled or if the no form is entered.
when this command is not enabled or if the no form is entered.
•
If the interface is not configured with an IP address, the active probe will not be generated.
•
If the IP address is changed after the interface has been configured as an active probe source, active
probing is stopped, and then restarted with the new IP address.
probing is stopped, and then restarted with the new IP address.
•
If the IP address is removed after the interface has been configured as an active probe source, active
probing is stopped and not restarted until a valid primary IP address is configured.
probing is stopped and not restarted until a valid primary IP address is configured.
SUMMARY STEPS
1.
enable
2.
configure terminal
3.
oer border
4.
active-probe address source interface type number
5.
end