Cisco Cisco IOS Software Release 12.4(2)T
Active Probe Source Address
active-probe address source
6
Cisco IOS Release xx.x(x)X
active-probe address source
To configure an interface on a border router as the active-probe source, use the active-probe command
in OER border router configuration mode. To configure active probing to use a default exit interface, use
the no form of this command.
in OER border router configuration mode. To configure active probing to use a default exit interface, use
the no form of this command.
active-probe source address interface type number
no active-probe source address interface
Syntax Description
Command Default
The source IP address is used from the default OER external interface that transmits the active probe.
Command Modes
OER border router
Command History
Usage Guidelines
The
active-probe address source
command allows you to specify the source interface, from which
active probes are transmitted. When this command is configured, the primary IP address of the 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 is not restarted until a valid primary IP address is configured.
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 is not restarted until a valid primary IP address is configured.
Note
For eBGP peering sessions, the IP address of the eBGP peer must be reachable from the border router
via a connected route in order for active probes to be generated.
via a connected route in order for active probes to be generated.
Examples
The following example configures the FastEthernet 0/0 interface as the active probe source:
Router(config)# oer border
Router(config-oer-border)# active-probe address source FastEthernet 0/0
type
Specifies the interface type.
number
Specifies the interface number.
Release
Modification
12.4(2)T
This command was introduced.