IBM SC30-3681-08 manual State Current state of the network interface, Testing, Disabled, Available

GWCON Process

State Current state of the network interface.

Testing

Indicates that the interface is undergoing a self-test. Occurs when the router is ®rst started, when a problem is detected on the interface, or when the test command is used.

When an interface is operational, the interface periodically sends out maintenance packets and/or checks the physical state of the port or line to ensure that the interface is still functioning correctly. If the maintenance fails, the interface is declared down and a self-test is scheduled to run in 5 seconds. If a self-test fails, the interface transitions to the down state and the interval until the next self-test is increased up to a maximum of 2 minutes. If the self-test is successful, the network is declared up.

Up Indicates the interface is operational.

Down Indicates that the interface is not operational and has failed a self-test. The network will periodically transition to the testing state to determine if the interface can become operational again.

Disabled

Indicates that the interface is disabled. An interface can be disabled by the following methods:

vAn interface can be con®gured as disabled using the CONFIG disable command. Each time the router is reinitialized, the interface's initial state will be disabled. It will remain in the disabled state until an action is taken to enable it.

vAn interface can be disabled using the GWCON disable command. This method is temporary because the interface will revert to its con®gured state (enabled or disabled) when the router is reinitialized.

vThe network manager can disable the interface through SNMP. This method is temporary because the interface will revert to its con®gured state (enabled or disabled) when the router is reinitialized.

When an interface is disabled, it remains disabled until one of the following methods is used to enable it:

vThe GWCON test command is used to start a self-test of the interface.

vThe network manager initiates a self-test of the interface through SNMP.

WAN Reroute also can change the state of a disabled interface. If an interface is con®gured as an alternate interface for WAN Reroute and its con®gured state is disabled, WAN Reroute will start a self-test of the interface when the primary interface goes down. When the primary interface is operational and stable again, WAN Reroute puts the alternate interface back to its con®gured state. Refer to The WAN Reroute Feature in Using and Con®guring Features for more information.

Available

Indicates that the interface has been con®gured as a secondary WAN Restoral interface and it is available to back up the primary interface.

132MRS V3.2 Software User's Guide