Backup Links
Backup Links
Identifying the Backup Link
5.Enable the primary port in software. This step is necessary because until you have completed step 3 (connecting the cables), the test packets cannot be successfully sent through the primary port. The primary port will therefore be disabled and the backup port will be activated. Once you enable the primary port, it assumes the active role.
Identifying the Backup Link
The ports designated as the primary and backup ports are identified in:
■the CiscoView Backup function window.
■ASCII console interface by using the Backup command
The primary port is identified by (pri), the backup port by (bkup).
Indications of Backup Link Activation
When the primary link fails (“n” consecutive test packet responses were not received on the primary port from the other device), the backup link is automatically enabled. The effect of this change is displayed on the monitoring hub's LEDs and management interface. Activation of the backup link does not change the status of any of the ports on the remote device.
On the monitoring hub's LEDs, the primary port LED goes off, and the backup port LED goes on.
In the ASCII console or CiscoView, the status of the primary port changes from “active” to “not active”, and the backup port changes from not active to active. See the ASCII console help or CiscoView online help for more information.
