HP Integrated Communication Facility Backup Link Table

1.3.6.1.4.1.11.2.14.11.4.2.2

A table of backup link configuration entries. For a given backup link, the agent will periodically send a test packet to the device at the specified address. If no response is received after a configured number of test packets are sent, the agent will enable the backup port and disable the primary port, and will stop sending periodic test packets. After the agent has switched to the backup link, the primary port will need to explicitly be re-enabled via management action in order to return to using the primary port. At any time, a management station can examine the associated instance of the hpicfBackupLinkState object to determine if the backup port is currently in use. The backup link algorithm enables and disables the backup port by modifying the instance of the rptrPortAdminStatus object corresponding to that port. After the backup port has been enabled by the backup link algorithm, if the primary port is subsequently enabled via management action, the backup port will be turned off and the periodic test packets will resume. When a row of this table is activated, the backup port will be disabled, the primary port will be enabled, and the periodic test packets will be sent. The time between test packets is configurable using the associated instance of the hpicfBackupLinkTestTime object. The number of failures needed to switch to the backup port is configurable using the associated instance of the hpicfBackupLinkConsecFailures object. The backup link function can be disabled by setting the relevant instance of the hpicfBackupLinkStatus object to either 'notInService' or 'destroy'. Note that the primary port for a backup link must be mapped to a repeater segment that the agent is capable of transmitting through. In addition, a given port cannot be used in more than one active backup link at the same time.