PRIMECLUSTER Global Link Services Configuration and Administration Guide: Redundant Line Control Function 4.1 (for Solaris(TM) Operating System)

D.2.2.2 It does not failback at the time of the restoration detection by standby patrol in NIC switching mode

Phenomenon:

The following messages display during recovering process of standby patrol in NIC switching mode. As a result, it fails to instantly switch back from the secondary interface to the primary interface.

hanet: INFO: 88500: standby interface recovered. (sha1)
hanet: INFO: 89700: immediate exchange to primary interface is canceled. (sha1)

Cause and how to deal with:

After switching from the primary interface to the secondary interface due to transfer path failure, if a standby patrol recovers prior to elapsed link up delay time (default is 60 sec), the switching process between the primary and secondary interface may loop infinitely. To prevent from this symptom, the above messages will display to stop the switching process for the primary interface. The main reason of covering this issue in this section is to prevent infinite loop of switching interfaces when setting routes for monitoring and instead of HUBs.