The Breath-Of-Life (BOFL) function, when enabled, will disable
the LLC interface when the FDDI becomes non-operational
(i.e., link unavailable) and the following conditions are true:
1. The wfFddiMacMaUnitDataEnable attribute is enabled.
2. The BOFL timer expired (specified by wfFDDIBoflTmo).
If this attribute is disabled, the LLC interface will be
terminated immediately after the link becomes unavailable.