Using the BayStack 450 10/100/1000 Series Switch1-26 302401-D Rev 00Stack MAC AddressThe Stack MAC address is automatically assigned during the stack initialization.The base unit’s MAC address, with a software offset, is used for the Stack MACaddress.For example, if the base unit’s MAC address is:00-00-82-99-44-00and the Stack software offset is: 1Fthen the Stack MAC address becomes:00-00-82-99-44-1FIf you designate another unit in the stack as the base unit, the MAC address of thenew base unit (with offset) now applies to the stack configuration. The originalstack IP address still applies to the new base unit.Temporary Base UnitIf an assigned base unit fails, the next unit in the stack order automaticallybecomes the new temporary base unit. This change is indicated by the Base LEDon the temporary base unit’s LED display panel turning on (amber). For detailedinformation about the base LED, see Table 1-1 on page 1-6.This automatic failover is a temporary safeguard only. If the stack configurationloses power, the temporary base unit will not power up as the base unit whenpower is restored. For this reason, you should always assign the temporary baseunit as the base unit (set the Unit Select switch to Base) until the failed unit isrepaired or replaced.Note: If you do not reassign the temporary base unit as the new base unit, andthe temporary base unit fails, the next unit directly downstream from this unitbecomes the new temporary base unit. This process can continue until thereare only two units left in the stack configuration.kombk.book Page 26 Tuesday, June 29, 1999 3:25 PM
