Netgear GS748TPS GS7xxTPS Hardware manual - Page 16

GS700TPS Smart Switch stack master in the event of failure of stack master. The master and backup master are assigned unit IDs of 1 and 2. The Stack Master provides a Single point of control and management as well as a single interface in which to control and manage the stack. Switch software is downloaded separately for each stack members. However, all units in the stack must be running the same software version. A stack unit can operate in one of the following Modes: • Standalone unit runs as a general switch. The standalone unit does not run the stacking application, until it is connected to a stack. • The Master unit manages the entire stack, and is responsible for the entire stack configuration. All protocols run in the context of the Master unit. It is responsible to update and synchronize the Backup master. • A master-backup unit runs as a slave unit as described above, and in addition, it continuously monitors the existence and operation of the stack master. If the master unit fails, the masterbackup unit will assume the stack-master role. ("Switchover"). • A slave unit only runs a slave version of the Distributed Switching Algorithm, which allows the applications running on the Master unit's CPU to control and manage the resources of the slave unit. 1-6 Introduction v1.0, April 2009