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Are services such as Ethernet IO Scanner or Global data active in a Standby unit within a Hot Standby System?

Not completely. IO Scanner is halted in the Standby unit but Global Data may send out GMRP and IGMP 'Join' messages to inform Ethernet switches supporting GMRP/IGMP for switch multicast table management. Global Data does not actively publish, nor subscribe in Standby mode.

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