Introduction 17Figure 1-6. PowerConnect 3548/P port replaces PowerConect 3524/P PortSwitching from the Stack Master to the Backup Stack MasterThe Backup Master replaces the Stack Master if the following events occur:• The Stack Master fails or is removed from the stack.• Links from the Stack Master to the stacking members fails.• A soft switchover is performed with either via web interface or the CLI.Switching between the Stack Master and the Backup Master results in a limited service loss.Any dynamic tables are relearned if a failure occurs. The running configuration file is synchronizedbetween Stack Master and the Backup Master, and continues running on the Backup Master.Features OverviewThis section describes the device features. For a complete list of all updated device features, see the latestsoftware version Release Notes.IP Version 6 (IPv6) SupportThe device functions as an IPv6 compliant Host, as well as an IPv4 Host (also known as dual stack).This allows device operation in a pure IPv6 network as well as in a combined IPv4/IPv6 network.Power over EthernetPower over Ethernet (PoE) provides power to devices over existing LAN cabling, without updating ormodifying the network infrastructure. PoE removes the need for placing network devices next to powersources. PoE can be used in the following applications:• IP Phones• Wireless Access Points• IP GatewaysSame Configuration SameConfiguration
