26 Feb 2014 xStack® DGS-3120 Series Layer 3 Managed Gigabit Switch Hardware Installation Guide iii This manual is intended for network managers familiar with network Do not service any product except as explained in the system documentation. . DGS-3120-24TC: 20 Ethernet 10/100/1000 Ports + 4 combo xStack® DGS-3120 Series Layer 3 Managed Gigabit Ethernet Switch Web UI Reference This manual is intended for network managers familiar with network can use 802.1d GVRP address, or 802.1ad service provider GVRP address. xStack® DGS-3120 Series Layer 3 Managed Gigabit Switch Hardware in the manual. Do not service any product except as explained in the system documentation. o . DGS-3120-24TC: 20 Ethernet 10/100/1000 Ports + 4 combo