Download for DGS-3000-20L Manual: How to access switch interface How to change switch’s ip address How to enable loopback detection How to enable VLAN on switch How to set LACP(Link Aggregation) How to set RSTP on switch How to upgrade switch firmware Download Firmware: 1.01.005 Hardware: A1 Download Firmware: 2.00.006 Hardware: A2 Download Firmware: 3.00.006 Hardware: Bx