Ethertone WT2100 has multiple function modes including network tester, Ethernet impairment emulator and redundant link tester. All function modes can be switched flexibly and quickly. The Ethernet Impairment Emulator combines comprehensive network emulation to enable you to generate latency, misorder packets, loss of packets, repeated, errored and modified packets, background traffic and bandwidth control. Ethertone Network Tester can set up traffic load based on port or stream, with up to 64 streams per port, supports 8-port standard mode and 24-port basic mode, and supports RFC2544 testing. Redundant Link Tester provides automatic link on-off switching and accurate switching time measurement capability, which can realize automatic alternating switching of primary and backup links, with a measurement accuracy of 20ns, and provides automatic redundant link cyclic on-off function.