У вашего броузера проблема в совместимости с HTML5
Let’s assume that we want to configure two Huawei 3-layer switches, which are connected via Ethernet link. Both switches have PCs connected to them. We want to allow PC1 to be able to reach PC2 and PC3 to be able to reach PC4.To do so, we need to add two different VLANs, configure Ethernet trunk between switches and add PCs to the correct VLAN.