I've connected recently on an SG500X and an SG500  several devices and all of a sudden the port VLAN settings change to default, PVID1, and Tagged all available Vlans. In an instance, I connected a Yeastar PBX on an untagged vlan40 port, and all of a...

Looking to add a redundant core switch to our infrastructure.We are a small business with 80 computers and 8 servers. We already utilise SG500 The current Setup is a Tier2 architecture.Firewall X0 (VLAN50) corporate to 4x SG500 stack - 7 servers (app...

I've created 2 VLAN's (200,400) for data and voice on 2 independent switchesThe data switch is connected to the X0 port on the firewall and a Windows DHCP server where all users receive IPs.The voice switch is connected to the X3 port on the firewall...