I have a network with 3x SG300-52p switches and 3x SG300-28PP switches.  All are set as L3 even though I only wound up using them as L2.  I have a VPN set up in my firewall and I'm able to connect in.  From my VPN connection I'm able to connect to th...

We have a network of 6 switches and are adding a 7th.  5 of the existing 6 are SG300 units and 1 is an old L3 Catalyst which is currently the gateway.  We tried to add another SG300-52P today but whenever we plug it in, the rest of the switches stop ...