Hi Everyone,   I need some support for connecting two different networks together. Below is the diagram of network, I want to connect to both network 192.168.128.xxx and 10.1.40.xxx from a PC connected to SW3.  Currently I have a Layer 3 switch (SG 3...

Hi all, Please take a look at the attachment. When I plug a cable coming from another switch with vlan  10.1.40.xxx to the vlan 20 of sw1 , my network with 192.168.128.xxx  of sw2 goes down. When i unplug the cable it works again.   can anyone help m...