I will explain the scenario. I have total 3 sg300 connected in which Sw A is acting as L3 and Sw B and Sw C in L2 mode. I have Vlans 10, 20, and 30 across all and vlan 1 as my mgt vlan. I have configured vlan 1 IP as192.168.10.1, 192.168.10.2, 192.16...