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Cisco IE-3400H-24T Layer 3 VLAN Configuration

ZF1
Level 1
Level 1

Hello, 

I have a Cisco IE-3400H-24T, with a number of ports connected to a 120.95.11.x network and other ports connected to a 192.168.1.x network. I have assigned these ports in the VLAN configuration as VLAN20 for 120.95.11.x and VLAN10 for 192.168.1.x. I have also assigned IP address 192.168.1.1 to VLAN10 and 120.95.11.5 to VLAN20 in the SVI settings. 

Most of the devices are communicating between subnets just fine, but I have one that is giving me an issue. I have many questions:

Will SVI configuration enable layer 3 communication and implicitly route VLAN10 & VLAN20 together?

Do I need to use static routing to perform this successfully?

VLAN20 is the same IP address as the router (120.95.11.5) is this problematic? Should VLAN20 be set for 120.95.11.1?