NETGEAR M4350-24F4V 24-Port 10G SFP+ Managed AV Network Switch - Manual (Page 928)

VLAN routing interfaces
VLANs divide broadcast domains in a LAN environment. When hosts in one VLAN must
communicate with hosts in another VLAN, the traffic must be routed between them.
This is known as inter-VLAN routing. On the switch, it is accomplished by creating Layer
3 interfaces (switch virtual interfaces [SVI]).
When a port is enabled for bridging (the default) rather than routing, all normal bridge
processing is performed for an inbound packet, which is then associated with a VLAN.
Its MAC destination address and VLAN ID are used to search the MAC address table.
If routing is enabled for the VLAN, and the MAC destination address of an inbound
unicast packet is that of the internal bridge-router interface, the packet is routed. An
inbound multicast packet is forwarded to all ports in the VLAN, plus the internal
bridge-router interface, if it was received on a routed VLAN.
Because a port can be configured to belong to more than one VLAN, VLAN routing
might be enabled for all of the VLANs on the port, or for a subset. VLAN routing can be
used to allow more than one physical port to reside on the same subnet. It could also
be used when a VLAN spans multiple physical networks, or when additional segmentation
or security is required. A port can be either a VLAN port or a router port, but not both.
However, a VLAN port can be part of a VLAN that is itself a router port.
Complete these steps to configure a switch to perform interVLAN routing for IPv4:
1. Use the IP Configuration page to enable IPv4 routing on the switch.
By default, IPv4 routing is enabled. For more information about this step, see Manage
the global IPv4 routing settings on page 398.
2. Determine the IP addresses that you want to assign to the VLAN interface on the
switch.
For the switch to be able to route between the VLANs, the VLAN interfaces must be
configured with an IP address. When the switch receives a packet destined for another
subnet or VLAN, the switch looks at the routing table to determine where to forward
the packet. The packet is then passed to the VLAN interface of the destination. It is
then sent to the port where the end device is attached.
3. Use the VLAN Static Routing Wizard page to create a routing VLAN, configure the
IP address and subnet mask, and add the member ports.
For more information about this step, see Create a routing VLAN with the VLAN
static routing wizard on page 426.
Main User Manual 928 Configuration Examples
Fully Managed Switches M4350 Series Main User Manual