Netgear GSM7224v2 - 24-Port Layer 2 Managed Gigabit Switch User Manual

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Chapter 4.  Routing 
 
ProSafe® Gigabit L3 Managed Stackable Switches Software Administration Manual 
VLAN
You can configure ProSafe® Managed Switches software with some ports supporting VLANs 
and some supporting routing. You can also configure the software to allow traffic on a VLAN 
to be treated as if the VLAN were a router port.
When a port is enabled for bridging (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 (MAC DA) and VLAN ID are used to search the MAC address table. If 
routing is enabled for the VLAN, and the MAC DA 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.
Since 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. This section shows how to configure the NETGEAR switch to support VLAN 
routing. A port can be either a VLAN port or a router port, but not both. However, a VLAN port 
may be part of a VLAN that is itself a router port.
From the VLAN link, you can access the following pages: