D-Link DES-3326 User Manual page 66

DES-3326 Layer 3 Fast Ethernet Switch User's Guide
a network device performing a routing function
between the VLANs.
2. The DES-3326 supports only IEEE 802.1Q VLANs.
The port untagging function can be used to remove
the 802.1Q tag from packet headers to maintain
compatibility with devices that are tag-unaware.
3. The switch's default - in both Layer 2 Only mode
and IP Routing mode - is to assign all ports to a
single 802.1Q VLAN named DEFAULT_VLAN .
4. The DEFAULT_VLAN has a VID = 1.
interface called System in the IP interface entry
menu also has a VID = 1, and therefore corresponds
to the DEFAULT_VLAN.
5. There is no difference in the creation, deletion,
configuration, or editing of 802.1Q VLANs whether
the switch is in Layer 2 Only, or IP Routing
mode, except that once assigned an IP interface, a
VLAN cannot be deleted until the IP interface is
deleted.
6. There is a difference in the behavior of VLANs
when the switch is in Layer 2 Only or IP Routing
mode. In Layer 2 Only mode, network resources
cannot be shared across VLANs. In IP Routing
mode, network resources are shared via routing.
7. The switch allows the assignment of an IP interface
to each VLAN, in IP Routing mode. The VLANs
must be configured before setting up the IP
interfaces. In addition, an IP addressing scheme
must be determined.
8. A VLAN that is not assigned an IP interface will
behave as a layer 2 VLAN – and IP routing will not
52
Switch Management and Operating Concepts
An IP