KB.15.15

Figure 1 Comparing per-port VLAN options with and without GVRP

Table 1 Per-port VLAN configuration options

Effect on port participation in designated VLANParameter

Allows the port to join multiple VLANs.Tagged

Untagged

• Allows VLAN connection to a device that is configured for an untagged VLAN instead of

a tagged VLAN.

• A port can be an untagged member of only one port-based VLAN.

• A port can be an untagged member of only one protocol-based VLAN for any given

protocol type.

For example, if the switch is configured with the default VLAN plus three protocol-based

VLANs that include IPX, then port 1 can be an untagged member of the default VLAN and

one of the protocol-based VLANS.

No:

When the switch is not GVRP-enabled; prevents the port from joining that VLAN.

No or Auto

Auto: When GVRP is enabled on the switch; allows the port to dynamically join any

advertised VLAN that has the same VID.

Prevents the port from joining the VLAN, even if GVRP is enabled on the switch.Forbid

Configuring port-based and protocol-based VLAN parameters

In the factory default state, all ports on the switch belong to the port-based default VLAN

(DEFAULT_VLAN; VID=1), and are in the same broadcast/multicast domain.

The default VLAN is also the Primary VLAN. You can configure up to 255 additional static VLANs

by adding new VLAN names, and then assigning one or more ports to each VLAN.

The switch accepts a maximum of 2048 VLANs with VIDs numbered up to 4094 This must include

the default VLAN and any dynamic VLANs the switch creates if you enable GVRP.

NOTE: Each port can be assigned to multiple VLANs by using VLAN tagging.

Viewing a switch's VLAN configuration

The show vlans command lists the VLANs currently running in the switch, with VID, VLAN name,

and VLAN status. Dynamic VLANs appear only if the switch is running with GVRP enabled, and

one or more ports has dynamically joined an advertised VLAN. In the default configuration, GVRP

is disabled.

Syntax:

show vlans

Maximum VLANs to support Shows the number of VLANs the switch can

currently support.

Default is 256, Maximum 2048

16 Static Virtual LANs