User's Manual

VLAN Configuration
125
NXA-ENET24 - Software Management Guide
Forwarding Tagged/Untagged Frames
If you want to create a small port-based VLAN for devices attached directly to a single switch, you can assign
ports to the same untagged VLAN. However, to participate in a VLAN group that crosses several switches,
you should create a VLAN for that group and enable tagging on all ports.
Ports can be assigned to multiple tagged or untagged VLANs. Each port on the switch is therefore capable of
passing tagged or untagged frames. When forwarding a frame from this switch along a path that contains any
VLAN-aware devices, the switch should include VLAN tags. When forwarding a frame from this switch along
a path that does not contain any VLAN-aware devices (including the destination host), the switch must first
strip off the VLAN tag before forwarding the frame. When the switch receives a tagged frame, it will pass this
frame onto the VLAN(s) indicated by the frame tag. However, when this switch receives an untagged frame
from a VLAN-unaware device, it first decides where to forward the frame, and then inserts a VLAN tag
reflecting the ingress port’s default VID.
Enabling or Disabling GVRP (Global Setting)
GARP VLAN Registration Protocol (GVRP) defines a way for switches to exchange VLAN information in
order to register VLAN members on ports across the network. VLANs are dynamically configured based on
join messages issued by host devices and propagated throughout the network. GVRP must be enabled to
permit automatic VLAN registration, and to support VLANs which extend beyond the local switch. (Default:
Disabled).
Enabling or Disabling GVRP - Web
Click VLAN, 802.1Q VLAN, GVRP Status. Enable or disable GVRP, and click Apply.
Enabling or Disabling GVRP - CLI
This example enables GVRP for the switch.
Displaying Basic VLAN Information
The VLAN Basic Information page displays basic information on the VLAN type supported by the switch.
Displaying Basic VLAN Information - Web
Click VLAN, 802.1Q VLAN, VLAN Base Information.
FIG. 129 Web - Enabling GVRP
FIG. 130 CLI - Enabling GVRP
Field Attributes
•VLAN Version
Number:
The VLAN version used by this switch as specified in the IEEE 802.1Q standard.
Web only.
• Maximum VLAN ID: Maximum VLAN ID recognized by this switch.
• Maximum Number
of Supported VLANs
Maximum number of VLANs that can be configured on this switch.
FIG. 131
Web - Displaying Basic VLAN information