Configuring the ECN330-switch
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6.12.1.2 Forwarding Tagged/Untagged Frames
To create a small port-based VLAN for devices attached directly to a single
ECN330-switch, assign ports to the same untagged VLAN. Also ensure that
VLAN tagging is not supported or is disabled on the attached devices. However,
to participate in a VLAN group that crosses several switches, 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
ECN330-switch is therefore capable of passing tagged or untagged frames.
When forwarding a frame from the ECN330-switch along a path that contains
any VLAN-compliant devices, the ECN330-switch should include VLAN tags.
When forwarding a frame from the ECN330-switch along a path that does not
contain any VLAN-compliant devices (including the destination host), the
ECN330-switch must first strip off the VLAN tag before forwarding the frame.
When the ECN330-switch receives a tagged frame, it will pass this frame onto
the VLAN(s) indicated by the frame tag. However, when the ECN330-switch
receives an untagged frame from a device that does not support VLANs, it first
decides where to forward the frame, and then inserts a VLAN tag reflecting the
ingress port’s default VID.
6.12.1.3 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)
Web – Click VLAN, 802.1Q VLAN, GVRP Status. Enable or disable GVRP, click
Apply
Figure 109 Enabling GVRP
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