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ONFIGURING
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WITCH
2-56Configuring VLAN Behavior for Interfaces
You can configure VLAN behavior for specific interfaces, including
default VLAN identifier (PVID), accepted frame types, ingress filtering,
GVRP status, and GARP timers.
Command Usage
•GVRP – GARP VLAN Registration Protocol defines a way for
switches to exchange VLAN information in order to automatically
register VLAN members on interfaces across the network.
•GARP – Group Address Registration Protocol is used by GVRP to
register or deregister client attributes for client services within a
bridged LAN. The default values for the GARP timers are
independent of the media access method or data rate. These values
should not be changed unless you are experiencing difficulties with
GVRP registration/deregistration.
Fields and Attributes
•PVID – The VLAN ID assigned to untagged frames received on the
interface. If the (CLI) switchport mode is set to trunk (see page 3-99),
the PVID will be inserted into all untagged frames sent from a tagged
port. (Default: 1.)
•Acceptable Frame Type – Sets the interface to accept all frame types
or only tagged frames. If only tagged frames are accepted, the switch
will only accept frames if the frame tag matches a VLAN to which this
interface has been assigned. (Default: All.)
•Ingress Filtering – If ingress filtering is enabled, incoming frames for
VLANs which do not include this ingress port in their member set will
be discarded at the ingress port. This will not affect VLAN
independent BPDU frames, such as GVRP or STP. (Default:
Disabled.)