Installation manual

3-189
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Configuring VLAN Behavior for Interfaces
You can configure VLAN behavior for specific interfaces, including the 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.
Command Attributes
• PVID –
VLAN ID assigned to untagged frames received on the interface. (Default: 1)
- If an interface is not a member of VLAN 1 and you assign its PVID to this VLAN, the
interface will automatically be added to VLAN 1 as an untagged member. For all other
VLANs, the PVID must be defined first, then the status of the VLAN can be configured
as a tagged or untagged member.
• Acceptable Frame Type – Sets the interface to accept all frame types, including tagged
or untagged frames, or only tagged frames. When set to receive all frame types, any
received frames that are untagged are assigned to the default VLAN. (Options: All,
Tagged; Default: All)
• Ingress Filtering – Determines how to process frames tagged for VLANs for which the
ingress port is not a member. Ingress Filtering is always enabled. (Default: Enabled)
- Ingress filtering only affects tagged frames.
- If ingress filtering is disabled and a port receives frames tagged for VLANs for which
it is not a member, these frames will be flooded to all other ports (except for those
VLANs explicitly forbidden on this port).
- If ingress filtering is enabled and a port receives frames tagged for VLANs for which
it is not a member, these frames will be discarded.
-
Ingress filtering does not affect VLAN independent BPDU frames, such as GVRP or
STP. However, they do affect VLAN dependent BPDU frames, such as GMRP.
• GVRP Status – Enables/disables GVRP for the interface. GVRP must be globally
enabled for the switch before this setting can take effect. (See “Displaying Bridge
Extension Capabilities” on page 3-15.) When disabled, any GVRP packets received on
this port will be discarded and no GVRP registrations will be propagated from other
ports. (Default: Disabled)
• GARP Join Timer
16
– The interval between transmitting requests/queries to participate
in a VLAN group. (Range: 20-1000 centiseconds; Default: 20)
16. Timer settings must follow this rule: 2 x (join timer) < leave timer < leaveAll timer