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Configuring the GbE Interconnect Switch Using the Web-Based Management Interface
Compaq ProLiant BL p-Class GbE Interconnect Switch User Guide 4-23
COMPAQ CONFIDENTIAL Codename: Vanilla Part Number: 263680-001 Last Saved On: 4/23/02 10:02 AM
GVRP is a Generic Attribute Registration Protocol (GARP) application that provides 802.1Q-
compliant VLAN pruning and dynamic VLAN creation on 802.1Q trunk ports. With GVRP,
the GbE Interconnect Switch can exchange VLAN configuration information with other
GVRP switches, prune unnecessary broadcast and unknown unicast traffic, and dynamically
create and manage VLANs on switches connected through 802.1Q trunk ports.
NOTE: Characteristics of a PVID include:
• By default, the PVID of all ports is the same as the VID of DEFAULT_VLAN, which is equal to 1.
• When a user creates an untagged 802.1Q VLAN and assigns a port, the PVID will be changed to
the VID of that 802.1Q VLAN.
• For a tagged port, the PVID will be the same as the VID of the IEEE 802.1Q VLAN to which this
port was first assigned.
• If the first IEEE 802.1Q VLAN to which the tagged port is assigned is deleted, the PVID will change
to that of the second IEEE 802.1Q VLAN to which the port was assigned.
• The PVID of a port can only be set to a VID of a VLAN for which the port is already a member.
You can change the following parameters:
• From and To—Select the range of ports to be included in the settings.
• PVID—Type the PVID. This tuning variable allows for subnetworks that are expected to
lose a large number of packets. The PVID is used by the port to tag outgoing, untagged
packets and to make filtering decisions about incoming packets. If the port is specified as
tagging, and an untagged packet is forwarded to the port for transmission, the port will
add an 802.1Q tag using the PVID to write the VID in the tag. When the packet arrives at
its destination, the receiving device uses the PVID to make VLAN forwarding decisions.
If the port receives a packet, and ingress filtering is enabled, the port compares the VID
of the incoming packet to its PVID. If the two are unequal, the port drops the packet. If
the two are equal, the port receives the packet.
• Ingress Filter—Select Off or On to specify the port that checks the VID of incoming
packets against its VID or PVID. If the two are equal, the port receives the packet. It the
two are unequal, the port drops the packet. This setting is used to limit traffic to a
single VLAN.
• GVRP—Select Off or On to enable or disable GARP VLAN Registration Protocol.
Click Apply after making changes to the settings.
NOTE: To save the configuration settings permanently, you must enter them into NVRAM using the
Save Changes option on the Maintenance menu. Refer to the section, “Saving Changes,” earlier in
this chapter.