ProLiant BL p-Class GbE Interconnect Switch Web-based Interface Reference Guide

Configuring the GbE Interconnect Switch using the Web-based Interface
• 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.
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The PVID of a port can only be set to a VID of a VLAN for which the port is already a
member.
GARP VLAN Registration Protocol (GVRP) is a Generic Attribute Registration Protocol
(GARP) application that provides 802.1Q-compliant VLAN pruning and dynamic VLAN
creation on 802.1Q tagged ports.
GVRP updates dynamic VLAN registration entries and communicates the new VLAN
registration information across the network. This feature allows stations to physically move to
other GbE Interconnect Switch ports and keep their original VLAN settings, without having
to reconfigure the VLAN settings on the GbE Interconnect Switch.
With GVRP, the GbE Interconnect Switch can
Exchange VLAN configuration information with other GVRP switches.
Prune unnecessary broadcast and unknown unicast traffic.
Dynamically create and manage VLANs on switches connected through 802.1Q tagged
ports.
The GbE Interconnect Switch provides oprions to enable or disable GVRP capability. If an
802.1Q tagged VLAN is enabled, but the GVRP is disabled, the only VLAN feature is static
VLAN registration entries. HP recommends backing up static VLAN register entries to the
configuration file.
Enabling Ingress Filtering on a Per Port Basis
If ingress filtering is enabled for a port, the interconnect switch will examine the VLAN
information in the packet header (if present) and decide whether or not to forward the packet.
The VID should match the PVID of that port, otherwise, that incoming packet is discarded.
If the packet is tagged with VLAN information, the ingress port will first determine if the
ingress port itself is a member of the tagged VLAN.
If the ingress port is not a member of the tagged VLAN, the packet is dropped.
If the ingress port is a member of the 802.1Q VLAN, the interconnect switch then
determines if the destination port is a member of the 802.1Q VLAN, the packet is
forwarded and the destination port transmits it to its attached network segment.
If the packet is not tagged with VLAN information, the ingress port tags the packet with its
own PVID as a VID (if the port is a tagging port). The interconnect switch then determines if
the destination port is a member of the same VLAN (has the same VID) as the ingress port.
If the destination port is not a member of the same VLAN, the packet is dropped.
If the destination port is a member of the same VLAN, the packet is forwarded and the
destination port transmits it on its attached network segment.
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