VLAN Membership
VLAN implementation allows:
- Up to 256 VLANs in one switch.
- VLANs across multiple switches by using explicit or implicit tagging and the GARP/GVRP protocol defined in IEEE802.1p
and 802.1Q.
- An end station’s network interface card belong to multiple VLANs.
- A switch port to be associated with multiple VLANs.
DEFINITIONS OF VLAN MEMBERSHIP
VLAN implementation allows VLAN membership to be defined based on ports. Port-based VLANs are organized by physical port
number. For example, switch ports 1, 2, 4 and 6 can be grouped on VLAN, while server ports 3, 5, 7 and 8 can be on another
VLAN. Broadcasts from servers within each group would only go to the members of its own VLAN. This ensures that broadcast
storms cannot cause a network meltdown due to volumes of traffic.
VLAN MEMBERSHIP LEARNING
Port-based VLAN is defined using a static binding between a VLAN and its associated ports. The switch’s forwarding decision is
based on the destination MAC address and its associated port ID. Therefore, to make valid forwarding and flooding decisions, the
switch learns the relationship of the MAC address to its related port – and thus to the VLAN – at runtime.
REMOTE VLAN LEARNING
In addition to providing network management tools that allow network administrators to statically add and delete VLAN member
ports, the switch also supports GVRP (GARP VLAN Registration Protocol). GVRP allows for dynamic registration of VLAN port
members within switch and across multiple switches.
Other than supporting dynamic updating of registration entries in a switch, GVRP is used to communicate VLAN registration
information to other VLAN-aware switches, so that a VLAN member can cover a wide span of switches on a network.
GVRP allows both VLAN-aware workstations and switches to issue and revoke VLAN memberships. VLAN-aware switches
register an propagate VLAN membership to all ports that belong to the active topology of the VLAN.
VLAN CONFIGURATION
The LBG1000A switch provides a Local/Remote Management Console Interface for VLAN configuration and management
An SNMP-based VLAN MIB is also provided.
Intra-VLAN Communication
The LBG1000A switch supports intra-VLAN communication through hardware, as described in “Basic Functions” section.
Inter-VLAN Communication
The LBG1000A switch supports inter-VLAN communication using CPU-based routing software.
Содержание LBG1000A
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