Aricent VLAN (Virtual LAN) is a complete implementation of Port, tag and MAC-based VLAN software for switched LAN environments. It can be easily integrated with the Aricent TB/STP software for Transparent Bridging with Spanning Tree Algorithm and Protocol (STAP) support.

• Supports different types of tagged VLANs: Shared, Independent, and Hybrid VLANs, as per IEEE 802.1Q.
• Supports Port-based and MAC-based VLANs.
• Supports Ingress and Egress rules that define how to handle incoming and outgoing frames.
• Provides a set of GARP (Generic Attribute Registration Protocol) libraries, which can be used to build GARP applications.
• Supports automatic configuration and management of VLANs by means of GVRP (GARP VLAN Registration Protocol).
• Supports Extended filtering services using GMRP (GARP Multicast Registration Protocol).
• Supports Expedited traffic forwarding, using service classes of multiple levels of priorities.
• Provides interfaces to Transparent Bridge software with STAP support.
• Provides support for easy configuration of VLANs by the Network Administrator using SNMP.
• Exploits the VLAN features, if available in the hardware, for learning and forwarding of VLAN tagged frames.
• Multiple Spanning Tree Protocol, one per VLAN*
• Conforms to Aricent Architecture for Portability (FSAP2), thus ensuring highly portable code, which uses flexible buffer and timer management libraries.

Aricent VLAN reduces the time to market for OEMs and VARs who wish to incorporate the VLAN functionality into their switched-LAN products.

VLANs provide the following key benefits in a switched-LAN environment:

• Improved administration efficiency.
• Controlled Broadcast Activity.
• Enhanced network security.

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