The SmartSwitch 2000 Chassis View

SmartSwitch 2000 Þrmware version 4.00.08 supports the pre-standard IEEE 802.1Q draft speciÞcation for port-based VLANs.

NOTE

For SmartSwitch 2000 Þrmware versions 4.00.08 and above, HSIM-F6 modules cannot be installed in a SmartSwitch 2000 that is operating in 802.1Q mode.

What is a VLAN?

A Virtual Local Area Network (VLAN) is a logical group of devices that function as a single Local Area Network segment (broadcast domain). Devices comprising a VLAN may be (physically) widely separated, allowing users located in separate areas or connected to separate ports to belong to a single VLAN group. Users assigned to a VLAN can send and receive broadcast and multicast trafÞc as though they were all physically connected to a single network segment. VLAN-capable switches isolate broadcast and multicast trafÞc received from VLAN groups, and contain broadcasts and multicasts from members of a VLAN within that group.

What is an 802.1Q Port-Based VLAN?

Switches that support the pre-standard IEEE 802.1Q draft speciÞcation for port-based VLANs act by classifying frames into VLAN membership. Usually, VLAN classiÞcation is based on tag headers (VLAN tags) in the headers of data frames. The tag header is inserted into the frame directly after the Source MAC address Þeld. A four-byte Þeld in the tag header is used as the VLAN identiÞer. These VLAN tags are added to data frames by the switch as the frames are transmitted and/or received by certain ports, and are later used to make forwarding decisions by the switch and other 802.1Q switches. In the absence of a VLAN tag, a frame is assigned VLAN membership according to the VLAN conÞguration of the switch port that receives the frame.

About 802.1Q VLAN Configuration and Operation

An 802.1Q VLAN is deÞned by assigning it a unique identiÞcation number (the VLAN ID) and an optional name. The VLAN ID is used to identify data frames that originate from, and are intended for, the ports assigned to the VLAN. Up to 64 VLANs may be created, with VLAN IDs ranging from 2-4094. VLAN ID 1 is reserved for the Default VLAN.

Ports on 802.1Q switches are assigned membership in a VLAN by associating a VLAN ID with each port on the switch. The VLAN ID is combined with the portÕs identiÞcation (e.g., device X port X) to form the Port VLAN ID (PVID).

Managing the Hub

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Cabletron Systems 2000 What is a VLAN?, What is an 802.1Q Port-Based VLAN?, About 802.1Q Vlan Configuration and Operation

2000 specifications

Cabletron Systems was a prominent company in the networking and communications industry during the late 20th century, and by the year 2000, it had established itself as a leader in providing high-performance networking solutions. The company was known for its innovative approach to network architecture and its commitment to delivering reliable products that enabled seamless connectivity in various environments.

One of the primary features of Cabletron Systems in 2000 was its advanced networking technologies, including Local Area Network (LAN) and Wide Area Network (WAN) solutions. The company specialized in developing multi-layer switches that could efficiently manage traffic and deliver high-speed data transfer. Their products were particularly popular in enterprise settings, where network performance and reliability were paramount.

Cabletron's solutions included a range of products, from Ethernet switches to routers, which were designed with scalability and flexibility in mind. This allowed businesses to adapt their networks to accommodate growth, without the need for a complete overhaul of their infrastructure. The company’s Integrated Networking Architecture (INA) was a significant innovation during this period, enabling efficient communication and management of diverse network resources.

Another major characteristic of Cabletron Systems was its commitment to interoperability. The company’s products were designed to be compatible with several industry standards, ensuring that organizations could easily integrate Cabletron solutions into their existing networks. This focus on compatibility helped to foster collaboration among different devices and systems, further enhancing network efficiency.

Security was also a key feature of Cabletron’s offerings in 2000. With growing concerns about data breaches and unauthorized access, the company incorporated advanced security measures into its products. These features included robust authentication protocols, encryption options, and secure management interfaces, which helped safeguard sensitive data during transmission.

Customer support and service were paramount to Cabletron Systems' business model. The company provided extensive resources, including training and technical support, to ensure that customers could maximize the potential of their networking solutions. This dedication to customer satisfaction contributed significantly to Cabletron’s reputation in the marketplace.

In summary, Cabletron Systems in 2000 emerged as a frontrunner in the networking industry, characterized by its innovative technologies, commitment to interoperability, emphasis on security, and strong customer support. Their products and solutions were designed to empower businesses, helping them achieve greater efficiency, scalability, and reliability in their network operations.