Switch Management and Operating Concepts

VLANs

VLANs allow you to group some physical ports as if they were on the same LAN. VLANs can be created either statically or dynamically:

•Static VLAN—This VLAN is manually configured on the switch.

•Dynamic VLAN—This VLAN uses GVRP (GARP VLAN Registration Protocol) to enable ports to dynamically join a VLAN group.

VLANs reduce traffic because traffic between VLANs is restricted. Bridges forward unicast, multicast, and broadcast traffic only on LAN segments that serve the VLAN to which the traffic belongs.

The switch supports two kinds of VLANs:

•Port based VLAN—These VLANs are defined by the physical port connections to the switch and are restricted to the number of ports in the switch. They use untagged frames.

•IEEE 802.1Q VLAN—These VLANS are based on a packet-tagging scheme. Packets may be tagged or untagged. A tagged packet's membership in an 802.1Q VLAN is determined by a tag that is inserted in the packet header by the switch or an end node indicating the VLAN number that the packet belongs to. Untagged packets are treated as if they were in a port based VLAN, where a connection to one of the switch's physical ports determines VLAN membership.

Physical ports can belong to only one VLAN as an untagged port, but can belong to more than one 802.1Q VLAN as a tagged port.

Initially, all ports belong to a special VLAN called “default.” This default VLAN is a IEEE802.1Q VLAN, which has the following unique characteristics:

•The name and the type fields are read-only.

•It cannot be deleted.

•All ports can be deleted from this VLAN.

•Its VID is 1, which cannot be changed.

All user-configured VLANs have the following characteristics:

•The size of VLAN name field is 32 bytes.

•Ingress checking defaults to on.

•Up to 32 static VLANs can be configured.

The switch supports a maximum of 255 VLANs (32 static, the rest dynamic).

Port-Based VLANs

A port-based VLAN is the easiest type to configure on the switch because you only need to specify the following:

•VLAN name

•Member ports

Intel® NetStructure™ ZT 8101 10/100 Ethernet Switch User’s Manual

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Intel ZT 8101 10/100 user manual Port-Based VLANs
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ZT 8101 10/100 specifications

The Intel ZT 8101 10/100 is a highly regarded network interface controller designed for efficient data communication in both home and enterprise environments. This versatile chip offers robust support for various networking technologies, making it suitable for a wide range of applications.

One of the most significant features of the Intel ZT 8101 is its capability to operate at both 10 Mbps and 100 Mbps, allowing for seamless integration into existing networks. This dual-speed functionality ensures that users can enjoy the benefits of faster data transfer rates while still maintaining compatibility with legacy hardware. The device automatically detects the network speed, facilitating a plug-and-play experience that minimizes user intervention.

The Intel ZT 8101 utilizes advanced features such as full-duplex support, which enables simultaneous data transmission and reception. This capability significantly enhances network efficiency and maximizes throughput, making it ideal for environments with high data traffic. Moreover, the chip employs sophisticated packet processing algorithms to prioritize data, reducing latency and ensuring smoother communication.

In terms of power efficiency, the Intel ZT 8101 is designed to consume minimal power, making it a suitable choice for energy-conscious applications. Its low power consumption allows for more efficient operations, contributing to overall system stability and longevity. Additionally, it incorporates power management features that can dynamically adjust the power usage based on network demand.

Another notable characteristic is the integration of hardware-based flow control, which helps prevent data packet loss during high-utilization periods. This capability is essential for maintaining the integrity of data transmission in busy network environments. The chip’s robust error detection and correction mechanisms further enhance data reliability, minimizing the chances of transmission errors.

The Intel ZT 8101 supports various network standards, including IEEE 802.3 and IEEE 802.3u, ensuring compatibility with a wide range of Ethernet devices. Its flexibility makes it an excellent choice for network upgrades, expansions, or new installations, allowing users to tailor their network infrastructure according to specific needs.

In summary, the Intel ZT 8101 10/100 network interface controller stands out for its dual-speed support, energy efficiency, and advanced networking features. Whether for home users looking to improve their network performance or businesses seeking reliable data communication solutions, the ZT 8101 represents a compelling choice that combines technology, reliability, and efficiency. As network demands continue to evolve, this Intel chip remains a fundamental component in many networking scenarios.
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