Allied Telesis AT-8000S manual Stacking Chain Topology, Stacking Members and Unit ID

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Stacking

Stacking Chain Topology

Figure 20: Stacking Ring Topology

Most difficulties incurred in Ring topologies occur when a device in the ring becomes non-functional, or a link is severed. In a stack, the system automatically switches to a Stacking Failover topology without any system downtime. An SNMP message is automatically generated, but no stack management action is required. However, the stacking link or stacking member must be repaired to ensure the stacking integrity.

After the stacking issues are resolved, the device can be reconnected to the stack without interruption, and the Ring topology is restored.

Stacking Chain Topology

If a failure occurs in the stacking topology, the stack reverts to Chain Stacking Topology. In the Chain topology, devices operate in a chain formation. The Stacking Master determines where the packets are sent. Each unit is connected to two neighboring devices, except for the top and bottom units.

Stacking Members and Unit ID

Stacking Unit IDs are essential to the stacking configuration. The stacking operation is determined during the boot process. The Operation Mode is determined by the Unit ID selected during the initialization process. For example, if the user selected stand-alone mode, the device boots as a stand-alone device.

The device units are shipped with the default Unit ID of the stand-alone unit. If the device is operating as a standalone unit, all stacking LEDs are off. Once the user selects a different Unit ID, the default Unit ID not erased, and remains valid, even if the unit is reset.

Unit ID 1 and Unit ID 2 are reserved for Master enabled units. Unit IDs 3 to 6 can be defined for stack members.

When the Master unit boots or when inserting or removing a stack member, the Master unit initiates a stacking discovering process.

Note

If two members are discovered with the same Unit ID the stack continues to function, however only the unit with the older join time joins the stack. A message is sent to the user, notifying that a unit failed to join the stack.

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Contents Allied Telesis AT-8000S Installation GuidePage Table of Contents Stacking Allied Telesis AT-8000S Switch Switch Installation GuideTable of Contents How This Guide is Organized Allied Telesis AT-8000S SwitchInstallation Guide PrefaceContacting Allied Telesis Contacting Allied TelesisSwitch Installation Guide Allied Telesis AT-8000SSwitchProduct Description Ieee 802.3 10Base-T Ieee 802.3u 100Base-TX FeaturesIeee Standards Product DescriptionAT-8000S/16 Back Panel AT-8000S/16 Front PanelAT-8000S/24 Back Panel AT-8000S/24 Front PanelAT-8000S/24POE Back Panel AT-8000S/24POE Front PanelAT-8000S/48 Back Panel AT-8000S/48 Front PanelAT-8000S/48POE Back Panel AT-8000S/48POE Front PanelLED Definitions Ports DescriptionMode LED Indications LED Description Mode LEDs24/48 Port Device Stacking LEDs Stacking LED Indications LED Description Port LEDs10/100 Base-T Fast Ethernet RJ-45 Port LEDs Port LEDs10/100Base-T Fast Ethernet RJ-45 Port LED Indications 10/100/1000 Base-T/Combo Ethernet RJ-45 Port LEDsPort Description LED Indication Combo Port LED Indications Port Description 24/48 Port Device SFP/Combo Port LEDsSFP Port LED Indications Port Description 24/48 Port Device System LEDs Power LEDDiagnostic LED Diagnostics LED Indications LED DescriptionStacking Ports LEDs Stacking Ports LEDsPreparing for Installation InstallationSafety Precautions Preparing for Installation InstallationUnpacking Site RequirementsUnpacking Essentials Installing the DeviceDesktop or Shelf Installation Package ContentsInstalling Rubber Feet Rack InstallationConnecting the Switch to a Terminal Connecting the DeviceConnecting the Device AC Power Connection Installation Understanding the Stack Topology StackingStacking Chain Topology Stacking Chain TopologyStacking Members and Unit ID StackingPress Return or Esc. to abort and enter prom Configuring StackingEnter unit working mode 1 standalone, 2 stacking Configuring StackingStatic IP Address and Subnet Mask Initial ConfigurationConfiguration Overview ConfigurationConfiguration Initial ConfigurationUser Name Device not operating correctly TroubleshootingCannot connect using Telnet, Web browser, or Snmp software Forgot or lost the passwordTroubleshooting Appendix A. Technical Specifications Pin Connections for the 10/100/1000 Ethernet Interface Technical SpecificationsCompliance Standards Cable, Port, and Pinout InformationTxRx 2+ TxRx 3+ TxRx 4+ Technical Specifications Laser Safety Notices Appendix B. Safety StatementsElectrical Safety Notices Electrical Safety Notices Safety StatementsAllied Telesis AT-8000SSwitch Safety Statements Allied Telesis AT-8000SSwitch Telecommunications Compliance Notices Telecommunications Compliance NoticesIndex
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AT-8000S specifications

The Allied Telesis AT-8000S series switches are a range of advanced Layer 2 Ethernet switches designed for efficient networking in various environments. Engineered with performance, reliability, and cost-effectiveness in mind, these switches are ideal for businesses seeking to enhance their network infrastructure.

One of the main features of the AT-8000S series is its high-speed data forwarding capabilities. With support for 10/100/1000 Mbps Ethernet ports, these switches provide fast and reliable connections, enabling seamless data transfer and enhanced communication between devices. The non-blocking switching architecture ensures that full bandwidth is available at all times, maximizing throughput and reducing latency in network traffic.

The AT-8000S series incorporates advanced Layer 2 switching technologies, such as VLAN support, allowing users to segment network traffic for improved performance and security. Virtual Local Area Networks (VLANs) help isolate sensitive data and reduce unnecessary broadcast traffic, enhancing the overall performance of the network.

Quality of Service (QoS) is another significant feature integrated into these switches, prioritizing different classes of network traffic. This functionality ensures that critical applications receive the necessary bandwidth and minimal latency, which is imperative for voice over IP, video conferencing, and other latency-sensitive applications.

In terms of network management, the AT-8000S series provides a variety of options, including an intuitive web-based interface, SNMP support, and the ability to manage switch configurations through console access. This flexibility allows network administrators to monitor performance and manage configurations easily.

The switches are built for durability, featuring a robust design suitable for deployment in various environments, including temperature-sensitive areas. Power over Ethernet (PoE) capability is also available in certain models, allowing network devices like IP cameras and wireless access points to receive power through the same cable as data, simplifying installation and reducing clutter.

Allied Telesis emphasizes security within the AT-8000S series, with features such as port security, DHCP snooping, and IEEE 802.1X authentication to safeguard against unauthorized access and potential threats.

Overall, the Allied Telesis AT-8000S series provides a comprehensive networking solution tailored for modern business needs, combining performance, flexibility, and security to support a growing array of applications and devices within the network.
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