Chapter 4: Setting Port Parameters

4.The following fields are displayed:

Port— Indicates the port number.

Type— Specifies the if the port is fiber, indicated by 1000-FX, or copper, indicated by 100-FX.

Status— Indicates if the port is enabled or disabled. The default setting is “Enabled.” Disabling ports turns off their receivers and transmitters so that they cannot forward traffic.

Link— Indicates the port has successfully connected to a port on another switch or unit.

Negotiation— Indicates Autonegotiation. By default, Autonegotiation is enabled.

Speed— Specifies the speed of the port. The default setting is “1000-FX” for 1000Mbps. The other possible options are “10” for 10Mbps and “100” for 100Mbps.

Duplex— Indicates the duplex mode of the twisted pair ports or Auto Negotiation. The three settings are half, full, and Auto Negotiation.

Polarity— Indicates the port’s wiring configuration is MDI (medium dependent interface) or MDI-X (medium dependent interface crossover). This setting only applies to a twisted pair port that is operating at 10 or 100 Mbps.

Note

You can enable or disable backpressure on ports where you disabled Auto-Negotiation and set the speeds and duplex modes manually to 10 or 100 Mbps in half-duplex mode.

Back Pressure— Indicates if back pressure is enabled or disabled on a port. Backpressure is used by ports during periods of packet congestion to temporarily stop their network counterparts from transmitting more packets. This prevents a buffer overrun and the subsequent loss and retransmission of network packets. A port initiates backpressure by transmitting on the shared link to cause a data collision, which causes its link partner to cease transmission. The default setting is “Disabled.”

Back Pressure Limit— Indicates the threshold level for back pressure on a port. Specifies the number of cells for back pressure. The default value is 7935 cells.

Flow Control— Indicates if flow control (send and receive) is enabled or disabled on a port. When flow control is enabled, a port sends pause packets when it reaches the point of packet congestion. Also, the port stops transmitting packets when it receives pause packets from its local or remote counterpart. When flow control is disabled, the port sends pause packet regardless of

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Allied Telesis AT-9000/52, AT-9000/28SP manual Setting Port Parameters
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AT-9000/52, AT-9000/28SP, AT-9000/28 specifications

The Allied Telesis AT-9000/28 is a versatile and robust network switch designed for organizations seeking to enhance their networking capability. This Layer 2 managed switch delivers a high degree of performance and reliability, making it an ideal choice for businesses that require a seamless network experience.

One of the main features of the AT-9000/28 is its 28 ports, which include 24 Fast Ethernet ports and 4 Gigabit Ethernet uplink ports. This allows for flexible network configuration and scalability, accommodating both wired and wireless devices efficiently. The switch also supports auto-negotiation and auto-MDI/MDI-X, which simplifies installation and connectivity by automatically detecting and configuring the appropriate settings.

The AT-9000/28 employs advanced switching technologies, such as IEEE 802.1Q VLAN tagging, which enables the segregation of traffic for improved security and performance. This feature is crucial for businesses that require data isolation between different departments or user groups. In addition, the switch supports quality of service (QoS) protocols, allowing for traffic prioritization. This is particularly beneficial for organizations that handle multimedia applications or VoIP services that demand reliable bandwidth.

Another significant characteristic of the AT-9000/28 is its support for port mirroring. This capability is essential for network monitoring and troubleshooting, as it allows administrators to track and analyze network traffic efficiently. Furthermore, the switch supports multiple user authentication methods, including RADIUS and TACACS+, thus enhancing network security.

The AT-9000/28 is built with energy efficiency in mind, featuring Energy Efficient Ethernet (EEE) technology. This reduces power consumption during periods of low traffic without compromising performance, which aids in lowering overall operational costs.

In terms of management, the AT-9000/28 offers versatile management options, including a web-based GUI, Command Line Interface (CLI), and SNMP support. This flexibility enables network administrators to configure, monitor, and troubleshoot the switch easily.

Overall, the Allied Telesis AT-9000/28 is a reliable switch well-suited for a variety of network environments. Its combination of performance, security features, and energy efficiency makes it an excellent choice for organizations looking to optimize their network infrastructure. With robust capabilities and advanced technologies, the AT-9000/28 stands out as a valuable addition to any networking setup.
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