Chapter 13: Setting Internet Group Management Protocol (IGMP) Snooping

the switch floods the multicast packets on all of the ports except those that receive the packets.

Host Topology— Specifies the IGMP host topology. Choose between “Single” which indicates a single host per port and “Multicast” which indicates multiple hosts per port. Select the single-host per port setting when the switch has one-host-node per port. Select the multiple setting when the switch has more than one host-node per port. By default, the switch is set to “Single.”

Host/Router Timeout— Indicates the time, in seconds that the switch times out when it finds inactive host nodes and multicast routers. The range is from 0 to 86,400 seconds (24 hours). The default is 260 seconds.Setting the timeout to zero (0) disables the timer.

Maximum Groups— Specifies the maximum number of multicast addresses the switch is allowed to learn. The range is 0 to 255 multicast addresses. If your network has a large number

of multicast groups, use this parameter to limit the number of multicast groups the switch supports.The default is 64.

Router Ports Mode— Specifies ports that are connected to multicast routers either manually or automatically. Manually specifying multicast router ports deactivates auto-detect. To reactivate auto-detect, select “Automatic.” Choose between “Manual” and “Automatic.”

Router Ports— Specifies ports that are manually connected to multicast routers. Manually specifying multicast router ports deactivates auto-detect.

4.Click Apply.

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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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