The MAC address table in the AT-FS705E FC Series and AT-FS706E FC Series switches can store up to 4,000 MAC addresses. To prevent the table from becoming filled with addresses of end nodes that are no longer active, the switch has a MAC address aging timer. This timer will delete a MAC address from the table if it does not see a frame from the end node with the address on any port after five minutes (300 seconds). The aging timer also helps to ensure that the table is correct should an end node be moved from one port on the switch to another port.

Store and Forward

The Ethernet switch uses store and forward as the method for receiving and transmitting frames. When a Ethernet frame is received on a switch port, the switch does not retransmit the frame out the destination port until it has received the entire frame and stored the frame in its memory buffer. It then examines the frame to determine if it is a valid frame. Invalid frames, such as fragments, are discarded by the switch. In this manner, the switch ensures that only valid frames are transmitted out its ports and that damaged frames are not propagated on your network.

Flow Control and Backpresure

In order for an Ethernet switch to maintain the orderly movement of data between the end nodes that are connected to its ports, it will occasionally need to signal an end node to stop sending data. This can occur under several situations. For example, when two end nodes are operating at different speeds, the switch, while transferring data between the nodes, might need to instruct the faster end node to stop transmitting data to allow the slower end node to catch up. An example of this situation would be when a server operating at 100 Mbps is sending data to a workstation operating at only 10 Mbps.

Another situation when a switch might need to stop the transmission of data from an end node is if two end nodes are vying for the same switch port at the same time. An example of this would be if two workstations were attempting to send data to the same network printer simultaneously. The switch could allow only one workstation to send out the port to the printer, and it would need to instruct the other workstation to delay data transmission.

To some degree, these conflicts are avoided by the switch’s port buffers. These buffers are used to store data when a port is either already busy transmitting other data or when a transmitting port on a switch is operating at a slower speed than the port on the switch receiving data.

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Allied Telesis ATFS705EFCSC60 manual Store and Forward, Flow Control and Backpresure
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ATFS705EFCSC60 specifications

The Allied Telesis ATFS705EFCSC60 is a robust and feature-rich network switch designed for small to medium-sized enterprises. Combining advanced networking technologies with versatility, this switch caters to the increasing demands for efficient and reliable network performance.

One of the main features of the ATFS705EFCSC60 is its support for Ethernet networking with a variety of port configurations. This switch features five 10/100/1000 Mbps Ethernet ports, providing high-speed data transmission capabilities. The inclusion of a gigabit capability ensures that network bottlenecks are minimized, enabling smooth data flow between connected devices, making it ideal for bandwidth-intensive applications such as video conferencing and large file transfers.

Moreover, the ATFS705EFCSC60 excels in Layer 2 switching capabilities. It supports vital functionalities like VLAN (Virtual Local Area Network) support, allowing network administrators to segment their network into different logical sections. This segmentation enhances security, reduces broadcast domains, and improves overall network performance. The switch also supports Spanning Tree Protocol (STP) and Rapid Spanning Tree Protocol (RSTP) to prevent loops within the network topology, ensuring reliable redundancy.

Another standout feature of the ATFS705EFCSC60 is its advanced management capabilities. It provides web-based management interfaces, which facilitate easy configuration and monitoring of the network switch. Network administrators can also utilize SNMP (Simple Network Management Protocol) for remote monitoring, allowing for real-time insights into the performance and health of the switch.

Power over Ethernet (PoE) support is another significant advantage of this switch. It allows the switch to deliver power to connected devices such as IP cameras, VoIP phones, and wireless access points through the Ethernet cable, eliminating the need for additional power sources. This feature simplifies installation and reduces clutter, making it an excellent choice for environments where power outlets are limited.

In terms of build and design, the ATFS705EFCSC60 is designed for reliability and durability. It features a robust chassis that can withstand various environmental conditions, making it suitable for different deployment scenarios. The switch’s fanless design also ensures silent operation, making it ideal for office environments.

In summary, the Allied Telesis ATFS705EFCSC60 is a high-performance network switch that blends performance, reliability, and advanced features. Its support for gigabit Ethernet, VLAN configuration, PoE capabilities, and comprehensive management options make it an excellent choice for businesses looking to enhance their network infrastructure. Whether used in a growing enterprise or as part of a point solution, the ATFS705EFCSC60 presents itself as a valuable asset in modern networking.
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