Spanning Tree

6

 

Configuring STP Status and Global Settings

 

 

 

 

 

•STP Operation Mode—Select one of the following STP modes:

-Classic STP—Operates according to the original IEEE 802.1D spanning tree protocol.

-Rapid STP—Is the default value and provides faster spanning tree convergence after a topology change than does classic STP.

•BPDU Handling—Bridge Protocol Data Units (BPDUs) are the messages exchanged between switches to calculate STP topology. Select the method of BPDU packet handling when the spanning tree is disabled on an interface:

-Filtering—Enables the port to discard BPDUs received on interfaces that are not enabled for STP.

-Flooding—Allows flooding of BPDUs received on non-spanning-tree ports to all other non-spanning-tree ports.

STEP 2 Specify the following bridge setting:

•Priority—The bridge priority value. When switches or bridges are running STP, each is assigned a priority. After exchanging BPDUs, the switch with the lowest bridge identifier becomes the root bridge. The bridge priority must be a multiple of 4096. If you specify a priority that is not a multiple of 4096, the priority is automatically set to the next lowest multiple of 4096. For example if you attempt to set the priority to any value between 0 and 4095, it will be set to 0. The default priority is 32768. The valid range is 0-61440.

•CST Bridge Max Age—The amount of time in seconds that a bridge waits before implementing a topological change. The valid range is 6-40 seconds. The default is 20 seconds.

•CST Bridge Forward Delay—The amount of time in seconds that a bridge remains in a listening and learning state before forwarding packets. The valid range is 4-30 seconds. The default is 15 seconds.

The following information appears in this section of the page:

•Hello Time—The interval at which a bridge sends configuration messages.

•Max Hops—The number of hops before a BDPU is discarded and the port information is aged out. The maximum hop count is set to 20 and is not configurable.

•Hold Time—The minimum time period, in seconds, that elapses between the transmission of Configuration BPDUs through a bridge port.

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SLM2008PTNA specifications

Cisco Systems SLM2008PTNA is a robust network switch designed specifically for small to medium-sized businesses. It operates with 8 Fast Ethernet ports, providing advanced features and best-in-class performance to enhance your network infrastructure. This model ensures seamless connectivity for multiple devices, making it an ideal choice for environments requiring reliable network communication.

One of the standout features of the SLM2008PTNA is its Layer 2 switching capabilities. This switch supports auto-negotiation, which allows each port to automatically detect the speed of the connected device and adjust accordingly. This ensures optimal performance and smooth operation across various connected devices. Additionally, the switch supports a non-blocking architecture, ensuring that bandwidth is not shared, which significantly enhances data transmission speed.

Power over Ethernet (PoE) is another key technology incorporated into the Cisco SLM2008PTNA. It simplifies the installation of network devices such as VoIP phones, security cameras, and wireless access points by supplying power through the Ethernet cable. This eliminates the need for separate power sources, reducing installation costs and increasing flexibility in device placement.

Moreover, the SLM2008PTNA comes equipped with advanced security features, such as port security and VLAN support. Port security allows network administrators to restrict access to the network based on MAC addresses, preventing unauthorized access and enhancing network security. The support for Virtual Local Area Networks (VLANs) enables the segmentation of the network into different logical networks, improving traffic management and security within each segment.

The switch is designed for easy management and monitoring, featuring a user-friendly web interface that simplifies configuration. This allows network administrators to quickly set up and manage the device without requiring extensive technical knowledge. Additionally, its compact design makes it suitable for desktop or rack-mount installation, maximizing space efficiency in network environments.

In conclusion, the Cisco Systems SLM2008PTNA is an essential component for small to medium-sized businesses looking to enhance their network performance. With its Layer 2 switching capabilities, Power over Ethernet support, advanced security features, and ease of management, this switch provides a well-rounded solution for modern networking needs, delivering reliable performance and scalability for growth.
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