MAC Address Tables

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Configuring the Aging Time for Dynamic Addresses

 

 

 

 

 

Configuring the Aging Time for Dynamic Addresses

The Dynamic Address Settings page enables you to set an aging time, after which the system removes addresses in the dynamic MAC address table that have not been refreshed. The aging period applies to dynamically learned addresses and to static addresses that are configured to Delete on Timeout. The default aging time is 300 seconds.

To configure the aging time:

STEP 1 Click MAC Address Tables > Dynamic Address Settings in the navigation window.

STEP 2 Specify an aging time from 10 to 1,000,000 seconds.

STEP 3 Click Apply. Your changes are saved to the Running Configuration.

Dynamic MAC Addresses

When the switch cannot find an entry in its bridging table that matches the VLAN and the destination MAC address of an incoming packet, the switch learns the MAC address, the VLAN, and the ingress port of the packet and adds an entry to the Dynamic Address table.

To prevent the bridging table from overflowing and to make room for new addresses, an address is deleted from the bridging table if no traffic is received from a dynamic MAC address for the configured aging period (see Configuring the Aging Time for Dynamic Addresses).

To display the Dynamic Addresses page, click MAC Address Tables >

Dynamic Addresses in the navigation window.

NOTE This page might take up to 45 seconds to display when the Dynamic Address Table contains the maximum number of entries.

By default, the Dynamic Address Table displays all dynamically learned MAC addresses. You can enter filter criteria and click Go to filter the display. Use the VLAN ID filter to display table entries for a particular VLAN. Use the MAC Address filter to display entries for a particular MAC address. Use the Interface filter to display entries for a particular port or LAG. Click Clear Filter to display all of the entries.

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Cisco Systems SLM2008PTNA manual Configuring the Aging Time for Dynamic Addresses, Dynamic MAC Addresses

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.