Security

10

 

Storm Control

 

 

 

 

 

Storm Control

A traffic storm is the result of an excessive number of broadcast, multicast, or unknown unicast messages simultaneously transmitted across a network by a port. Forwarded message responses might create a loop and overload network resources and cause the network to time-out.

The switch measures the incoming broadcast, multicast, or unknown unicast packet rate per port and discards packets when a rate exceeds a defined value. Storm control can be enabled or disabled on each interface.

Storm control is disabled by default on all ports for all packet types. Use the Storm Control page to enable and configure storm control on the switch ports.

To display and configure storm control settings for a port:

STEP 1 Click Security > Storm Control in the navigation window.

STEP 2 Select the port to configure and click Edit.

STEP 3 For broadcast, multicast, and unicast traffic, specify the following storm control parameters for the selected port:

Mode—Select Enable to turn on storm control protection for the traffic type.

Rate Threshold Type—Select the measurement the switch uses to determine whether traffic exceeds the threshold:

-Percent—Traffic is dropped when it exceeds a percentage of the total capability of the link.

-pps (packets per second—Traffic is dropped when it exceeds the set number of packet-per-second on the link for this type of traffic.

Rate Threshold—Specify the maximum rate at which this type of packet is forwarded. If the Rate Threshold Type is Percent, enter a percentage of the total port capability (0–100 percent). If the Rate Threshold Type is pps, enter a packet per second rate (0–14880000). Ports that operate at 10 Mbps, 100 Mbps, or 1000 Mbps have a maximum throughput of 14880, pps 148800 pps, or 1488000 pps correspondingly.

Cisco Small Business SG200 Series 8-port Smart Switch

154

Page 154
Image 154
Cisco Systems SLM2008PTNA manual Storm Control

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.