Linksys SLM224G4S Manuel d'utilisateur télécharger pdf (Page 37)

Chapter 5

Configuration Using the Web-based Utility

24/48-Port 10/100 + 4-Port Gigabit Resilient Clustering Smart Switch with 2 Combo SFPs

Security > Storm Control

The Storm Control screen is used to configure broadcast

and multicast storm control.

Security > Storm Control

Storm Control enables limiting the amount of Multicast and

Broadcast frames accepted and forwarded by the Switch.

A Broadcast Storm results when an excessive amount of

broadcast messages is simultaneously transmitted across

a network by a single port. Forwarded message responses

are heaped onto the network, straining network resources

or causing the network to time out.

To enable Storm Control on a port, you specify the packet

type (broadcast/multicast) and maximum transmission

rate. The system measures the incoming Broadcast and

Multicast frame rates separately on each port and discards

frames when the rate exceeds the specified maximum.

Interface Select the unit number and port from which

storm control is enabled.

Broadcast Control Select the checkbox to apply

Broadcast control on the selected interface. Broadcast

control limits the amount of Broadcast packet types to be

forwarded. The default is not selected (disabled).

Mode Specifies the Broadcast mode currently enabled

on the device. The possible values are:

Multicast & Broadcast Counts Broadcast and

Multicast traffic together.

Broadcast Only Counts only Broadcast traffic.

Rate Threshold The maximum rate (packets per second)

at which unknown packets are forwarded. The ranges are

70 kbps to 100 Mbps for FE ports, and 3.5 to 100 Mbps

for GE ports. The default value is 3500 kbps.

The Update button adds the Storm Control settings to the

Storm Control table at the bottom of the screen.

•

Security > RADIUS

The RADIUS screen is used to configure a Remote

Authorization Dial-In User Service (RADIUS) server for user

authentication.

Security > RADIUS

RADIUS servers provide additional security for networks

by providing a centralized authentication method for web

access. Up to eight RADIUS servers can be configured. The

Switch attempts authentication using the listed sequence

of servers. The process ends when a server either approves

or denies access to a user.

IP Address Enter the IP address of the authentication

server.

Priority The server priority. The possible values are 0

to 65535, where 0 is the highest priority. This priority

determines the order in which RADIUS servers are queried

when more than one RADIUS server is configured. The

default priority is 0.

Authentication Port Enter the authentication port. The

authentication port is used to verify the RADIUS server

authentication. The default value is 1812.

Number of Retries Defines the number of transmitted

requests sent to RADIUS server before a failure occurs. The

possible values are 1 to 10. The default is 3.

Timeout for Reply Defines the amount of the time in

seconds the device waits for an answer from the RADIUS

server before retrying the query, or switching to the next

server. The possible values are 1 to 30. The default is 3.

Dead Time Defines the amount of time (minutes) that a

RADIUS server is bypassed for service requests. The range

is 0 to 2000. The default is 0 minutes.

Key String Defines the default key string used to

authenticate and encrypt all RADIUS communications

between the device and the RADIUS server. This key must

match the RADIUS encryption.

Source IP Address Defines the source IP address that is

used for communication with RADIUS servers.

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Linksys SLM224G4S Manuel d'utilisateur Page 37

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