Planet GS-4210-8P2S User Manual download pdf (Page 264)

User’s Manual of GS-4210 Series

4.9.10 Port Security

This page allows you to configure the Port Security Limit Control system and port settings. Limit Control allows for limiting the

number of users on a given port. A user is identified by a MAC address and VLAN ID. If Limit Control is enabled on a port, the

limit specifies the maximum number of users on the port. If this number is exceeded, an action is taken. The action can be one

of four different as described below.

The Limit Control module is one of the modules that utilize a lower-layer module while the Port Security module manages MAC

addresses learned on the port.

The Limit Control configuration consists of two sections, a system- and a port-wid. The IP Source Guard Static Binding Entry

and Table Status screens in Figure 4-9-64 & Figure 4-9-65 appear.

Figure 4-9-64 Port Security Setting Page Screenshot

The page includes the following fields:

Object Description

 Port

Select port for this drop down list

 Security

Enable or disable the port security

 Mac L2 Entry

The maximum number of MAC addresses that can be secured on this port. If the

limit is exceeded, the corresponding action is taken.

The switch is "born" with a total number of MAC addresses from which all ports

draw whenever a new MAC address is seen on a Port Security-enabled port.

Since all ports draw from the same pool, it may happen that a configured

maximum cannot be granted, if the remaining ports have already used all

available MAC addresses.

 Action

If Limit is reached, the switch can take one of the following actions:

 Forward: Do not allow more than Limit MAC addresses on the port, but take

no further action.

 Shutdown: If Limit + 1 MAC addresses is seen on the port, shut down the

port. This implies that all secured MAC addresses will be removed from the

port, and no new will be learned. Even if the link is physically disconnected

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Planet GS-4210-8P2S User Manual Page 264