Cisco Systems SG30052PK9NA Manual De Usuario

14

Cisco Small Business 300 Series Managed Switch Administration Guide 

232

 

This section describe how to add MAC addresses to the system. It covers the 
following topics:

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There are two types of MAC addresses—static and dynamic. Depending on their 
type, MAC addresses are either stored in the Static Address table or in the 
Dynamic Address table, along with VLAN and port information. 

Static addresses are configured by the user, and therefore, they do not expire. 

A new source MAC address that appears in a frame arriving at the device is added 
to the Dynamic Address table. This MAC address is retained for a configurable 
period of time. If another frame with the same source MAC address does not 
arrive at the device before that time period expires, the MAC entry is aged 
(deleted) from the table.

When a frame arrives at the device, the device searches for a corresponding/
matching destination MAC address entry in the static or dynamic table. If a match 
is found, the frame is marked for egress on a the port specified in the table. If 
frames are sent to a MAC address that is not found in the tables, they are 
transmitted/broadcasted to all the ports on the relevant VLAN. Such frames are 
referred to as unknown Unicast frames.

The device supports a maximum of 8K static and dynamic MAC addresses.