Simple description of switch and MAC address table

Osi

7

6

5

4

3-ip/route/icmp

2-mac, Bridge (bridge), switch

1-Network cable, repeater (repeater), Hub (hub)

-----------------------------------------------------------------------------

Exchange:

-Definition

The same network segment of the host interoperability, the process of interoperability, called exchange;

-Achieve

A device with a switching function, called a switch

-Core Table

exchange Table/mac Address Table

It contains the corresponding relationship between Mac and Port

-Principle

Complete Watch

1. Static Input MAC Address Table

2. Dynamic form of MAC Address table

Extracts the received data frame from the source Mac, forming a correspondence with the "in port" of the data frame and putting it into the MAC address table

Tabular

Extracts the received data frame from the target Mac and matches the MAC Address table entry

If the match succeeds, the data frame is sent from the corresponding port

If the match fails, the data frame is flooding

-flooding the meaning of the flood

In peacetime, it can also be called a broadcast

Send data frames from all ports except the port

Related commands for MAC Address table:

Display mac-address view MAC Address Table contents

Display mac-address aging-time Viewing dynamic entry survival time

Display mac-address Summray View brief information for the MAC address table

Display mac-address? To view the commands that display mac-address can use

-------------------------------------------------------------------------------------------------------

Full Duplex: The port can be both contracted and accepted

Half-duplex: ports can only accept individual packages or bundles

Cisco switch Commands:

Show Mac-address-table view MAC Address Table

Static configuration MAC Address Table entry: mac-address-table static MAC address VLAN VLAN number interface port

Defined:

-Conflict domains

The conflict range of electrical signals

In order to resolve the signal conflict

Introducing the CSMA/CD mechanism

Carrier-listening multi-access mechanism with collision detection

Split conflict Fields

Introducing 2-tier devices: bridges and switches

-Broadcast Domain

A network segment, which is a broadcast domain

Attention:

1-tier device, unable to isolate conflict domains

2-tier devices that can isolate conflict domains, but cannot isolate broadcast domains

Simple description of switch and MAC address table