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[network planning] Chapter 3 data link layer (4) LAN, Ethernet, WLAN, VLAN
2022-07-06 20:03:00 【Deer Madoka】
Catalog
3.6-1 Basic concept and architecture of LAN
Two 、 Basic concept and architecture of LAN
3、 ... and 、 LAN transmission media
Four 、 LAN medium control method
5、 ... and 、 LAN classification
7、 ... and 、MAC Sublayer LLC Sublayer
Two 、 Ethernet provides no connection 、 Unreliable service
3、 ... and 、 The development of Ethernet transmission media and topology
5、 ... and 、 Adapter and MAC Address
6、 ... and 、 Ethernet MAC frame
7、 ... and 、 High speed Ethernet
Two 、802.11 Of MAC Frame header format
3、 ... and 、 WLAN classification
(1) WLAN with fixed infrastructure
(2) Self organizing network with fixed infrastructure wireless LAN
3.6-4 VLAN Basic concepts and principles
One 、 Limitations of traditional LAN
(1) Interface based VLAN technology ( Commonly used )
(2) be based on MAC Of VLAN technology
Four 、VLAN Realization ——IEEE 802.1Q frame
3.6-1 Basic concept and architecture of LAN
One 、 LAN
Two 、 Basic concept and architecture of LAN
Bus topology is optimal , Most widely used .
3、 ... and 、 LAN transmission media
Four 、 LAN medium control method
5、 ... and 、 LAN classification
6、 ... and 、IEEE 802 standard
7、 ... and 、MAC Sublayer LLC Sublayer
summary :
3.6-2 Ethernet
One 、 Ethernet Overview
baseband signal ( Corresponding to digital signal ): Send the digital signal 0 and 1 Directly expressed by two different voltages , Then send it to the number channel Up transfer , This transmission is called baseband transmission , Usually used in local area networks .
Two 、 Ethernet provides no connection 、 Unreliable service
3、 ... and 、 The development of Ethernet transmission media and topology
Four 、10BASE-T Ethernet
5、 ... and 、 Adapter and MAC Address
6、 ... and 、 Ethernet MAC frame
7、 ... and 、 High speed Ethernet
summary :
3.6-3 WLAN
One 、IEEE 802.11
Two 、802.11 Of MAC Frame header format
IBSS That is, the mobile stations in a service set do not communicate directly through the base station
To AP It is the communication between the mobile station in the service set and the base station
WDS It is the communication between two mobile stations in different service sets ( roaming )
From AP It is the communication between the base station and the mobile station in the service set
3、 ... and 、 WLAN classification
(1) WLAN with fixed infrastructure
(2) Self organizing network with fixed infrastructure wireless LAN
3.6-4 VLAN Basic concepts and principles
One 、 Limitations of traditional LAN
Two 、VLAN Basic concepts
3、 ... and 、VLAN Realization
(1) Interface based VLAN technology ( Commonly used )
(2) be based on MAC Of VLAN technology
Transmission between different switches trunk port . The same VLAN Send information to the host under , If it is not under the same switch, label it .
Four 、VLAN Realization ——IEEE 802.1Q frame
5、 ... and 、 practice
Q1 Sure ,Q2 Can not be .
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