Vlan (Virtual Local Area Network) Foundation:- Switch Vlan
Ø Trunk
Port :- That Carry All Vlan Traffic Between Your Switches
ü Segments
Broadcast Domain
ü Subnet
Correlation
ü Access
Control
ü Quality
Of Service
v The
Normal Switches World:-
Ø 1 Collision
Domain Per Port
Ø Broadcast
Sent To All Ports
Ø One
Subnet Per Lan
Ø Very
Limited Access Control
The
Flexibility Of Vlans:-
Ø No
Longer Limited To Physical Location
Ø Tighter
Control Of Broadcast
Understanding
Trunks and VTP
-
- What is Trunking
Ø Trunking(also known as Tagging) passes multi-Vlan information b/w switchesØ Places Vlan information into each frameØ Layer 2 featureØ Trunking is a Cisco term.- Trunking Language : 802.1Q
Ø Switches pass the information b/w each other using official languages 802.1Q that is industry standard
- Native Vlan:- is designed for packet that received on the trunk that are not tag
- Double Edge word: VTP
- VLAN Trunking Protocol (VTP):-It Replicate the Vlans into Multiple Switches through Trunk Ports
Ø Server(Default)
ü Power to change vlan information
ü Sends and receive vtp updates
ü Saves vlan configuration
Ø Client
ü Cannot change vlan information
ü Sends and receive vtp updates
ü Does not save vlan configuration
Ø Transparent
ü Power to change vlan information
ü Forward (pass through) vtp
updates
ü Does not listen to vtp
advertisements
ü Saves Vlan configuration
Ø Off (configurable
only in CatOS switches):- in the VTP off mode, switches behave the same as in
VTP transparent mode with the exception that VTP advertisements are not
forwarded.
Vlan Pruning
Ø Keeps unnecessary broadcast
traffic from crossing trunk link.
Ø Only work on VTP Server
Please upload PDF of VLAN Introduction
ReplyDeleteDear Kindly refer to CCNP Switch option then Vlan and Trunking
Deletehttp://www.ccnaccnplinux.com/2016/12/vlan-theory.html
Great Article
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