A Virtual Local Area Network (VLAN) may be a logical grouping
of network users and resources connected to administratively outlined ports
on a switch. By making VLANs, you’re able to produce smaller broadcast
domains among a switch by distribution completely different|completely different} ports within the switch to different
subnetworks. A VLAN is treated like its own subnet or broadcast
domain. this suggests that frames broadcasted onto a network ar solely
switched between ports within the same VLAN.
Using virtual LANs, you’re now not confined to making workgroups by
physical locations. VLANs is organized by location, function, department,
or even the appliance or protocol used, despite wherever the
resources or users ar settled.
In this chapter, you’ll learn what a VLAN is and the way VLAN memberships
are utilized in a switched internetwork. Also, I’ll discuss however Virtual
Trunk Protocol (VTP) is employed to update switch databases with VLAN info.
Trunking FastEthernet links also will be mentioned. Trunking permits
you to send info concerning all VLANs across one link.
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