GarrettCom Magnum MNS-6K - Manual (Page 104)

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9 – VLAN
Create separate network segments (collision domains) across Magnum 6K family of
switches…..
hort for virtual LAN (VLAN), a VLAN creates separate collision domains or network
segments that can span multiple Magnum 6K family of switches. A VLAN is a group of ports
designated by the switch as belonging to the same broadcast domain. The IEEE 802.1Q
specification establishes a standard method for inserting VLAN membership information into
Ethernet frames.
Why VLANs?
VLAN’s provide the capability of having two (or more) Ethernet
segments co-exist on common hardware. The reason for creating
multiple segments in Ethernet is to isolate collision domains.
VLANs can isolate groups of users, or divide up traffic for security, bandwidth
management, etc. VLANs are widely used today and are here to stay. VLANs need not be
in one physical location. They can be spread across geography or topology. VLAN
membership information can be propagated across multiple Magnum6K switches.
F IGURE 67 – VLAN as two separate collision domains. The top part of the figure shows two
“traditional” Ethernet segments. Up to 32 VLANs can be defined per switch.
Chapter 9
S
j
Segment 1 Segment 2
VLAN 1 VLAN 2
Segment 1 Segment 1 Segment 2 Segment 2
VLAN 1 VLAN 1 VLAN 2 VLAN 2