Alloy AS5010-P, Руководство пользователя

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AS Series User Manual
192
Doc No.: AS5-0116-01
VLAN’s
The virtual LAN (VLAN) allows you to group physically separate users into the same broadcast
domain. The use of VLANs improves security, segmentation, and flexibility. The use of VLANs also
decreases the cost of arranging users, because no extra cabling is required.
VLANs allow an administrator to define user groups logically rather than by their physical locations.
For example, you can arrange user groups such as accounting, engineering, and finance rather than
grouping everyone on the first floor, everyone on the second floor, and so on.
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VLANs define broadcast domains that can span multiple LAN segments.
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VLAN segmentation is not bound by the physical location of users.
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Each switch port can be assigned to only one VLAN.
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Ports not assigned to the same VLAN do not share broadcasts, improving network
performance.
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A VLAN can exist on one switch or on multiple switches.
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VLANs can connect across wide-area networks (WANs). The figure shows a VLAN design.
VLANs are defined by user functions rather than locations.
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Each VLAN on a switch behaves as if it were a separate physical bridge. The switch forwards
packets (including unicasts, multicasts, and broadcasts) only to ports assigned to the same
VLAN from which it originated. This reduces on network traffic. VLANs require a trunk to
span multiple switches. Each trunk can carry traffic for multiple VLANs
Information
This section of the switch allows for the configuration of VLANs on the switch. This page is divided
into a global section at the top of the page and a per port configuration section.
1. Select Configuration > VLANs.
2. Enter the Allowed Access VLANs into this field. By default only VLAN 1 exists. However if
you wish to create additional Access VLANs enter these here.
3. Enter the value for Ethertype for Custom S-ports. This field should only be changed if
you are using Custom S-ports.
4. For Port VLAN Configuration this is where you configure each of the ports on the switch
to the VLAN specifications you prefer. To configure specific options for individual ports
either select from the drop down menu for options such as Port VLAN, Port Type Ingress
Acceptance and Egress Tagging. For Port VLAN, Allowed VLAN’s and Forbidden VLANs
you need to enter in the number manually. For example for the Allowed VLAN, to
specify a range you need to enter in in a dash such as 1-4095 This will allocate VLAN 1