Xembedded XPMC-9100, Руководство пользователя

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XCPC-9100 Xembedded, Inc.
Why Use VLANs?
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Security—Separation of systems with sensitive data from the rest of the network
provides security. This system separation decreases the chance that someone can gain
access to information that the person does not have authorization to see.
•
Projects/special applications—simplify the management of a project or work group using
a special application with VLAN. VLAN brings all the necessary nodes together allowing
shared network resources and project management. C
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Performance/bandwidth—The network administrator can create VLANs that reduce the
number of router hops. The VLANs can also increase the effective network bandwidth
for users.
•
Broadcasts/traffic flow—Since VLANs do not pass broadcast traffic to nodes that are not
part of the VLAN, a VLAN automatically reduces broadcasts.
•
Departments/specific job types—Set up VLANs for departments that are heavy network
users, such as multimedia or engineering departments. VLANs can be setup across
department lines with dedicated VLANs to specific types of employees, such as
managers or salespeople.
You can create up to 4 VLANs with the Xembedded XCPC-9100 on-board Level-2 managed
switch using the procedure shown below.
While you can have more than one VLAN on the XCPC-9100 switch, each VLANs cannot
communicate directly with each other. This would defeat the purpose of a VLAN, which is to
isolate a part of the network. Communication between VLANs requires the use of a router.
Procedure for VLAN set-up.
The following equipment is required and used to complete this procedure:
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A XCPC-9100 3 pin to DB-9 serial cable. This cable connects RS-232, data leads only
from PC work Station to P3 on the XCPC-9100.
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A XCPC-9100 configured for PMC site Ethernet to the on-board switch (XCPC-
9100 switches 1-8 with ODD numbered switches on and all others off).
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