DSPPA DSP9323, Руководство пользователя

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SIP Intercom System
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The equipment supports 802.1Q/P protocol and DiffServ configuration. VLAN function can support
the different VLAN ID mode of processing in the WAN port and LAN port.
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Chart 1 shows a network switch with no VLAN. Any broadcast frames will be transmitted to all other
ports. For example, frames broadcast from Port 1 will be sent to Ports 2, 3, and 4.
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Chart 2 shows an example with two VLANs indicated by red and blue. In this example, frames
broadcast from Port 1 will only go to Port 2 since Ports 3 and 4 are in a different VLAN. VLANs can
be used to divide a network by restricting the transmission of broadcast frames.
Note: In practice, VLANs are distinguished by the use of VLAN IDs.