Black Box LPB5028A, Руководство пользователя

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Chapter 5: Configuration
Parameter description:
• Port Members: A check box is provided for each port of a private VLAN. When checked, port isolation is enabled on that port.
When unchecked, port isolation is disabled on that port. By default, port isolation is disabled on all ports.
• Buttons:
Apply: Click to save changes.
Reset: Click to undo any changes made locally and revert to previously saved values.
5.11.6 MAC-based VLAN
MAC address-based VLAN decides the VLAN for forwarding an untagged frame based on thesource MAC address of the frame.
A most common way of grouping VLAN members is by port, hence the name port-based VLAN. Typically, the device adds the
same VLAN tag to untagged packets that are received through the same port. Later on, these packets can be forwarded in the
same VLAN. Port based VLAN is easy to configure, and applies to networks where the locations of terminal devices are relatively
fixed. As mobile office and wireless network access gain more popularity, the ports that terminal devices use to access the
networks are very often non-fixed. A device may access a network through Port A this time, but through Port B the next time.
If Port A and Port B belong to different VLANs, the device will be assigned to a different VLAN the next time it accesses the
network. As a result, it will not be able to use the resources in the old VLAN. On the other hand, if Port A and Port B belong to
the same VLAN, after terminal devices access the network through Port B, they will have access to the same resources as those
accessing the network through Port A do, which brings security issues. To provide user access and ensure data security in the
mean time, the MAC-based VLAN technology is developed.
MAC-based VLANs group VLAN members by MAC address. With a MAC-based VLAN configured, the device adds a VLAN tag
to an untagged frame according to its source MAC address. MAC-based VLANs are mostly used in conjunction with security
technologies such as 802.1X to provide secure, flexible network access for terminal devices.
Configuration
The MAC-based VLAN entries can be configured here. This page allows you to add and delete MAC-based VLAN entries and
assign the entries to different ports. This page shows only static entries.
Web Interface
To configure MAC address-based VLAN configuration in the web interface:
1. Click MAC address-based VLAN configuration and add new entry.
2. Specify the MAC address and VLAN ID.
3. Click Apply.