Black Box LGB1148A Manual Do Utilizador
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Chapter 3: Configuration
3.10.6 MAC-Based VLAN
MAC address-based VLAN decides the VLAN for forwarding an untagged frame based on the source 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
meantime, the MAC-based VLAN technology is developed.
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
meantime, the MAC-based VLAN technology is developed.
MAC-based VLANs group VLAN members by MAC address.
With MAC-based VLAN configured, the device adds a VLAN tag
to an untagged frames according to its source MAC address. MAC-based VLANs are mostly used with security technologies such
as 802.1X to provide secure, flexible network access for terminal devices.
to an untagged frames according to its source MAC address. MAC-based VLANs are mostly used with security technologies such
as 802.1X to provide secure, flexible network access for terminal devices.
Configuration
The MAC-based VLAN enties can be configured here. This page allows for adding and deleting MAC-based VLAN entries and
assigning the entries to different ports. This page shows only static entries.
assigning 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 Save.
Figure 3-58. The MAC-Based VLAN Membership Configuration screen.
LGB1108A