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3-11.6 MAC-Based
VLAN
3-11.6.1
Configuration
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. The causes
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 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 and flexible network access for
terminal devices.
The MAC-based VLAN entries 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.
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”.