Publication date: Sept, 2015
Revision A1
155
2-‐17 VCL
2-‐17.1 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 common way of grouping VLAN members is by port; this is called 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 was 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, flexible
network access for terminal devices.
Web Interface
To configure MAC address-‐based VLAN configuration in the web interface:
1. Click VLC, MAC-‐based VLAN configuration, and add new entry.
2. Specify the MAC address and VLAN ID.
3. Click Apply.
Figure 2-‐17.1: The MAC-‐based VLAN Membership Configuration
Parameter description:
Delete:
To delete a MAC-‐based VLAN entry, check this box and press save. The entry will be deleted on the
selected switch in the stack.
MAC Address:
Indicates the MAC address.
VLAN ID:
Содержание LPB2910A
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