Mac-Based Vlan Configuration; Introduction To Mac-Based Vlan - H3C SR8800 Configuration Manual

Tagged
GigabitEthernet3/1/3
Untagged Ports:
GigabitEthernet3/1/1
[DeviceA-GigabitEthernet3/1/3] display vlan 200
VLAN ID: 200
VLAN Type: static
Route Interface: not configured
Description: VLAN 0200
Name: VLAN 0200
Broadcast MAX-ratio: 100%
Tagged
GigabitEthernet3/1/3
Untagged Ports:
GigabitEthernet3/1/2

MAC-based VLAN configuration

Introduction to MAC-based VLAN

The MAC-based VLAN feature assigns hosts to a VLAN based on their MAC addresses. This feature is
mostly used in conjunction with security technologies such as 802.1X to provide secure, flexible network
access for terminal devices.
Static MAC-based VLAN assignment
Static MAC-based VLAN assignment applies to networks containing a small number of VLAN users. In
such a network, you can create a MAC address-to-VLAN map containing multiple MAC
address-to-VLAN entries on a port, enable MAC-based VLAN on the port, and assign the port to
MAC-based VLANs.
With static MAC-based VLAN assignment configured on a port, the device processes received frames by
using the following guidelines:
When the port receives an untagged frame, the device looks up the MAC address-to-VLAN map
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based on the source MAC address of the frame for a match. The device first performs a fuzzy match.
In the fuzzy match, the device searches the MAC address-to-VLAN entries whose masks are not
all-Fs and performs a logical AND operation on the source MAC address and each mask. If the
result of an AND operation matches the corresponding MAC address, the device tags the frame
with the corresponding VLAN ID. If the fuzzy match fails, the device performs an exact match. In the
exact match, the device searches the MAC address-to-VLAN entries whose masks are all-Fs. If the
MAC address of a MAC address-to-VLAN entry matches the source MAC address of the untagged
frame, the device tags the frame with the corresponding VLAN ID. If no match is found, the device
assigns a VLAN to the frame by using other criteria, such as IP address. If no match is found, the
device tags the frame with the PVID of the receiving port and forwards the frame.
When the port receives a tagged frame, the port forwards the frame if the VLAN ID of the frame is
•
permitted by the port, or otherwise drops the frame.
Dynamic MAC-based VLAN
You can use dynamic MAC-based VLAN with access authentication (such as 802.1X authentication
based on MAC addresses) to implement secure, flexible terminal access. After configuring dynamic
Ports:
Ports:
13