Brocade Mobility 5181 Access Point Product Reference Guide (Supporting software release 4.4.0.0) - Manual (Page 110)

96 Brocade Mobility 5181 Access Point Product Reference Guide
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Configuring the LAN interface
5
database houses the records of MAC addresses and VLAN assignments. The VLAN database looks
up the MAC to determine what VLAN is assigned to it. If it is not in the database, it simply uses a
default VLAN assignment. The VLAN assignment is sent to the Mobility 5181 Access Point. The
Mobility 5181 Access Point then maps the target WLAN for the assigned VLAN and traffic passes
normally, allowing for the completion of the DHCP request and further traffic.
To create new VLANs or edit the properties of an existing VLAN:
1. Select Network Configuration -> LAN from the Mobility 5181 Access Point menu tree.
2. Ensure the Enable 802.1q Trunking button is selected from within the LAN Setting field.
Trunk links are required to pass VLAN information between destinations. A trunk port is by
default a member of all the VLANs existing on the Mobility 5181 Access Point and carry traffic
for all those VLANs. Trunking is a function that must be enabled on both sides of a link.
3. Select the VLAN Name button.
The VLAN name screen displays. The first time the screen is launched a default VLAN name of
1 and a default VLAN ID of 1 display. The VLAN name is auto-generated once the user assigns
a VLAN ID. However, the user has the option of re-assigning a name to the VLAN using New
VLAN and Edit VLAN screens.
To create a new VLAN, click the Add button, to edit the properties of an existing VLAN, click the
Edit button.
4. Assign a unique VLAN ID (from 1 to 4095) to each VLAN added or modified.
The VLAN ID associates a frame with a specific VLAN and provides the information the Mobility
5181 Access Point needs to process the frame across the network. Therefore, it may be
practical to assign a name to a VLAN representative or the area or type of network traffic it
represents.
A business may have offices in different locations and want to extend an internal LAN between
the locations. An Mobility 5181 Access Point managed infrastructure could provide this
connectivity, but it requires VLAN numbering be managed carefully to avoid conflicts between
two VLANs with the same ID.
5. Define a 32 ASCII character maximum VLAN Name.
Enter a unique name that identifies members of the VLAN. Brocade recommends selecting the
name carefully, as the VLAN name should signify a group of clients with a common set of
requirements independent of their physical location.
6. Click Apply to save the changes to the new or modified VLAN.
7. From the LAN Configuration screen, click the WLAN Mapping button. The Mapping
Configuration screen displays.
8. Enter a Management VLAN Tag for LAN1 and LAN2.
The Management VLAN uses a default tag value of 1. The Management VLAN is used to
distinguish VLAN traffic flows for the LAN. The trunk port marks the frames with special tags as
they pass between the Mobility 5181 Access Point and its destination, these tags help
distinguish data traffic.
Authentication servers (such as Radius and Kerberos) must be on the same Management
VLAN. Additionally, DHCP and BOOTP servers must be on the same Management VLAN as well.
9. Define a Native VLAN Tag for LAN1 and LAN2.