Brocade Communications Systems Mobility 7131 Series Service Manual Page 133

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Brocade Mobility 7131 Access Point Product Reference Guide 121
53-1002517-01
5
A tagged VLAN uses an extra tag in the MAC header to identify a frame’s VLAN
membership. This tag helps define the VLAN and QoS priority. A tagged frame is four bytes
longer than an untagged frame and contains two bytes of Tag Protocol Identifier (TPID)
information within the type and length field of an Ethernet frame and two bytes of Tag
Control Information (TCI) after the Ethernet frame’s source address field.
When Tagged is selected from the drop-down menu, the access point forwards all tagged
frames in the native VLAN and admits only tagged frames on trunks. When Tagged is
selected the access point drops any untagged traffic, including untagged traffic in the
native VLAN. Untagged is selected by default.
11. Use the LAN drop-down menu to map one of the two LANs to the WLAN listed to the left. With
this assignment, the WLAN uses this assigned LAN interface.
12. Select the Dynamic checkboxes (under the Mode column) to configure the VLAN mapping as a
dynamic VLAN.
Using Dynamic VLAN assignments, a VMPS (VLAN Management Policy Server) dynamically
assigns VLAN ports. The Mobility 7131 Access Point uses a separate server as a VMPS
server. When a frame arrives on the Mobility 7131 Access Point, it queries the VMPS for
the VLAN assignment based on the source MAC address of the arriving frame.
If statically mapping VLANs, leave the Dynamic checkbox specific to the target WLAN and
its intended VLAN unselected. The administrator is then required to configure VLAN
memberships manually.
The Dynamic checkbox is enabled only when a WLAN is having EAP configured. Otherwise,
the checkbox is disabled.
13. Use the VLAN drop-down menu to select the name of the target VLAN to map to the WLAN
listed on the left-hand side of the screen.
Brocade Mobility recommends mapping VLANs strategically in order to keep VLANs tied to
the discipline they most closely match. For example, If WLAN1 is comprised of MUs
supporting the sales area, then WLAN1 should be mapped to sales if a sales VLAN has
been already been created.
14. Click Apply to return to the VLAN Name screen. Click OK to return to the LAN screen. Once at
the LAN screen, click Apply to re-apply your changes.
Configuring LAN1 and LAN2 Settings
Both LAN1 and LAN2 have separate sub-screens to configure the DHCP settings used by the LAN1
and LAN2 interfaces. Within each LAN screen is a button to access a sub-screen to configure
advanced DHCP settings for that LAN. For more information, see Configuring Advanced DHCP
Server Settings on page 5-124. Additionally, LAN1 and LAN2 each have separate Type Filter
submenu items used to prevent specific (an potentially unneccesary) frames from being
processed, for more information, see Setting the Type Filter Configuration on page 5-125.
To configure unique settings for either LAN1 or LAN2:
1. Select Network Configuration -> LAN -> LAN1 (or LAN2) from the Mobility 7131 Access Point
menu tree.
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