Brocade Mobility RFS Controller System Reference Guide (Supporting software release 5.5.0.0 and later) - Manual (Page 452)

440 Brocade Mobility RFS Controller System Reference Guide
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22. Select the + Add Row button to set the following:
23. Select OK to save the changes to the session configuration. Select Reset to revert to the last
saved configuration.
GRE Configuration
Profile Network Configuration
GRE tunneling can be configured to bridge Ethernet packets between WLANs and a remote WLAN
gateway over an IPv4 GRE tunnel. The tunneling of 802.3 packets using GRE is an alternative to
MiNT or L2TPv3. Related features like ACLs for extended VLANs are still available using layer 2
tunneling over GRE.
Using GRE, Access Points map one or more VLANs to a tunnel. The remote endpoint is a
user-configured WLAN gateway IP address, with an optional secondary IP address should
connectivity to the primary GRE peer be lost. VLAN traffic is expected in both directions in the GRE
tunnel. A WLAN mapped to these VLANs can be either open or secure. Secure WLANs require
authentication to a remote RADIUS server available within your deployment using standard RADIUS
protocols. Access Points can reach both the GRE peer as well as the RADIUS server using IPv4.
To define a GRE configuration:
1. Select Configuration > Profiles > Network.
2. Expand the Network menu to display its submenu options.
3. Select GRE.
The screen displays existing GRE configurations.
MTU Define the session maximum transmission unit (MTU) as the size (in bytes) of the largest
protocol data unit the layer can pass between tunnel peers in this session. A larger MTU
means processing fewer packets for the same amount of data.
Remote Session ID Use the spinner control to set the remote session ID passed in the establishment of the
tunnel session. Assign an ID in the range of 1 - 4,294,967,295.
Encapsulation Select either IP or UDP as the peer encapsulation protocol. The default setting is IP. UDP uses
a simple transmission model without implicit handshakes.
UDP Port If UDP encapsulation is selected, use the spinner control to define the UDP encapsulation
port. This is the port where the L2TP service is running.
Source Type Select a VLAN as the virtual interface source type.
Source Value Define the Source Value range (1 - 4,094) to include in the tunnel. Tunnel session data
includes VLAN tagged frames.
Native VLAN Select this option to define the native VLAN that will not be tagged.
Cookie Size Set the size of the cookie field within each L2TP data packet. Options include 0, 4 and 8. The
default setting is 0.
Value 1 Set the cookie value first word.
Value 2 Set the cookie value second word.
End Point Define whether the tunnel end point is local or remote.