MSM7xx Controllers Configuration Guide v6.4.0

4. Under Server, define the following:
• Primary DHCP server address: Specify the IP address of the first DHCP server to which
the controller should forward DHCP requests.
• Secondary DHCP server address: Specify the IP address of the backup DHCP server to
which the controller should forward DHCP requests.
• Extend VSC egress subnet to VSC ingress subnet: Enable this option to have the controller
alter the DHCP address requests from client stations so that they appear to originate from
the network assigned to the VSC egress. This will cause the DHCP server to assign IP
addresses on this network to all client stations. The controller handles all mapping between
the two subnets internally.
For L2 connected APs operating in controlled mode:
◦ Enable the Client data tunnel option under Settings. (If teaming is active, the client
data tunnel is automatically used.)
◦ Enable the Always tunnel client traffic option on the VSC profile page under Virtual
AP > Client data tunnel.
Important: Always enable this option when any VSC (other than the default VSC) is
configured to use the Forward to egress interface option under DHCP relay agent. When
controller teaming is active, do not set values for Circuit ID and Remote ID.
5. Select Save.
Configuring GRE tunnels
To view and configure GRE tunnel definitions, select Controller >> Network > GRE tunnels. Initially,
no GRE tunnels are defined.
To add a tunnel, select Add New GRE Tunnel. The Add/Edit GRE tunnel page opens.
Define tunnel settings as follows:
Name
Tunnel name.
50 Network configuration