MSM7xx Controllers Configuration Guide v6.4.0
15 Mobility traffic manager
Key concepts
NOTE: This chapter discusses how to use and configure Mobility traffic manager (MTM) with
non-teamed controllers. If you are working with a controller team, most of the same information
applies. Essentially, a controller team is treated the same way as a single non-teamed controller.
For more information, see “Mobility support” (page 273).
MTM provides for seamless roaming of wireless users, while at the same time giving you complete
control over how wireless user traffic is distributed onto the wired networking infrastructure. MTM
enables you to implement a wireless networking solution using both centralized and distributed
strategies, allowing you to create a wireless network that is perfectly tailored to meet the needs of
your users and the requirements of your network. Some of the deployment strategies that you can
use with MTM include:
• Centralized wireless traffic: All traffic from wireless users is tunneled back to a central controller
where it is egressed onto the wired infrastructure. Wireless users can be connected to any AP
within the layer 3 network serviced by MTM.
The following diagram shows a deployment, where all wireless traffic is egressed onto a
specific network segment: 192.168.30.0. (On an MSM720, replace LAN port with Access
network and Internet port with Internet network in the following diagram.)
W
L
A
N
LAN port
192.168.1.1
Internet port
192.168.30.1
W
L
A
N
2
1
User B
User A
Network 2
192.168.20.0
Network 1
192.168.10.0
Network 3
192.168.30.0
User B
User A
MTM can also be used to send traffic to different networks or VLANs based on criteria such
as username, network location, VSC, or AP group.
• Traffic distribution using home networks: A home network can be assigned to each wireless
user (via RADIUS, local user accounts, or through a VSC egress). MTM can then be used to
tunnel the users traffic to their home network, regardless of the AP to which a user connects
within the mobility domain.
The following diagram shows a deployment where the wireless traffic for each user is egressed
onto a specific network segment by assigning a home network to each user. (On an MSM720,
replace LAN port with Access network and Internet port with Internet network in the following
diagram.)
Key concepts 285