user manual

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Cisco Aironet 1200 Series Access Point Software Configuration Guide
OL-2159-05
Chapter 6 Configuring Proxy Mobile IP
Configuring Proxy Mobile IP
• Access points configured as authoritative access points must be enabled for proxy Mobile IP before
regular access points.
• All proxy Mobile IP enabled access points in the network must be configured to use the same
authoritative access points. For example, one access point cannot be configured with two
authoritative access points and another access point be configured with three different authoritative
access points.
Optionally, you can implement an AAA server to authenticate mobile clients in addition to home and
foreign agents.
Configuring Proxy Mobile IP on Your Wired LAN
Proxy mobile IP on access points works in conjunction with Mobile IP configured on your network
routers. For instructions on configuring Mobile IP on a router on your network, refer to the Mobile IP
chapter in 12.2 T New Features (Early Deployment Releases). Click this link to browse to the Mobile IP
chapter:
http://www.cisco.com/univercd/cc/td/doc/product/software/ios120/120newft/120t/120t1/mobileip.htm
In addition, make sure you have accomplished the following actions:
• Loaded the latest firmware onto all access points in your wireless network.
• Established an HTTP connection to the access point.
• Verified that client devices are associated to the local access point.
• Verified receipt of an appropriate DHCP address for the local LAN segment.
• Confirmed IP connectivity between all devices (ping or HTTP).
At least one access point on the wireless side of a home and foreign network must be a home or foreign
agent access point. Both access points must be configured to enable valid mobile nodes to associate with
them.
There are no standard procedures that describe how to configure these agent access points. Configuration
parameters, such as SSIDs, valid proxy Mobile IP addresses, SPI keys and group keys, and security
settings must be carefully considered and coordinated with wired side router settings before any degree
of success can be expected. The basic settings are the same for both access points. The only difference
is where the access point is located. A home agent access point is on the wireless side of the mobile
node’s home network. A foreign agent access point is on the wireless side of the network in which the
mobile node is authorized to enter in order to communicate back to its home network.
These instructions provide a general overview of the steps involved to configure the wireless network
components to operate in a Mobile IP environment. It must be stressed that the majority of configuration
effort is devoted to components on the wired network.
Figure 6-11 shows the configuration described in the following sections.