Specifications

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Cisco IOS Software Configuration Guide for Cisco Aironet Access Points
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Chapter 15 Configuring Proxy Mobile IP
Configuring Proxy Mobile IP
Configuration Guidelines
Before configuring proxy Mobile IP, you should consider these guidelines:
• You can enable proxy Mobile IP only on root access points (units connected to the wired LAN). You
cannot enable proxy Mobile IP on repeater access points.
• Access points participating in proxy Mobile IP should be configured with gateway addresses. You
can configure the gateways manually, or the access points can receive gateways through DHCP.
• The foreign and home agents must reside on the network gateways where you want to support proxy
Mobile IP.
• If your authoritative access points receive their IP addresses through DHCP, use the access point
host names to specify the AAPs in the proxy Mobile IP configuration.
• Proxy Mobile IP does not support broadcast and multicast traffic for visiting clients.
• To use proxy Mobile IP with DHCP-enabled client devices, you must disable Media Sense on the
client devices. You can find instructions for disabling Media Sense in Microsoft Knowledge Base
Article Q239924. Click this URL to browse to this article:
http://support.microsoft.com/default.aspx?scid=KB;EN-US;Q239924&
• Proxy Mobile IP does not support VLANs.
• If you disable proxy Mobile IP on your access point, the entire proxy Mobile IP configuration is
cleared. To disable proxy Mobile IP without clearing the configuration, use the ip proxy-mobile
pause command.
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
Note To avoid problems with roaming client devices, you must configure two hidden global configuration
mode commands on your Mobile IP router: ip mobile bindupdate and ip mobile bindupdate ack.