Cisco Cisco Aironet 350 Access Points

A Cisco Aironet Access Point is a wireless LAN transceiver that can act as the connection point between 
wireless and wired networks or as the center point of a standalone wireless network. Cisco Aironet 
Bridges are wireless LAN transceivers that connect two or more remote networks into a single LAN. 

The access point and bridge use a browser-based management system. The system settings are on web 
pages in the system firmware. You use your Internet browser to view and adjust the system settings. 

Firmware version 12.01T includes the following new software feature:

Proxy Mobile IP feature works in conjunction with the Mobile IP feature on Cisco devices on the wired 
network. When you enable proxy Mobile IP on your access point and on your wired network, the access 
point helps client devices from other networks remain connected to their home networks. The visiting 
client devices do not need special software; the access point provides proxy Mobile IP services on their 
behalf. Any wireless client can participate.

Mobile IP provides users the freedom to roam beyond their home subnets while maintaining their home 
IP addresses. This enables transparent routing of IP datagrams to mobile users during their movement, 
so that data sessions can be initiated to them while they roam. For example, a client device with an IP 
address of 192.95.5.2 could associate to an access point on a network whose IP addresses are in the 
209.165.200.x range. The guest client device keeps its 192.95.5.2 IP address, and the access point 
forwards its packets through a Mobile IP enabled router across the Internet to a router on the client’s 
home network. 

Access points with proxy Mobile IP enabled attempt to provide proxy service for any client device that 
associates and does not perform the following:

Issue a DHCP request to get a new IP address.

Support a Mobile IP stack. If a device supports a Mobile IP stack, the access point assumes that the 
device will perform its own Mobile IP functions. 

You enable proxy Mobile IP for specific SSIDs on the access point, providing support only for clients 
who use those SSIDs. Proxy mobile IP does not support VLANs.

Proxy mobile IP is disabled by default.

Guest client devices do not receive broadcast and multicast packets.

Five devices participate in proxy Mobile IP:

A visiting client device. The visiting client device is any device such as a personal digital assistant 
or a laptop that can associate to a wireless access point. It does not need any special proxy Mobile 
IP software.