Reference Guide

324 | ip mobile proxy Dell PowerConnect W-Series ArubaOS 6.1 CLI | Reference Guide
Usage Guidelines
The proxy mobile IP module in a mobility-enabled controller detects when a mobile client has moved to a foreign
network and determines the home agent for a roaming client. The proxy mobile IP module performs the
following functions:
 Derives the address of the home agent for a mobile client from the HAT using the mobile client’s IP address.
If there is more than one possible home agent for a mobile client in the HAT, the proxy mobile IP module
uses a discovery mechanism to find the current home agent for the client.
 Detects when a mobile client has moved. Client moves are detected based on ingress port and VLAN changes
and mobility is triggered accordingly. For faster roaming convergence between AP(s) on the same controller, it
is recommended that you keep the “on-association” option enabled. This helps trigger mobility as soon as
802.11 association packets are received from the mobile client.
Example
The following command enables re-home for voice clients:
(host) (config) #ip mobile proxy re-home
Command History
This command was available in ArubaOS 3.0.
re-home Allows on-hook phones to be assigned a new home agent. This is to
load balance voice client home agents across controllers in a mobility
domain.
This parameter requires that you install the PEFNG license in the
controller.
— disabled
refresh-stale-ip Mobility forces station to renew its stale IP (assuming its DHCP) by
deauthorizing the station.
stale-timeout Number of seconds the mobility state is retained after the loss of
connectivity. This allows authentication state and mobility information
to be preserved on the home agent controller. The default is 60
seconds but can be safely increased. Note that in many case a station
state is deleted without waiting for the stale timeout; user delete from
management, foreign agent to foreign agent handoff, etc. (This is
different from the no-service-timeout; no-service-timeout occurs up
front while the stale-timeout begins when mobility service is provided
but the connection is disrupted for some reason.)
30-3600 60 seconds
stand-alone-AP Enables support for third party or standalone APs. When this is
enabled, broadcast packets are not used to trigger mobility and
packets from untrusted interfaces are accepted.
If mobility is enabled, you must also enable standalone AP for the
client to connect to the controller’s untrusted port. If the controller
learns wired users via the following methods, enable standalone AP:
 Third party AP connected to the controller through the untrusted
port.
 Clients connected to ENET1 on APs with two ethernet ports.
 Wired user connected directly to the controller’s untrusted port.
— disabled
trail-length Specifies the maximum number of entries (client moves) stored in the
user mobility trail.
1-100 30
trail-timeout Specifies the maximum interval, in seconds, an inactive mobility trail is
held.
120-86400 3600 seconds
Note: The re-home parameter requires the PEFNG license.