Concept Guide

520| ip mobile proxy Dell Networking W-Series ArubaOS 6.5.x| Reference Guide
Parameter Description Range Default
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:
l Third party AP connected to the controller through
the untrusted port.
l Clients connected to ENET1 on APs with two ethernet
ports.
l 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
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:
l 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.
l 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 the packet trace for the given MAC address:
ip mobile packet-trace 00:40:96:a6:a1:a4