Users Guide

Table Of Contents
654| IP Mobility Dell Networking W-Series ArubaOS 6.5.x| User Guide
Mobile Client Roaming Locations
You can view information about where a mobile user has been in the mobility domain. This information can
only be viewed on the client’s home agent.
In the WebUI
1. Navigate to the Monitoring > controller > Clients page.
2. Click Status. The mobility state section contains information about the user locations.
In the CLI
show ip mobile trail <ip-address>|<mac-address>
HA Discovery on Association
In normal circumstances, a controller performs an HA discovery only when it is aware of the client’s IP address
which it learns through the ARP or any L3 packet from the client. This limitation of learning the client’s IP and
then performing the HA discovery is not effective when the client performs an inter switch move silently (does
not send any data packet when in power save mode). This behavior is commonly seen with various handheld
devices, Wi-Fi phones and so on. This delays HA discovery and eventually results in any loss of downstream
traffic that is meant for the mobile client.
When HA discovery on association is triggered, the foreign agent controller to which the client is associated,
sends a unicast request to all controllers within the mobility domain to find if any one of the controllers has the
IP mobility state information of the client.
With HA discovery on association, a controller can perform a HA discovery as soon as the client is associated.
This feature is enabled by default. This option will also poll for all potential HAs.
In the CLI
To configure the mobility association:
wlan virtual-ap default ha-disc-onassoc
Configuring Advanced Mobility Functions
You can configure various parameters that pertain to mobility functions on a controller in a mobility domain
using either the WebUI or the CLI.
In the WebUI
1. Navigate to the Configuration > Advanced Services > IP Mobility page.
2. Select the Global Parameters tab.
3. Configure your desired IP mobility settings. Table 143 describes the parameters you can configure on the
Global Parameters tab.