User's Manual

Roaming status can be one of the following:
Status Type Description
Wireless This client is on its home agent controller and the client is on the VLAN on which it
has an IP address.
Visitor This client is visiting this controller and the controller is not its home agent.
Away This client is currently away from its home agent controller.
Foreign VLAN This client is on its home agent controller but the client is currently on a different
VLAN than the one on which it has an IP address.
Stale This should be a temporary state as the client will either recover connectivity or the
client’s entry is deleted when the stale timer expires.
Table 116: User Roaming status
Viewing specific client information using the CLI
You can use the following CLI command to view the home agent, foreign agent, and roaming status for a
specific mobile client:
show ip mobile trace <ip-address>|<mac-address>
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
Use the following CLI command to view the user locations of a roaming client:
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.
Setting up Mobility Association using the CLI
Use the following command to configure the mobility association:
Dell Networking W-Series ArubaOS 6.4.x | User Guide IP Mobility | 605