Brocade Mobility 7131 Access Point Product Reference Guide (Supporting software release 4.4.0.0 and later) - Manual (Page 487)

Brocade Mobility 7131 Access Point Product Reference Guide 475
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For sites with no secure link to the central location, an AAP can be configured to use an IPSec
tunnel (with AES 256 encryption) for adoption. The tunnel configuration is automatic on the AAP
side and requires no manual VPN policy be configured. On the switch side, configuration updates
are required to adopt the AAP using an IPSec tunnel.
To review a sample AAP configuration, see Sample Switch Configuration File for IPSec and
Independent WLAN on page 10-484.
Adaptive AP Switch Failure
In the event of a switch failure, an AAP's independent WLAN continues to operate without
disruption. The AAP attempts to connect to other switches (if available) in background. Extended
WLANs are disabled once switch adoption is lost. When a new switch is discovered and a
connection is secured, an extended WLAN can be enabled.
If a new switch is located, the AAP synchronizes its configuration with the located switch once
adopted. If Remote Site Survivability (RSS) is disabled, the independent WLAN is also disabled in
the event of a switch failure.
Remote Site Survivability (RSS)
RSS can be used to turn off RF activity on an AAP if it loses adoption (connection) to the switch.
NOTE
For a dependant AAP, independent WLANs continue to beacon for three days in the absence of a
switch.
Adaptive Mesh Support
An AAP can extend existing mesh functionality to a switch managed network. All mesh APs are
configured and managed through the wireless switch. APs without a wired connection form a mesh
backhaul to a repeater or a wired mesh node and then get adopted to the switch. Mesh nodes with
existing wired access get adopted to the switch like a wired AAP.
Mesh AAPs apply configuration changes 300 seconds after the last received switch configuration
message. When the configuration is applied on the Mesh AAP, the radios shutdown and re-initialize
(this process takes less than 2 seconds), forcing associated MUs to be deauthenticated and the
Mesh link will go down. MUs are able to quickly associate, but the Mesh link will need to be
re-established before MUs can pass traffic. This typically takes about 90 to 180 seconds
depending on the size of the mesh topology.
NOTE
When mesh is used with AAPs, the "ap-timeout" value needs to be set to a higher value (for example,
180 seconds) so Mesh AAPs remain adopted to the switch during the period when the configuration
is applied and mesh links are re-established.
RSS State Independent WLANs Extended WLANs
RSS Enabled WLAN continues beaconing WLAN continues beaconing but AP does allow
clients to associate on that WLAN
RSS Disabled WLAN stops beaconing WLAN stops beaconing