hwc_controlleravailmobility.fm
A31003-W1040-U101-1-7619, July 2006 DRAFT
HiPath Wireless Controller, Access Points and Convergence Software V4.0, C10/C100/C1000 User Guide
191
Availability, mobility, and controller functionality
Availability overview
8.1.1
Availability prerequisites
Before you begin, ensure you have completed the following:
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Choose the primary and secondary HiPath Wireless Controllers.
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Purchased two availability licenses to enable availability on a pair of controllers.
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Verify the network reacheability for the TCP/IP connection between the two controllers. The
availability link is established as a TCP session on port 13907.
●
Set up a DHCP server for AP subnets to support Option 78 for SLP, so that it points to the
IP addresses of the physical interfaces on both HiPath Wireless Controllers.
Now set up each HiPath Wireless Controller separately. One method is as follows:
1.
In the AP Registration screen, set up each HiPath Wireless Controller in Stand-alone Mode
and Secure Mode (allow only approved Wireless APs to connect).
2.
In the VNS Configuration, Topology screen, define a VNS on each HiPath Wireless
Controller with the same SSID. The IP addresses must be unique. For more information,
see
A HiPath Wireless Controller C2400 VLAN Bridged VNS can permit two controllers to
share the same subnet (different IP addresses). This setup provides support for mobility
users in a VLAN Bridged VNS.
Section 7.1, “Topology for a VNS”, on page 124.
3.
On both HiPath Wireless Controllers, set the Registration Mode to Allow only approved so
that no more wireless APs can register unless they are approved by the administrator.
4.
In the AP Registration screen, enable the two HiPath Wireless Controllers as an availabiity
pair.
5.
On each HiPath Wireless Controller, in the Access Approval screen, check the status of
the wireless APs and approve any APs that should be connected to that controller.
System AP defaults can be used to assign a group of VNSs to the foreign APs:
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If the APs are not yet known to the system, the AP will be initially configured according
to AP default settings. To ensure better transition in availability, it is recommended that
the AP default settings match the desired VNS assignment for failover APs.
●
AP assignment to VNSs according to the AP default settings can be overwritten by
manually modifying the AP VNS assignment. (For example, select and assign each
VNS that the AP should connect to.)
●
If specific foreign APs have been assigned to a VNS, those specific foreign AP
assignments are used.