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Availability and Controller Functionality
Summit WM20 User Guide, Software Release 4.2
152
For more information, see
“Configuring the Default AP Settings” on page 65
.
From the viewpoint of a Wireless AP, if a Summit WM Controller or the connection to it fails, the
Wireless AP begins its discovery process. The Wireless AP is directed to the appropriate backup
controller of the pair. This connection may require the Wireless AP to reboot. Users on the Wireless AP
must log in again and be authenticated on the second Summit WM Controller.
NOTE
The availability feature provides APs with a list of interfaces to which the AP should attempt to automatically
connect to when a connection with an active controller link is lost. The provided list identifies the local active
interfaces (enabled on the primary and backup controllers) for the active controller as well as the active interfaces
for the backup controller. The list is sorted by top-down priority. If the active link is lost (poll failure), the AP
automatically scans (pings) all addresses in its availability interface list. The AP will then connect to the highest
priority interface that responds to its probe.
Availability Prerequisites
Before you begin, ensure you have completed the following:
●
Choose the primary and secondary Summit WM Controllers.
NOTE
It is recommended that the primary and secondary Summit WM Controllers are identical platforms. For more
information on availability support between platforms, see the
Summit WM20 Technical Reference Guide
.
●
Verify the network accessibility 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 Summit WM Controllers.
Now set up each Summit WM Controller separately. One method is as follows:
1
In the
AP Registration
screen, set up each Summit WM Controller in Stand-alone Mode.
2
In the
Topology
tab, define a WM-AD on each Summit WM Controller with the same SSID. The IP
addresses must be unique. For more information,
“Topology for a WM-AD” on page 98
. A Summit
WM Controller WM20 VLAN Bridged WM-AD can permit two controllers to share the same subnet
(different IP addresses). This setup provides support for mobility users in a VLAN Bridged WM-AD.
3
On both Summit WM 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 Summit WM Controllers as an availability pair.
5
On each Summit WM 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 WM-ADs to the foreign APs:
Содержание Summit WM20
Страница 8: ...Table of Contents Summit WM20 User Guide Software Release 4 2 8 ...
Страница 20: ...About this Guide Summit WM20 User Guide Software Release 4 2 20 ...
Страница 54: ...Configuring the Summit WM Controller Summit WM20 User Guide Software Release 4 2 54 ...
Страница 96: ...WM Access Domain Services Summit WM20 User Guide Software Release 4 2 96 ...
Страница 150: ...WM Access Domain Services Configuration Summit WM20 User Guide Software Release 4 2 150 ...
Страница 168: ...Availability and Controller Functionality Summit WM20 User Guide Software Release 4 2 168 ...
Страница 172: ...Working With Third Party APs Summit WM20 User Guide Software Release 4 2 172 ...
Страница 184: ...Working With the Summit WM Series Spy Summit WM20 User Guide Software Release 4 2 184 ...
Страница 194: ...Working With Reports and Displays Summit WM20 User Guide Software Release 4 2 194 ...
Страница 216: ...Performing System Maintenance Summit WM20 User Guide Software Release 4 2 216 ...