Problems With Access Points; Using The Diagnostic Tools On The Wireless Controller - NETGEAR WC7520 - ProSafe 20-AP Wireless Controller Reference Manual

ProSafe 20-AP Wireless Controller WC7520 Reference Manual

Problems With Access Points

If the wireless controller does not discover any or all access points, check the following:
• Make sure the wireless controller is connected to the LAN (see
page 145).
• Make sure you have entered the correct IP range if the access points function in different
VLANs, are behind an IP subnet, or are already installed and working in standalone mode
(see Access Point Discovery
• Verify that access points that are already installed and working in standalone mode have
SSH and SNMP enabled (which is the default setting).
• Make sure that UDP port number 7890 is unblocked in the firewall.
• If more than one access point has the same IP address, then only one of them is
discovered at a time. (This is not applicable to access points in factory default state that
are in the same layer 2 network.) Add one access point to the managed list, change its IP
address, and then run discovery again to discover the next access point with the same IP
address.
• For access points that are installed across a layer 3 network, make sure that either one of
the following options is enabled:
- Multicast routing for IP address 254.0.100.250 between the wireless controller and
the access point.
- DHCP option 43 (vendor specific information) on the DHCP server. (Specifying a
DHCP server on the wireless controller automatically enables DHCP option 43 with
its own IP address.)

Using the Diagnostic Tools on the Wireless Controller

As part of the diagnostics functions on the wireless controller, you can ping a managed
access point from the wireless controller or trace its route from the wireless controller.
To ping an access point:
1. Select Diagnostics > Ping. The Ping screen displays.
on page 46).
LAN Port LEDs Not On
Chapter 12: Troubleshooting
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