Quick Reference Guide

Troubleshooting
202
ProSAFE Wireless Controller WC9500
Problems with Date and Time
The Time Settings screen displays the current date and time of day (see Manage the Time
Settings on page 48). The wireless controller uses the Network Time Protocol (NTP) to obtain
the current time from one of several network time servers on the Internet. Each entry in the
log is stamped with the date and time of day.
When the date shown is January 1, 2000, the wireless controller has not yet successfully
reached a network time server. V
erify that the wireless controller can reach the Internet. If you
have just completed configuring the wireless controller, wait at least five minutes and check
the date and time again.
Problems with Access Points
If you encounter access point discovery or connection problems, the information in this
section might help you to resolve these problems.
Discovery Problems
If the wireless controller does not discover any or all access points, check the following:
For all access points:
• Make sure that the wireless controller is connected to the LAN (see Ethernet Port LEDs
Are Not Lit on page 199).
• Make sure that 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 Guidelines on page 91).
• Make sure that the access points run at least their initial firmware release or a newer
version. For firmware requirements, see NETGEAR ProSAFE Access Points on page 15.
For local access points that are installed across a Layer 3 network:
• V
erify 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.
• Except for access points in factory default state that are in the same Layer 2 network, if
more than one access point has the same IP address, only one of them is discovered at a
time.
Y
ou have to add the access point to the managed list, change its IP address, and
run discovery again to discover the next access point with that IP address.
• Make sure that DHCP option 43 (vendor-specific information) is enabled on an external
DHCP server
. (Specifying an internal DHCP server on the wireless controller
automatically enables DHCP option 43 with the IP address of the wireless controller.)
For more information, see
Access Point Discovery Guidelines on page 91.