Brocade Mobility 5181 Access Point Product Reference Guide (Supporting software release 4.4.0.0) - Manual (Page 92)

78 Brocade Mobility 5181 Access Point Product Reference Guide
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Configuring LLDP Settings
4
CAUTION
If using the Radius time-based authentication feature to authenticate access point user
permissions, ensure UTC has been selected from the Time Zone field. If UTC is not selected, time
based authentication will not work properly. For information on configuring Radius time-based
authentication, see
“Defining user access permissions by group” on page 173.
5. If using an NTP server to supply system time to the access point, configure the NTP Server
Configuration field to define the server network address information required to acquire the
Mobility 5181 Access Point network time.
6. Click Apply to save any changes to the Date and time Settings screen. Navigating away from
the screen without clicking the Apply button results in all changes to the screen being lost.
7. Click Undo Changes (if necessary) to undo any changes made. Undo Changes reverts the
settings displayed on Date and Time Settings screen to the last saved configuration.
8. Click Logout to securely exit the Mobility 5181 Access Point applet. A prompt displays
confirming the logout before the applet is closed.
Configuring LLDP Settings
Link Layer Discovery Protocol (LLDP) is a Layer 2 protocol (IEEE standard 802.1AB) used to
determine the capabilities of devices such as repeaters, bridges, access points, routers and
wireless clients. LLDP enables devices to advertise their capabilities and media-specific
configurations. LLDP provides a method of discovering and representing the physical network
connections of a given network management domain. The LLDP neighbor discovery protocol allows
you to discover and maintain accurate network topologies in a multi-vendor environment.
Enable NTP on Mobility
5181 Access Point
Select the Enable NTP on Mobility 5181 Access Point checkbox to allow a
connection between the Mobility 5181 Access Point and one or more
specified NTP servers. A preferred, first alternate and second alternate NTP
server cannot be defined unless this checkbox is selected.
Disable this option (uncheck the checkbox) if Kerberos is not in use and
time synchronization is not necessary.
Preferred Time Server Specify the numerical (non DNS name) IP address and port of the primary
NTP server. The default port is 123.
First Alternate Time Server Optionally, specify the numerical (non DNS name) IP address and port of an
alternative NTP server to use for time synchronization if the primary NTP
server goes down.
Second Alternate Time
Server Optionally, specify the numerical (non DNS name) and port of yet another
NTP server for the greatest assurance of uninterrupted time
synchronization.
Synchronization Interval Define an interval in minutes the Mobility 5181 Access Point uses to
synchronize its system time with the NTP server. A synchronization interval
value from 15 minutes to 65535 minutes can be specified. For
implementations using Kerberos, a synchronization interval of 15 minutes
(default interval) or sooner is recommended.