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Table 42: NTP Settings, Field, Description, Using Network Time Protocol

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Unified Access Point Administrator's Guide Enabling the Time Settings (NTP) Field Set System Time NTP Server (Use NTP) System Date (Manual configuration) System Time (Manual configuration) Time Zone Adjust Time for Daylight Savings DST Start (24 HR) DST End (24 HR) DST Offset (minutes) Table 42: NTP Settings Description NTP provides a way for the AP to obtain and maintain its time from a server on the network. Using an NTP server gives your AP the ability to provide the correct time of day in log messages and session information. Choose to use a network time protocol (NTP) server to determine the system time, or set the system time manually: • To permit the AP to poll an NTP server, click Using Network Time Protocol (NTP). • To prevent the AP from polling an NTP server, click Manually. If NTP is enabled, specify the NTP server to use. You can specify the NTP server by hostname or IP address, although using the IP address is not recommended as these can change more readily. If you specify a hostname, note the following requirements: • The length must be between 1-63 characters. • Upper and lower case characters, numbers, and hyphens are accepted. • The first character must be a letter (a-z or A-Z), and the last character cannot be a hyphen. Specify the current month, day, and year. Specify the current time in hours and minutes. The system uses a 24‐hour clock, so 6:00 PM is configured as 18:00. Select your local time zone from the menu. The default is USA (Pacific). Select to have the system adjust the reported time for Daylight Savings Time (DST). When this field is selected, fields to configure Daylight Savings Time settings appear. Configure the date and time to begin Daylight Savings Time for the System Time. Configure the date and time to end Daylight Savings Time for the System Time. Select the number of minutes to offset DST. The default is 60 minutes. Note: After you configure the Time settings, you must click Apply to apply the changes and to save the settings. Changing some settings might cause the AP to stop and restart system processes. If this happens, wireless clients will temporarily lose connectivity. We recommend that you change AP settings when WLAN traffic is low. D-Link November 2011 Unified Access Point Administrator's Guide Page 110

Section	Page
Table of Contents	3
List of Figures	8
List of Tables	10
Section 1: About This Document	12
Document Organization	12
Additional Documentation	12
Document Conventions	13
Online Help, Supported Browsers, and Limitations	14
Section 2: Getting Started	15
Administrator’s Computer Requirements	16
Wireless Client Requirements	17
Dynamic and Static IP Addressing on the AP	17
Recovering an IP Address	18
Discovering a Dynamically Assigned IP Address	18
Installing the UAP	19
Basic Settings	22
Connecting to the AP Web Interface by Using the IPv6 Address	24
Using the CLI to View the IP Address	24
Configuring the Ethernet Settings	25
Using the CLI to Configure Ethernet Settings	26
Configuring IEEE 802.1X Authentication	27
Using the CLI to Configure 802.1X Authentication Information	27
Verifying the Installation	28
Configuring Security on the Wireless Access Point	29
Section 3: Viewing Access Point Status	30
Viewing Interface Status	31
Wired Settings (Internal Interface)	31
Wireless Settings	31
Viewing Events	32
Configuring Persistent Logging Options	32
Configuring the Log Relay Host for Kernel Messages	34
Enabling or Disabling the Log Relay Host on the Events Page	34
Viewing Transmit and Receive Statistics	36
Viewing Associated Wireless Client Information	38
Viewing TSPEC Client Associations	39
Link Integrity Monitoring	41
Viewing Rogue AP Detection	41
Saving and Importing the Known AP List	44
Viewing Managed AP DHCP Information	45
Viewing TSPEC Status and Statistics Information	45
Viewing TSPEC AP Statistics Information	47
Viewing Radio Statistics Information	48
Viewing Email Alert Operational Status	50
Section 4: Managing the Access Point	51
Ethernet Settings	51
Wireless Settings	54
Using the 802.11h Wireless Mode	57
Enabling AeroScout™ Engine Support	57
Modifying Radio Settings	58
Configuring Radio and VAP Scheduler	65
Scheduler Association Settings	68
Virtual Access Point Settings	70
None (Plain-text)	74
Static WEP	74
Static WEP Rules	76
IEEE 802.1X	76
WPA Personal	78
WPA Enterprise	79
Configuring the Wireless Distribution System (WDS)	81
WEP on WDS Links	84
WPA/PSK on WDS Links	84
Controlling Access by MAC Authentication	85
Configuring a MAC Filter and Station List on the AP	85
Configuring MAC Authentication on the RADIUS Server	87
Configuring Load Balancing	88
Managed Access Point Overview	89
Transitioning Between Modes	89
Configuring Managed Access Point Settings	90
Configuring 802.1X Authentication	92
Creating a Management Access Control List	94
Section 5: Configuring Access Point Services	95
Configuring SNMP on the Access Point	95
Web Server Settings	99
Setting the SSH Status	101
Setting the Telnet Status	101
Configuring Quality of Service	102
Configuring Email Alert	106
Enabling the Time Settings (NTP)	109
Section 6: Configuring SNMPv3	111
Configuring SNMPv3 Views	111
Configuring SNMPv3 Groups	113
Configuring SNMPv3 Users	115
Configuring SNMPv3 Targets	116
Section 7: Maintaining the Access Point	117
Saving the Current Configuration to a Backup File	117
Restoring the Configuration from a Previously Saved File	118
Performing AP Maintenance	120
Resetting the Factory Default Configuration	120
Rebooting the Access Point	120
Upgrading the Firmware	120
Packet Capture Configuration and Settings	122
Packet Capture Status	124
Packet Capture Parameter Configuration	124
Packet File Capture	125
Remote Packet Capture	125
Packet Capture File Download	127
Section 8: Configuring Client Quality of Service	128
Configuring VAP QoS Parameters	128
Managing Client QoS ACLs	131
IPv4 and IPv6 ACLs	131
MAC ACLs	131
ACL Configuration Process	131
Creating a DiffServ Class Map	138
Defining DiffServ	138
Creating a DiffServ Policy Map	144
Client QoS Status	146
Configuring RADIUS-Assigned Client QoS Parameters	147
Section 9: Clustering Multiple APs	149
Managing Access Points in the Cluster	149
Clustering Single and Dual Radio APs	149
Viewing and Configuring Cluster Members	149
Removing an Access Point from the Cluster	151
Adding an Access Point to a Cluster	152
Navigating to Configuration Information for a Specific AP	152
Navigating to an AP by Using its IP Address in a URL	152
Managing Cluster Sessions	153
Sorting Session Information	154
Configuring and Viewing Channel Management Settings	154
Stopping/Starting Automatic Channel Assignment	155
Viewing Current Channel Assignments and Setting Locks	156
Viewing the Last Proposed Set of Changes	156
Configuring Advanced Settings	157
Viewing Wireless Neighborhood Information	158
Viewing Details for a Cluster Member	160
Appendix A: Default AP Settings	161
Appendix B: Configuration Examples	164
Configuring a VAP	164
VAP Configuration from the Web Interface	164
VAP Configuration from the CLI	165
VAP Configuration Using SNMP	166
Configuring Radio Settings	166
Radio Configuration from the Web Interface	166
Radio Configuration from the CLI	168
Radio Configuration Using SNMP	168
Configuring the Wireless Distribution System	169
WDS Configuration from the Web Interface	169
WDS Configuration from the CLI	170
WDS Configuration Using SNMP	171
Clustering Access Points	172
Clustering APs by Using the Web Interface	172
Clustering APs by Using the CLI	173
Clustering APs by Using SNMP	174
Configuring Client QoS	174
Configuring QoS by Using the Web Interface	174
ACL Configuration	174
DiffServ Configuration	176
Configuring QoS by Using the CLI	179
ACL Configuration	179
DiffServ Configuration	179
ACL Configuration	180

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Enabling the Time Settings (NTP)

D-Link

Unified Access Point Administrator’s Guide

November 2011

Page 110

Unified Access Point Administrator’s Guide

Table 42: NTP Settings

Field

Description

Set System Time

NTP provides a way for the AP to obtain and maintain its time from a server on

the network. Using an NTP server gives your AP the ability to provide the

correct time of day in log messages and session information.

Choose to use a network time protocol (NTP) server to determine the system

time, or set the system time manually:

•

To permit the AP to poll an NTP server, click

Using Network Time Protocol

(NTP)

•

To prevent the AP from polling an NTP server, click

Manually.

NTP Server (Use NTP)

If NTP is enabled, specify the NTP server to use.

You can specify the NTP server by hostname or IP address, although using the

IP address is not recommended as these can change more readily.

If you specify a hostname, note the following requirements:

•

The length must be between 1–63 characters.

•

Upper and lower case characters, numbers, and hyphens are accepted.

•

The first character must be a letter (a – z or A – Z), and the last character

cannot be a hyphen.

System Date (Manual

configuration)

Specify the current month, day, and year.

System Time (Manual

configuration)

Specify the current time in hours and minutes. The system uses a 24

‐

hour

clock, so 6:00 PM is configured as 18:00.

Time Zone

Select your local time zone from the menu. The default is

USA (Pacific)

Adjust Time for Daylight

Savings

Select to have the system adjust the reported time for Daylight Savings Time

(DST). When this field is selected, fields to configure Daylight Savings Time

settings appear.

DST Start (24 HR)

Configure the date and time to begin Daylight Savings Time for the System

Time.

DST End (24 HR)

Configure the date and time to end Daylight Savings Time for the System Time.

DST Offset (minutes)

Select the number of minutes to offset DST. The default is

minutes.

Note:

After you configure the Time settings, you must click

Apply

to apply the changes and to save

the settings. Changing some settings might cause the AP to stop and restart system processes. If this

happens, wireless clients will temporarily lose connectivity. We recommend that you change AP

settings when WLAN traffic is low.