Configuring Ntp - Cisco Aironet 1100 Series Installation And Configuration Manual

Managing the System Time and Date
Figure 6-1
Local
workgroup
servers
Workstations

Configuring NTP

Cisco Aironet 1100 Series Access Points do not have a hardware-supported clock, and they cannot
function as an NTP master clock to which peers synchronize themselves when an external NTP source
is not available. These access points also have no hardware support for a calendar. As a result, the ntp
update-calendar and the ntp master global configuration commands are not available.
This section contains this configuration information:
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Cisco Aironet 1100 Series Access Point Installation and Configuration Guide
6-16
Typical NTP Network Configuration
Catalyst 3550
switch
Catalyst 3550
switch
Catalyst 3550
switch
Workstations
Default NTP Configuration, page 6-17
Configuring NTP Authentication, page 6-17
Configuring NTP Associations, page 6-19
Configuring NTP Broadcast Service, page 6-20
Configuring NTP Access Restrictions, page 6-21
Configuring the Source IP Address for NTP Packets, page 6-23
Displaying the NTP Configuration, page 6-24
These switches are configured in
NTP server mode (server association)
with the Catalyst 6500 series switch.
This switch is configured as an NTP
peer to the upstream and downstream
Catalyst 3550 switches.
Chapter 6 Administering the Access Point
Catalyst 6500
series switch
(NTP master)
Catalyst 3550
switch
Catalyst 3550
switch
OL-2851-01