Configuring Ntp Access Restrictions - Cisco Catalyst 9200 Configuration Manual

Configuring NTP Access Restrictions

Command or Action
Device(config-if)# exit
Step 7
[no] ntp broadcastdelay microseconds
Example:
Device(config)# ntp broadcastdelay 100
Step 8 end
Example:
Device(config)# end
Configuring NTP Access Restrictions
You can control NTP access on two levels as described in these sections:
Creating an Access Group and Assigning a Basic IP Access List
To create an access group and assign a basic IP access list, perform this procedure:
SUMMARY STEPS
1. enable
2. configure terminal
3. [no] ntp access-group {query-only | serve-only | serve | peer} access-list-number
4. access-list access-list-number permit source [source-wildcard]
5. end
DETAILED STEPS
Command or Action
Step 1
enable
Example:
Device> enable
Step 2 configure terminal
Example:
Device# configure terminal
System Management Configuration Guide, Cisco IOS XE Gibraltar 16.10.x (Catalyst 9200 Switches)
22
Purpose
(Optional) Change the estimated round-trip delay between
the device and the NTP broadcast server
The default is 3000 microseconds. The range is from 1 to
999999.
Use the no form of this command to disable the interface
from receiving NTP broadcast packets.
Returns to privileged EXEC mode.
Purpose
Enables privileged EXEC mode.
Enter your password if prompted.
Enters global configuration mode.
Administering the Device