Disabling Ntp Services On A Specific Interface - Cisco C3201FESMIC-TP= - 3201 Fast EN Switch Mobile Interface Card Expansion Module Software Configuration Manual

Administering the WMIC
3.
4.
If the source IP address matches the access lists for more than one access type, the first access type is
granted. If no access groups are specified, all access types are granted to all devices. If any access groups
are specified, only the specified access types are granted.
To remove access control to the WMIC NTP services, use the no ntp access-group {query-only |
serve-only | serve | peer} command in global configuration mode.
This example shows how to configure the WMIC to allow itself to synchronize to a peer from access
list 99. However, the WMIC restricts access to allow only time requests from access list 42:
bridge# configure terminal
bridge(config)# ntp access-group peer 99
bridge(config)# ntp access-group serve-only 42
bridge(config)# access-list 99 permit 172.20.130.5
bridge(config)# access list 42 permit 172.20.130.6

Disabling NTP Services on a Specific Interface

NTP services are enabled on all interfaces by default.
To disable NTP packets from being received on an interface, follow these steps, beginning in privileged
EXEC mode:
Command
Step 1 configure terminal
Step 2 interface interface-id
Step 3 ntp disable
Step 4 end
Step 5 show running-config
Step 6
copy running-config startup-config
To reenable receipt of NTP packets on an interface, use the no ntp disable command in interface
configuration mode.
serve-only—Allows only time requests from a device whose address passes the access list criteria.
query-only—Allows only NTP control queries from a device whose address passes the access list
criteria.
Purpose
Enters global configuration mode.
Enters interface configuration mode, and specify the interface to disable.
Disables NTP packets from being received on the interface.
By default, all interfaces receive NTP packets.
Returns to privileged EXEC mode.
Verifies your entries.
(Optional) Saves your entries in the configuration file.
Cisco 3200 Series Wireless MIC Software Configuration Guide
Managing the System Time and Date
53