Cisco ASR 9000 Series User Manual

PurposeCommand or Action
Enters NTP configuration mode.ntp
Example:
RP/0/RSP0/CPU0:router(config)# ntp
Step 2
Configures an interface from which the IP source address is taken.
source type interface-path-id
Step 3
Example:
RP/0/RSP0/CPU0:router(config-ntp)#
source POS 0/0/0/1
This interface is used for the source address for all packets sent to all
destinations. If a source address is to be used for a specific association,
use the source keyword in the peer or server command shown in
Configuring Poll-Based Associations, on page 209.
Note
Saves configuration changes.Use one of the following commands:
Step 4
•
end
•
When you issue the end command, the system prompts you to commit
changes:
Uncommitted changes found, commit them before
•
commit
Example:
RP/0/RSP0/CPU0:router(config-ntp)#
end
exiting(yes/no/cancel)?
[cancel]:
◦
Entering yes saves configuration changes to the running
configuration file, exits the configuration session, and returns the
router to EXEC mode.
or
RP/0/RSP0/CPU0:router(config-ntp)#
commit
◦
Entering no exits the configuration session and returns the router
to EXEC mode without committing the configuration changes.
◦
Entering cancel leaves the router in the current configuration session
without exiting or committing the configuration changes.
•
Use the commit command to save the configuration changes to the
running configuration file and remain within the configuration session.
Configuring the System as an Authoritative NTP Server
You can configure the router to act as an authoritative NTP server, even if the system is not synchronized to
an outside time source.
No specific command enables NTP; the first NTP configuration command that you issue enables NTP.Note
Cisco ASR 9000 Series Aggregation Services Router System Management Configuration Guide, Release 5.1.x
220
Implementing NTP
Configuring the System as an Authoritative NTP Server

Cisco ASR 9000 Series Specifications

General

Series	ASR 9000
Category	Network Router
Modular Design	Yes
Redundancy	Yes (Hardware and Software)
Operating System	Cisco IOS XR
Interfaces/Ports	10G, 40G, 100G, 400G Ethernet
Expansion Slots	Varies by model
Routing Protocol	BGP, OSPF, IS-IS, EIGRP
Management	CLI, SNMP, NETCONF
Power Supply	Redundant
Port Density	Varies by model
Power Supply Options	AC, DC
Memory	Varies by model
Storage	Varies by model
Dimensions	Varies by model
Weight	Varies by model