R2511-HP MSR Router Series Network Management and Monitoring Configuration Guide(V5)

ManualsBrandsHP ManualsNetwork HardwareHP MSR1003-8 AC Router

Configuring NTP client/server mode

If you specify the source interface for NTP messages by specifying the source interface source-interface

option, NTP uses the primary IP address of the specified interface as the source IP address of the NTP

messages.

A device can act as a server to synchronize other devices only after it is synchronized. If a server has a

stratum level higher than or equal to a client, the client does not synchronize to that server.

In the ntp-service unicast-server command, ip-address must be a unicast address, rather than a

broadcast address, a multicast address or the IP address of the local clock.

To specify an NTP server on the client:

Ste

Command

Remarks

1. Enter system view.

system-view N/A

2. Specify an NTP server for the

device.

ntp-service unicast-server

[ vpn-instance vpn-instance-name ]

{ ip-address | server-name }

[ authentication-keyid keyid |

priority | source-interface

interface-type interface-number |

version number ] *

By default, no NTP server is

specified.

You can configure multiple servers

by repeating the command. The

clients will select the optimal

reference source.

Configuring the NTP symmetric peers mode

For devices operating in symmetric mode, specify a symmetric-passive peer on a symmetric-active peer.

Follow these guidelines when you configure the NTP symmetric peers mode:

• Use the ntp-service refclock-master command or any NTP configuration command in Configuring

NTP ope

ration modes to enable NTP. Otherwise, a symmetric-passive peer does not process NTP

messages from a symmetric-active peer.

• To ensure time synchronization accuracy, do not specify different reference sources for a symmetric

active peer and a symmetric passive peer if they operate as the NTP client for the client/server,

broadcast, and multicast modes.

• Either the symmetric-active peer or the symmetric-passive peer must be in synchronized state.

Otherwise, clock synchronization does not proceed.

• After you specify the source interface for NTP messages by specifying the source interface

source-interface option, the source IP address of the NTP messages is set as the primary IP address

of the specified interface.

• You can configure multiple symmetric-passive peers by repeating the ntp-service unicast-peer

command.

To specify a symmetric-passive peer on the active peer:

Ste

Command

Remarks

1. Enter system view.

system-view N/A