R3303-HP HSR6800 Routers Network Management and Monitoring Configuration Guide

Configuration procedure

1. Set the IP address for each interface as shown in Figure 27. (Details not shown.)

2. Configure Router A:

# Specify the local clock as the reference source, with the stratum level 2.

<RouterA> system-view

[RouterA] ntp-service refclock-master 2

3. Configure Router B:

# Specify Router A as the NTP server of Router B.

<RouterB> system-view

[RouterB] ntp-service unicast-server 3.0.1.31

4. Configure Router C (after Router B is synchronized to Router A):

# Specify the local clock as the reference source, with the stratum level 1.

<RouterC> system-view

[RouterC] ntp-service refclock-master 1

# Configure Router B as a symmetric peer after local synchronization.

[RouterC] ntp-service unicast-peer 3.0.1.32

In the step above, Router B and Router C are configured as symmetric peers, with Router C in the

symmetric-active mode and Router B in the symmetric-passive mode. Because the stratus level of

Router C is 1 while that of Router B is 3, Router B synchronizes to Router C.

# Display the NTP status of Router B after clock synchronization.

[RouterB] display ntp-service status

Clock status: synchronized

Clock stratum: 2

Reference clock ID: 3.0.1.33

Nominal frequency: 64.0000 Hz

Actual frequency: 64.0000 Hz

Clock precision: 2^7

Clock offset: -21.1982 ms

Root delay: 15.00 ms

Root dispersion: 775.15 ms

Peer dispersion: 34.29 ms

Reference time: 15:22:47.083 UTC Sep 19 2005 (C6D95647.153F7CED)

The output shows that Router B has synchronized to Router C. The stratum level of Router B is 2, and

that of Router C is 1.

# Display the NTP session information of Router B, which shows that an association has been set

up between Router B and Router C.

[RouterB] display ntp-service sessions

source reference stra reach poll now offset delay disper

**************************************************************************

[245] 3.0.1.31 127.127.1.0 2 15 64 24 10535.0 19.6 14.5

[1234] 3.0.1.33 LOCL 1 14 64 27 -77.0 16.0 14.8

note: 1 source(master),2 source(peer),3 selected,4 candidate,5 configured

Total associations : 2