R3303-HP HSR6800 Routers Network Management and Monitoring Configuration Guide

[RouterC-GigabitEthernet2/0/1] quit

# Router A synchronizes its local clock based on the received broadcast messages sent from Router

# Display NTP service status information on Router A.

[RouterA-GigabitEthernet2/0/1] display ntp-service status

Clock status: synchronized

Clock stratum: 4

Reference clock ID: 3.0.1.31

Nominal frequency: 64.0000 Hz

Actual frequency: 64.0000 Hz

Clock precision: 2^7

Clock offset: 0.0000 ms

Root delay: 31.00 ms

Root dispersion: 8.31 ms

Peer dispersion: 34.30 ms

Reference time: 16:01:51.713 UTC Sep 19 2005 (C6D95F6F.B6872B02)

The output shows that Router A has synchronized to Router C. The stratum level of Router A is 4,

and that of Router C is 3.

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

up between Router A and Router C.

[RouterA-GigabitEthernet2/0/1] display ntp-service sessions

source reference stra reach poll now offset delay disper

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

[1234] 3.0.1.31 127.127.1.0 3 254 64 62 -16.0 32.0 16.6

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

Total associations : 1

# NTP authentication is enabled on Router B, but not enabled on Router C, so Router B cannot

synchronize to Router C.

[RouterB-GigabitEthernet2/0/1] display ntp-service status

Clock status: unsynchronized

Clock stratum: 16

Reference clock ID: none

Nominal frequency: 100.0000 Hz

Actual frequency: 100.0000 Hz

Clock precision: 2^18

Clock offset: 0.0000 ms

Root delay: 0.00 ms

Root dispersion: 0.00 ms

Peer dispersion: 0.00 ms

Reference time: 00:00:00.000 UTC Jan 1 1900(00000000.00000000)

# Enable NTP authentication on Router C. Configure an NTP authentication key, with the key ID of

88 and key value of 123456. Specify the key as a trusted key.

[RouterC] ntp-service authentication enable

[RouterC] ntp-service authentication-keyid 88 authentication-mode md5 123456

[RouterC] ntp-service reliable authentication-keyid 88

# Specify Router C as an NTP broadcast server, and associate the key 88 with Router C.

[RouterC] interface gigabitethernet 2/0/1