R3303-HP HSR6800 Routers Network Management and Monitoring Configuration Guide

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 D has synchronized to Router C. The stratum level of Router D is 3,

and that of Router C is 2.

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

up between Router D and Router C.

[RouterD-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 2 254 64 62 -16.0 31.0 16.6

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

Total associations : 1

4. Configure Router B:

Because Router A and Router C are on different subnets, you must enable the multicast functions on

Router B before Router A can receive multicast messages from Router C.

# Enable the IP multicast function.

<RouterB> system-view

[RouterB] multicast routing-enable

[RouterB] interface gigabitethernet 2/0/1

[RouterB-GigabitEthernet2/0/1] igmp enable

[RouterB-GigabitEthernet2/0/1] igmp static-group 224.0.1.1

[RouterB-GigabitEthernet2/0/1] quit

[RouterB] interface gigabitethernet 2/0/2

[RouterB-GigabitEthernet2/0/2] pim dm

5. Configure Router A:

<RouterA> system-view

[RouterA] interface gigabitethernet 2/0/1

# Configure Router A to operate in multicast client mode and receive multicast messages on

GigabitEthernet 2/0/1.

[RouterA-GigabitEthernet2/0/1] ntp-service multicast-client

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

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

Clock status: synchronized

Clock stratum: 3

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: 40.00 ms

Root dispersion: 10.83 ms

Peer dispersion: 34.30 ms

Reference time: 16:02:49.713 UTC Sep 19 2005 (C6D95F6F.B6872B02)

The output shows that Router A has synchronized to Router C. The stratum level of Router A is 3,

and that of Router C is 2.