R3166-R3206-HP High-End Firewalls System Management and Maintenance Configuration Guide-6PW101
100
# Configure Firewall D to work in the broadcast client mode and receive broadcast messages on GE
0/1.
<FirewallD> system-view
[FirewallD] interface gigabitethernet 0/1
[FirewallD-GigabitEthernet0/1] ntp-service broadcast-client
3. Configuration on Firewall A.
# Configure Firewall A to work in the broadcast client mode and receive broadcast messages on GE
0/1.
<FirewallA> system-view
[FirewallA] interface gigabitethernet 0/1
[FirewallA-GigabitEthernet0/1] ntp-service broadcast-client
Because Firewall A and Firewall C are on different subnets, Firewall A cannot receive the broadcast
messages from Firewall C. Firewall D gets synchronized upon receiving a broadcast message from
Firewall C.
# View the NTP status of Firewall D after clock synchronization.
[FirewallD] 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: 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)
As shown above, Firewall D has been synchronized to Firewall C and the clock stratum level of Firewall
D is 3, while that of Firewall C is 2.
# View the NTP session information of Firewall D, which shows that an association has been set up
between Firewall D and Firewall C.
[FirewallD] 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 32.0 16.6
note: 1 source(master),2 source(peer),3 selected,4 candidate,5 configured
Total associations : 1
Configuring NTP multicast mode
Network requirements
• Firewall C’s local clock is to be used as a reference source, with the stratum level of 2.
• Firewall C works in the multicast server mode and sends out multicast messages from GE0/1.
• Firewall D and Firewall A work in the multicast client mode and receive multicast messages through
their respective GE0/1.