Configuring Ntp Broadcast Mode; Configuring Ntp Broadcast Mode With Authentication - 3Com MSR 50 Series Configuration Manual

Configuring NTP
Broadcast Mode with
Authentication
[DeviceA] ntp-service authentication enable
# Set an authentication key.
[DeviceA] ntp-service authentication-keyid 42 authentication-mode md5 aNiceKey
# Specify the key as key as a trusted key.
[DeviceA] ntp-service reliable authentication-keyid 42
# View the NTP status of Device B after clock synchronization.
[DeviceB] display ntp-service status
Clock status: synchronized
Clock stratum: 3
Reference clock ID: 1.0.1.11
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: 1.05 ms
Peer dispersion: 7.81 ms
Reference time: 14:53:27.371 UTC Sep 19 2005 (C6D94F67.5EF9DB22)
As shown above, Device B has been synchronized to Device A, and the clock
stratum level of Device B is 3, while that of Device A is 2.
# View the NTP session information of Device B, which shows that an association
has been set up Device B and Device A.
[DeviceB] display ntp-service sessions
source reference
**************************************************************************
[12345] 1.0.1.11 127.127.1.0
note: 1 source(master),2 source(peer),3 selected,4 candidate,5 configured
Total associations :
Network requirements
Router C's local clock is to be used as a reference source, with the stratum level
■
of 3.
Router C works in the broadcast server mode, and Router C sends out
■
broadcast messages from Ethernet 1/0.
Router D works in the broadcast client mode and is to receives broadcast client
■
through Ethernet 1/0,
NTP authentication is enabled on both Router C and Router D.
■
stra reach poll now
2 63
1
NTP Configuration Examples
offset delay disper
64 3 -75.5 31.0
2071
16.5