3Com MSR 50 Series, Руководство по настройке

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2064 C
HAPTER
111: NTP C
ONFIGURATION
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 between Device B and Device A.
[DeviceB] display ntp-service sessions
source reference stra reach poll now offset delay disper
**************************************************************************
[12345] 1.0.1.11 127.127.1.0 2 63 64 3 -75.5 31.0 16.5
note: 1 source(master),2 source(peer),3 selected,4 candidate,5 configured
Total associations : 1
Configuring the NTP
Symmetric Mode
Network requirements
■
The local clock of Device A is to be configured as a reference source, with the
stratum level of 2.
■
Device B works in the client mode and Device A is to be used as the NTP server
of Device B, with Device B as the client.
■
Device C works in the symmetric-active mode and Device B will act as peer of
Device C. Device C is the symmetric-active peer, while Device B is the
symmetric-passive peer.
Network diagram
Figure 617 Network diagram for NTP symmetric peers mode configuration
Configuration procedure
1
Configuration on Device A:
# Specify the local clock as the reference source, with the stratum level of 2.
<DeviceA> system-view
[DeviceA] ntp-service refclock-master 2
2
Configuration on Device B:
# Specify Device A as the NTP server of Device B.
<DeviceB> system-view
[DeviceB] ntp-service unicast-server 3.0.1.31
3
Configuration on Device C (after Device B is synchronized to Device A):
Device A
Device B Device C
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