3com S7906E 설치 설명서

 

1-29 

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PE 1’s local clock is to be used as a reference source, with the stratum level of 1. 

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PE 2 is synchronized to PE 1 in the symmetric peers mode. 

1)  Configuration on PE 1:  

# Specify the local clock as the reference source, with the stratum level of 1.  

<PE1> system-view 

[PE1] ntp-service refclcok-master 1 

2)  Configuration on PE 2:  

# Specify PE 1 in VPN 1 as the symmetric-passive peer of PE 2.  

<PE2> system-view 

[PE2] ntp-service unicast-peer vpn-instance vpn1 10.1.1.2 

# View the NTP session information and status information on PE 2 a certain period of time later. The 

information should show that PE 2 has been synchronized to PE 1, with the clock stratum level of 2.  

[PE2] display ntp-service status 

 Clock status: synchronized 

 Clock stratum: 2 

 Reference clock ID: 10.1.1.2 

 Nominal frequency: 99.9100 Hz  

 Actual frequency: 99.9100 Hz  

 Clock precision: 2^18 

 Clock offset: 0.0000 ms 

 Root delay: 32.00 ms 

 Root dispersion: 0.60 ms 

 Peer dispersion: 7.81 ms 

 Reference time: 02:44:01.200 UTC Jan 1 2001(BDFA6D71.33333333) 

[PE2] display ntp-service sessions 

source          reference       stra reach poll  now offset  delay disper 

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

[12345]10.1.1.2       LOCL          1    1   64   29    -12.0   32.0    15.6 

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

Total associations :  1      

[PE2] display ntp-service trace    

 server 127.0.0.1,stratum 2, offset -0.012000, synch distance 0.02448 

 server 10.1.1.2,stratum 1, offset 0.003500, synch distance 0.00781 

 refid 127.127.1.0