3Com MSR 50 Series Configuration Manual page 2074

2074 C 111: NTP C
HAPTER
n
ONFIGURATION
Network diagram
Figure 622 Network diagram for MPLS VPN time synchronization configuration
VPN 1
CE 1
S2/0
S2 /0
S2 /2
S2/0
CE 2
VPN 2
Device Interface
CE 1 S2/0
CE 2 S2/0
CE 3 S2/0
CE 4 S2/0
P S2/0
S2/1
Configuration procedure
Prior to performing the following configuration, be sure you have completed
MPLS VPN-related configurations and make sure of the reachability between CE 1
and PE 1, between PE 1 and PE 2, and between PE 2 and CE 3. Refer to
Basics Configuration" on page
1 Configuration on CE 1:
# Specify the local clock as the reference source, with the stratum level of 1.
<CE1> system-view
[CE1] ntp-service refclcok-master 1
2 Configuration on CE 3:
# Specify CE 1 in VPN 1 as the NTP server of CE 3.
<CE3> system-view
[CE3] ntp-service unicast-server 10.1.1.1
# View the NTP session information and status information on CE 3 a certain
period of time later. The information should show that CE 3 has been
synchronized to CE 1, with the clock stratum level of 2.
PE 1 P
S2 /1 S2 /0
MPLS backbone
IP address Device
10.1.1.1/24 PE 1
10.2.1.1/24
10.3.1.1/24
10.4.1.1/24 PE 2
172.1.1.2/24
172.2.1.1/24
1311.
S 2/0
PE 2
S2/0
S2 /1 S2/1
S2/2
S2/0
Interface
S2/0
S2/1
S2/2
S2/0
S2/1
S2/2
VPN 1
CE 3
CE 4
VPN 2
IP address
10.1.1.2/24
172.1.1.1/24
10.2.1.2/24
10.3.1.2/24
172.2.1.2/24
10.4.1.2/24
"MPLS