48
source reference stra reach poll now offset delay disper
********************************************************************************
[1245]3.0.1.31 127.127.1.0 3 3 64 68 -0.0 0.0000 0.0
Notes: 1 source(master),2 source(peer),3 selected,4 candidate,5 configured.
Total sessions : 1
The output shows that an association has been set up between Switch B and Switch C.
Configuration example for MPLS VPN time
synchronization in client/server mode
Network requirements
As shown in
, two VPNs are present on PE 1 and PE 2: VPN 1 and VPN 2. CE 1 and CE 3 are
devices in VPN 1.
To synchronize the time between PE 2 and CE 1 in VPN 1, do the following:
•
Configure CE 1's local clock as a reference source, with the stratum level 2.
•
Configure PE 1 to operate in client/server mode.
•
Specify VPN 1 as the target VPN.
Figure 18
Network diagram
Configuration procedure
Before you perform 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. For information about configuring MPLS VPN, see
MPLS Configuration Guide
.
1.
Set the IP address for each interface as shown in
. (Details not shown.)
2.
Configure CE 1:
# Enable the NTP service.
<CE1> system-view
[CE1] ntp-service enable
CE 1
NTP server
CE 2
CE 4
CE 3
PE 1
PE 2
NTP client
P
VPN 1
VPN 2
VPN 1
VPN 2
10.1.1.1/24
10.3.1.1/24
10.3.1.2/24
MPLS backbone
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