H3C Technologies H3C MSR 50 - Manual (Page 66)

Clock stratum: 4
Reference clock ID: 3.0.1.31
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: 8.31 ms
Peer dispersion: 34.30 ms
Reference time: 16:01:51.713 UTC Sep 19 2005 (C6D95F6F.B6872B02)
Configuration example for MPLS VPN time synchronization in
client/server mode
Network requirements
As shown in Figure 23 , 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, configure CE 1’s local clock
as a reference source, with the stratum level 1, configure CE 1 to operate in client/server mode, and
specify VPN 1 as the target VPN.
MPLS L3VPN time synchronization can be implemented only in the unicast mode (client/server mode or
symmetric peers mode), but not in the multicast or broadcast mode.
Figure 23 Network diagram
Device Interface IP address Device Interface IP address
CE 1 S2/0 10.1.1.1/24 PE 1 S2/0 10.1.1.2/24
CE 2 S2/0 10.2.1.1/24 S2/1 172.1.1.1/24
CE 3 S2/0 10.3.1.1/24 S2/2 10.2.1.2/24
CE 4 S2/0 10.4.1.1/24 PE 2 S2/0 10.3.1.2/24
P S2/0 172.1.1.2/24 S2/1 172.2.1.2/24
S2/1 172.2.1.1/24 S2/2 10.4.1.2/24
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