H3C Technologies H3C S7500E Series Switches - Manual (Page 94)

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Total associations : 1
Configuring MPLS VPN Time Synchronization in Client/server Mode
Network requirements
As shown in Figure 3-13 , 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 CE 1 and CE 3 in VPN 1, perform
the following configurations:
z CE 1’s local clock is to be used as a reference source, with the stratum level of 1.
z CE 3 is synchronized to CE 1 in the client/server mode.
At present, MPLS VPN 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 3-13 Network diagram for MPLS VPN time synchronization configuration
CE 1
CE 2 CE 4
CE 3
PE 1 PE 2 P
VPN 1
VPN 2
VPN 1
VPN 2
Vlan-int 10
Vlan-int 10
MPLS backbone
Vlan-int 20
Vlan-int 20
Vlan-int 30
Vlan-int 30
Vlan-int 40
Vlan-int 40
Vlan-int 50
Vlan-int 50
Vlan-int 60
Vlan-int 60
Device Interface IP address Device Interface IP address
CE 1 Vlan-int 10 10.1.1.1/24 PE 1 Vlan-int 10 10.1.1.2/24
CE 2 Vlan-int 20 10.2.1.1/24 Vlan-int 30 172.1.1.1/24
CE 3 Vlan-int 50 10.3.1.1/24 Vlan-int 20 10.2.1.2/24
CE 4 Vlan-int 60 10.4.1.1/24 PE 2 Vlan-int 50 10.3.1.2/24
P Vlan-int 30 172.1.1.2/24 Vlan-int 40 172.2.1.2/24
Vlan-int 40 172.2.1.1/24 Vlan-int 60 10.4.1.2/24