Clock Monitoring Module Configuration Example - H3C S9500 Series Operation Manual

Operation Manual – Clock Monitoring
H3C S9500 Series Routing Switches

1.9 Clock Monitoring Module Configuration Example

I. Network requirements
Two S9508 switches Switch A and Switch B are connected through their POS
interfaces. They are equipped with the clock monitoring modules on their SRPUs,
and thus you can configure the synchronization clock parameters.
The synchronization clock of Switch A is provided by its clock monitoring module.
Switch B adopts the line clock from Switch A to synchronize with the SDH line of
Switch A.
II. Network diagram
Figure 1-2 Network diagram of system clock configuration
III. Configuration procedure
1) Configure Switch A (Master clock).
# Set the interface POS 1/1/1 to work in master clock mode, using local clock signals.
<Sysname> system-view
[Sysname] interface pos 1/1/1
[Sysname-Pos1/1/1] clock master
2) Configure Switch B (Slave clock).
# Set the LPU port on Switch B to POS 1/1/1.
<Sysname> system-view
[Sysname] clock lpuport pos 1/1/1
# Set the interface POS 1/1/1 to work in slave clock mode.
[Sysname] interface pos 1/1/1
[Sysname-Pos1/1/1] clock slave
# Enable the clock source obtained from POS 1/1/1; set the clock to work in manual
mode and use clock source 8 as the primary clock source, which corresponds to slot 1
(refer to
[Sysname] clock manual source 8
Through the above configurations, all the other POS interface cards get the same clock
frequency derived by the clock module from the line clock of POS 1/1/1. In this way, all
the service cards of the switch can get precise, reliable, synchronized SDH line
interface.
Figure 1-1).
Chapter 1 Clock Monitoring Configuration
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