H3C S9500 Series Operation Manual
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H3C S9500 Series Operation Manual

H3C S9500 Series Operation Manual

Routing switches
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Download this manual See also: Command Manual, Operating Manual
Operation Manual - Clock Monitoring
H3C S9500 Series Routing Switches
Chapter 1 Clock Monitoring Configuration................................................................................. 1-1
1.1 Clock Monitoring Module Overview ................................................................................... 1-1
1.1.1 Introduction to Clock Monitoring Module................................................................. 1-1
1.1.2 Classification of Clock Sources............................................................................... 1-2
1.1.3 Reference Source Level.......................................................................................... 1-2
1.1.5 Working Mode of the Port Clock ............................................................................. 1-3
1.2 Clock Monitoring Module Configuration Task List ............................................................. 1-4
1.4 Configuring Reference Source Priority .............................................................................. 1-5
1.5 Configuring SSM for Reference Sources .......................................................................... 1-5
1.5.1 Setting the Way of Deriving SSM Level .................................................................. 1-5
1.5.3 Configuring SSM Levels for the Reference Source ................................................ 1-6
1.5.4 Activating/Deactivating SSM ................................................................................... 1-7
1.6 Stopping the Clock Monitoring Module from Warming Up ................................................ 1-7
1.7 Setting the Input Port of the Line Clock (LPU Port) ........................................................... 1-7
1.8 Displaying and Maintaining Clock Monitoring Module ....................................................... 1-8
1.9 Clock Monitoring Module Configuration Example.............................................................. 1-9

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  • Page 1: Table Of Contents

    Operation Manual – Clock Monitoring H3C S9500 Series Routing Switches Table of Contents Table of Contents Chapter 1 Clock Monitoring Configuration................. 1-1 1.1 Clock Monitoring Module Overview ................... 1-1 1.1.1 Introduction to Clock Monitoring Module..............1-1 1.1.2 Classification of Clock Sources................1-2 1.1.3 Reference Source Level..................

  • Page 2: Chapter 1 Clock Monitoring Configuration

    Bits clock sources and others are line clock sources. Each reference source corresponds to a slot. The specific relationship is decided by device hardware. The following figure shows the reference-slot relationship of the S9500 series switches:...

  • Page 3: Classification Of Clock Sources

    Operation Manual – Clock Monitoring H3C S9500 Series Routing Switches Chapter 1 Clock Monitoring Configuration S9502 S9502 S9505 S9505 S9508 S9508 S9512 S9512 Figure 1-1 Relationship between reference source and slot 1.1.2 Classification of Clock Sources Clock sources can be classified into three categories according to different sources of the clock source of the clock monitoring module: Local clock source: 38.88 MHz clock signals generated by a crystal oscillator...

  • Page 4: Working Mode Of The Clock Monitoring Module Of The Srpu

    Clock sources whose priority is 255. By default, the priority of all clock sources is 255. Clock sources whose SSM level is DNU (DoNotUse). 1.1.5 Working Mode of the Port Clock Depending on the source of the port clock, a port of an S9500 series switch supports two clock modes:...

  • Page 5: Clock Monitoring Module Configuration Task List

    1.2 Clock Monitoring Module Configuration Task List Note: The following configurations are applicable to the S9500 series Ethernet switches whose SRPU is installed with a clock module. For information about the SRPUs installed with a clock module, refer to Installation Manual.

  • Page 6: Configuring Working Mode Of The Clock Monitoring Module Of The Srpu

    Operation Manual – Clock Monitoring H3C S9500 Series Routing Switches Chapter 1 Clock Monitoring Configuration 1.3 Configuring Working Mode of the Clock Monitoring Module of the SRPU To do… Use the command… Remarks Enter system view system-view — Configure the work mode...

  • Page 7: Setting The Bit Position For Transmitting Bits Clock Source Information

    Operation Manual – Clock Monitoring H3C S9500 Series Routing Switches Chapter 1 Clock Monitoring Configuration 1.5.2 Setting the Bit Position for Transmitting Bits Clock Source Information The bits for transmitting Bits clock source information can be configured as sa4, sa5, sa6, sa7 and sa8.

  • Page 8: Activating/Deactivating Ssm

    Operation Manual – Clock Monitoring H3C S9500 Series Routing Switches Chapter 1 Clock Monitoring Configuration 1.5.4 Activating/Deactivating SSM No matter the SSM levels are obtained through clock signals or configured manually, you have to activate them before they can take effect.

  • Page 9: Displaying And Maintaining Clock Monitoring Module

    Operation Manual – Clock Monitoring H3C S9500 Series Routing Switches Chapter 1 Clock Monitoring Configuration Note: For a POS interface card, if you set the port clock to work in Slave mode, you must use the clock lpuport command to set the LPU port of the clock source of the interface card.

  • Page 10: Clock Monitoring Module Configuration Example

    Operation Manual – Clock Monitoring H3C S9500 Series Routing Switches Chapter 1 Clock Monitoring Configuration 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.

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