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Table Of Contents
Switch B configuration
1. Enable SyncE on the switch.
SwitchB: configure terminal
SwitchB(config)# sync-e enable
2. Set the SyncE mode to QL-enabled.
SwitchB(config)# sync-e mode ql-enabled
3. Configure the synchronization network. The default value is 1, and it is a synchronization network that is designed for
Europe.
SwitchB(config)# sync-e ssm-network-option 1
4. Enable SyncE on the interfaces that are connected to the clock sources and interfaces transmitting to the neighboring
SyncE node.
SwitchB(config)# interface ethernet 1/1/1
SwitchB(conf-if-eth1/1/1)# sync-e enable
5. Enable the ESMC mode on the interfaces that are connected to the clock sources and interfaces transmitting ESMC to the
neighboring SyncE nodes.
SwitchB(config)# interface ethernet 1/1/1
SwitchB(conf-if-eth1/1/1)# sync-e esmc rx-tx
6. Verify the SyncE configuration.
SwitchB# show sync-e
QL Mode : QL-Enabled
Lock Status : Locked
Selected QL for Tx : QL-PRC
Selection Process State : State 1A(QL-enabled and no active switch request)
Primary Reference Interface : Ethernet 1/1/1
Secondary Reference Interface : -
Selected Reference Clock Identity : 11:11:11:ff:fe:11:11:01
Local Clock Identity : 22:22:22:ff:fe:22:22:01
SSM Network Option : Option 1
Hold-off Time : 300 no
Wait-To-Restore Time : 300 secs
SyncE Interfaces
-----------------------------------------------------------------
Interface Priority QL Signal State Status
State
-----------------------------------------------------------------
Ethl/1/1 128 QL-PRC Up Available Primary
-----------------------------------------------------------------
Example - SyncE QL-disabled mode
In this example, SyncE is configured in the QL-disabled mode. In SyncE QL-disabled mode, QL value is not used for clock
selection. To select any specific synchronization clock source, you can configure interface-level priority. If the interface-level
priority is not configured, an arbitrary reference source from the available valid clock sources is selected.
Switch A is synchronized to the input clock source, SRC2 based on priority configured on Ethernet interface 1/1/2. This
synchronized clock frequency is used for further transmission from Ethernet interface 1/1/3 to Switch B, which also gets
synchronized to the trail of clock source, SRC2.
Switch A configuration
1. Enable SyncE on the switch.
SwitchA: configure terminal
SwitchA(config)# sync-e enable
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System management