Users Guide

Default Disabled
Command Mode INTERFACE CONFIGURATION
Security and
Access
Netadmin and sysadmin
Usage
Information
Ensure to enable SyncE on the interfaces for ESMC to work on the interfaces. When ESMC capability
is disabled, it indicates that the interface is not going to receive or transmit QL. In that case, QL of
the interface can be configured using the sync-e quality-level command. The no form of this
command removes the configuration.
Example
OS10(config)# interface ethernet 1/1/1
OS10(conf-if-eth1/1/1)# sync-e esmc rx
Supported
Releases
10.5.2.1 or later
sync-e hold-off-time
Configures hold-off time interval.
Syntax
[no] sync-e hold-off-time milliseconds
Parameters milliseconds—Enter the hold-off time interval in milliseconds, from 300 to 1800.
Default 300
Command Mode
● CONFIGURATION
● INTERFACE CONFIGURATION
Security and
Access
Netadmin and sysadmin
Usage
Information
This command enables hold-off time for the SyncE interfaces. The hold-off-time is the time period for
which the switch waits before removing the clock source from the clock selection process when it goes
down. The clock selection process is triggered after the hold-off time to select the new synchronization
clock source. The switch might be in holdover state during the reference switch from one clock source
to another. In QL-disabled mode, signal fail is sent to the selection process after the hold-off time. In
QL-enabled mode, QL value of QL-FAILED signal is sent to the selection process after the hold-off time.
In the meantime, previous QL value is passed to selection process. QL values other than QL-FAILED is
passed to selection process immediately. The interface level hold-off-time value takes precedence over
the global hold-off-time value. The no form of this command removes the configuration.
Example - Global
level
OS10(config)# sync-e hold-off-time 400
Example -
Interface level
OS10(config)# interface ethernet 1/1/1
OS10(conf-if-eth1/1/1)# sync-e hold-off-time 500
Supported
Releases
10.5.2.1 or later
sync-e lockout
Locks out clock source on an interface for the selection process.
Syntax
sync-e lockout [ethernet node/slot/port]
Parameters ethernet node/slot/port—(Optional) Enter a physical Ethernet interface.
Default None
Command Mode EXEC
254 System management