4-4
Cisco ME-3600X-24CX Series Switch Chassis Configuration Guide
OL-27620-01
Chapter 4 Configuring Clocking and Timing
Configuring Clocking and Timing
Prerequisites for Configuring PTP Clocking
To enable PTP v2 Ordinary Slave Clock, one of the following base licenses must be installed on the
switch:
•
Metro IP Access
•
Advanced Metro IP Access
An additional 1588 feature license is required to enable the Ordinary master clock and boundary clock
functionality.
You must reload the switch to activate the license.
Configuring an Ordinary Clock
The followign sections describe how to cofigure the switch as an ordinary clock.
•
Configuring a Master Ordinary Clock, page 4-4
•
Configuring a Slave Ordinary Clock, page 4-6
Configuring a Master Ordinary Clock
Enter the following commands to configure the switch to act as a master ordinary clock:
Command
Purpose
Step 1
enable
Example:
Switch> enable
Enables privileged EXEC mode.
•
Enter your password if prompted.
Step 2
configure terminal
Example:
Switch# configure terminal
Enters global configuration mode.
Step 3
ptp clock {ordinary | boundary |
e2e-transparent} domain
domain-number [hybrid]
Example:
Switch(config)# ptp clock ordinary
domain 0
Configures the PTP clock. You can create the following clock types:
•Ordinary—A 1588 clock with a single PTP port that can operate in
Master or Slave mode.
•Boundary—Participates in selecting the best master clock and can act as
the master clock if no better clocks are detected.
Note
Hybrid mode is not supported on the Cisco ME 3600X 24CX
switch.
Step 4
priority1 priorityvalue
Example:
Switch(config-ptp-clk)# priority1
128
Sets the preference level for a clock. Slave devices use the priority1 value
when selecting a master clock: a lower priority1 value indicates a
preferred clock. The priority1 value is considered above all other clock
attributes.
Valid values are from 0-255. The default value is 128.
