6-7
Cisco ME 3800X and 3600X Switch Software Configuration Guide
OL-23400-01
Chapter 6 Configuring Synchronous Ethernet
Configuring SyncE
Enter the no network-clock-select priority or network-clock-select output to remove the selected
priority. Enter the no network-clock-select mode revert or the no network-clock-select mode
nonrevert to select the other mode.
This example configures the BITS clock with a priority of 2 and the SyncE input port as 10 Gigabit
Ethernet port 0/1 with the switching mode as nonrevertive.
Switch (config)#
network-clock-select priority 2 BITS
Switch (config)#
network-clock-select output 2 SYNCE 0
Switch (config)#
network-clock-select mode nonrevert
Switch (config)#
end
Configuring the BITS Interface
Beginning in privileged EXEC mode, follow these steps to configure the BITS interface. The Ethernet
Equipment Clock (EEC) mode of operation is based on the area of deployment.
Step 4
network-clock-select mode {nonrevert | revert}
(Optional) Configure the reference switching mode to
determine the action to be taken if an input clock with a
higher priority than the selected reference becomes valid.
•
nonrevert—The new clock does not immediately
become valid but is selected only if the current
reference becomes invalid.
•
revert— The higher priority reference is
immediately selected as the reference clock. This is
the default.
Step 5
end
Return to privileged EXEC mode.
Step 6
show network-clocks
Verify the configuration.
Step 7
copy running-config startup config
(Optional) Save your entries in the switch startup
configuration file.
Command
Purpose
Command
Purpose
Step 1
configure terminal
Enter global configuration mode.
Step 2
network-clock-select option {option1 | option2}
Configure the EEC option.:
•
option1—Select E1 as the input clock rate.
•
option2—Select T1 as the input clock rate
