Cisco ASR 1000 Series

PurposeCommand or Action
Configures an out-of-band channel (pseudowire) to carry the master clock signal.Router(config-if-cem)# xconnect
peer-router-id vcid encapsulation
mpls
Step 3
•
peer-router-id is the IP address of the router that is connected to the
destination TDM device.
•
vcid is a 32-bit identifier for the pseudowire.
•
encapsulation mpls sets MPLS for the tunneling mode.
Use the same vcid for the master and slave clock pseudowires;
otherwise, the clock channel does not come up.
Note
Exits CEM interface configuration mode and returns you to privileged EXEC
mode.
Router(config-if-cem-xconn)# end
Step 4
What to Do Next
A CEM SPA cannot be configured as both master and slave at the same time. To reconfigure a SPA’s
clock type, you must first remove the existing clock configuration.
Note
Configuring the Slave Clock Interface
To configure the slave clock interface and out-of-band channel to use for out-of-band clocking, perform the
following steps.
Configure a slave clock interface on every CEM SPA that receives TDM data from the SPA configured
as the master clock in the preceding section.
Note
SUMMARY STEPS
1.
Router(config)# recovered-clock slot/subslot
2.
Router(config-clock)# clock slave
3.
Router(config)# exit
4.
Router(config)# int virtual-cem slot/subslot/port
5.
Router(config-if)# cem circuit-id
6.
Router(config-if-cem)# xconnect peer-router-id vcid encapsulation mpls
7.
Router(config-if-cem-xconn)# end
Cisco ASR 1000 Series Aggregation Services Routers SIP and SPA Software Configuration Guide, Cisco IOS XE
Everest 16.5
OL-14127-17 527
Configuring the Circuit Emulation over Packet Shared Port Adapter
Configuring Out-of-Band Clocking