Configuring The Slave Clock Interface - Cisco ASR 1000 Series Software Configuration Manual

Configuring the Circuit Emulation over Packet Shared Port Adapter
Command or Action
Step 3
Router(config-if-cem)# xconnect
peer-router-id vcid encapsulation
mpls
Step 4 Router(config-if-cem-xconn)# end
What to Do Next
Note 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.

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
Note
as the master clock in the preceding section.
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
OL-14127-17
Purpose
Configures an out-of-band channel (pseudowire) to carry the master clock signal.
• 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.
Note
Exits CEM interface configuration mode and returns you to privileged EXEC
mode.
Cisco ASR 1000 Series Aggregation Services Routers SIP and SPA Software Configuration Guide, Cisco IOS XE
Use the same vcid for the master and slave clock pseudowires;
otherwise, the clock channel does not come up.
Configuring Out-of-Band Clocking
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