Cisco ASR 1000 Series, Руководство по настройке программного обеспечения, Страница: 574 / 602

DETAILED STEPS
Purpose Command or Action
Specifies the slot and subslot of the CEM SPA from which the master clock
is recovered. Router(config)# recovered-clock
slot / subslot
Step 1
Creates a virtual CEM interface to represent the clock slave for out-of-band
clocking. Router(config-clock)# clock slave Step 2
Exits from the Clock configuration mode and enters the global configuration
mode. Router(config)#
exit
Step 3
Enters configuration mode for the virtual CEM interface that represents the
clock slave. Router(config)# int virtual-cem
slot / subslot / port
Step 4
• slot / subslot is the slot and subslot of the SPA from which the master
clock was recovered (Step 1 above).
• port is always 24.
Creates a CEM attachment circuit for the clock slave. The circuit-id value
can be:
Router(config-if)# cem circuit-id
Step 5
•
0
—
The primary clock source.
•
1
—
The secondary clock source.
You can configure up to two CEM circuits, one for each of two master
clock signals. Note
Configures an out-of-band channel (pseudowire) to carry the clock signal. Router(config-if-cem)#
xconnect
peer-router-id vcid encapsulation
mpls
Step 6
• peer-router-id is the IP address of the router that is connected to the
source 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 7
Verifying Out-of-Band Clocking
This section lists the show commands that you can use to verify the out-of-band clocking configuration.
Cisco ASR 1000 Series Aggregation Services Routers SIP and SPA Software Configuration Guide, Cisco IOS
XE Everest 16.5
528 OL-14127-17
Configuring the Circuit Emulation over Packet Shared Port Adapter
Configuring Out-of-Band Clocking