Configuring Network Clocking With Ncdp - Cisco Catalyst 8540 MSR Configuration Manual

Chapter 3 Initially Configuring the ATM Switch Router
The following example shows the switch clock source configuration with the network clock module
installed:
Switch# show network-clocks
Network clocking information:
---------------------------------------
Source switchover mode:
Netclkd state:
Source selection method:
NCLKM hardware status:
NCLKM status:
Primary
Secondary clock source:
Present
The following example shows the clock source configuration stored in the running configuration:
Switch# more system:running-config
!
<information deleted>
!
network-clock-select revertive
network-clock-select 1 ATM0/0/0
<information deleted>

Configuring Network Clocking with NCDP

The Network Clock Distribution Protocol (NCDP) provides a means by which a network can
synchronize automatically to a primary reference source (PRS). To do so, NCDP constructs and
maintains a spanning network clock distribution tree. This tree structure is superimposed on the network
nodes by the software, resulting in an efficient, synchronized network suitable for transport of traffic
with inherent synchronization requirements, such as voice and video.
The following sections provide instructions for configuring NCDP. For a description of how NCDP
works, refer to the Guide to ATM Technology.
The NCDP is intended for use on ATM switch routers equipped with FC-PFQ or with the network clock
Note
module.
OL-7396-01
revertive
Active
provisioned
installed & usable
software enabled
clock source: ATM0/0/0
not configured
clock source: NCLKM Stratum 3 osc (0)
Configuring Network Clocking
ATM Switch Router Software Configuration Guide
3-13