Purpose
Command
Specifies the QL value for line or external timing
input or output. The value is based on a global
interworking Option.
•
If Option 1 is configured, the available values
are QL-PRC, QL-SSU-A, QL-SSU-B, QL-SEC,
and QL-DNU.
•
If Option 2 is configured with GEN 2, the
available values are QL-PRS, QL-STU,
QL-ST2, QL-TNC, QL-ST3, QL-SMC, QL-ST4
and QL-DUS.
•
If option 2 is configured with GEN1, the
available values are QL-PRS, QL-STU,
QL-ST2, QL-SMC, QL-ST4 and QL-DUS
This command is not supported for
synchronous ethernet interfaces.
Note
Router(config)# network-clock quality-level {tx |
rx} <value> {interface <interface name>
<slot/card/port> | external <slot/card/port> |
controller <slot/card/port>}
Example:
Router(config)#
network-clock quality-level
rx
QL-PRC
external
4/0/0
e1
crc4
Transmits the line clock sources to external timing
output interfaces.
A line can be configured to be the output
source for only one external interface.
Note
This command provides the station clock output as
per G.781. We recommend that you use the interface
level command instead of global commands. Global
command should preferably be used for interfaces
that do not have an interface sub mode. For more
information on configuring network clock in interface
level mode, see
Configuring the Network Clock in
Interface Configuration Mode , on page 139
.
Router(config)# network-clock output-source line
<priority> {interface <interface_name> | controller
{t1 | e1} <slot/card/port>} {external
<slot/card/port> [t1 {sf | efs | d4} | e1 [crc4| fas| cas
[crc4] | 2m | 10m] }
Example:
Router(config)#
network-clock output-source
line
1
interface
GigabitEthernet3/0/0
Allows transmitting the system clock to external
timing output interfaces.
This command provides station clock output as per
G.781. We recommend that you use the interface level
command instead of global commands. Global
command should preferably be used for interfaces
that do not have an interface sub mode. For more
information on configuring network clock in interface
level mode, see
Configuring the Network Clock in
Interface Configuration Mode , on page 139
.
Router(config)# network-clock output-source
system <priority> {external <slot/card/port> [t1
{sf | efs | d4} | e1 [crc4| fas| cas [crc4] | 2m | 10m] }
Example:
Router(config)#
network-clock output-source
system
55
external
3/0/1 t1 efs
Enables or disables a slot from participating in
network-clock algorithm.
By default all slots are participating slots.
A slot cannot be disabled from participation
if it's primary source, secondary source, or
system to external is valid.
Note
Router(config)# [no] network-clock
synchronization participate <slot number>
Example:
Router(config)#
[no] network-clock
synchronization participate
2
Cisco ASR 1000 Series Aggregation Services Routers SIP and SPA Software Configuration Guide, Cisco IOS
XE Everest 16.5
138
OL-14127-17
Configuring the Ethernet SPAs
Configuring the Network Clock for the 2-Port Gigabit Synchronous Ethernet SPA on a Cisco ASR 1000 Series Router