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Cisco ASR 1000 Series Aggregation Services Routers SIP and SPA Software Configuration Guide
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Chapter 10 Configuring the Ethernet SPAs
Using show Commands to Check SFP Module and XFP Module Status
Configuring the Network Clock in Interface Configuration Mode
Use the following commands in the interface configuration mode to configure the network clock and
timers on the Cisco ASR 1000 Series Router SIP-40.
Command Purpose
Router(config-if)#synchronous mode Configures the ethernet interface to synchronous mode
and this automatically enables the ESMC and Quality
Level process on the interface.
Note This command is applicable to Synchronous
Ethernet capable interfaces. The default value is
asynchronous mode.
Router(config-if)#esmc mode [tx | rx |<cr>]
Example:
Router(config-if)#esmc mode tx
Enables or disables ESMC process on the interface.
Note If the interface is configured as line source but
does not receive ESMC message from peer node
on the interface, then the interface is removed
from selectable clock source list. By default this
is enabled for synchronous mode and disabled
for asynchronous mode.
Note This command is not supported for
non-synchronous ethernet interfaces.
Router(config-if)#network-clock source
quality-level <value> {tx | rx}
Example:
Router(config-if)#network-clock source
quality-level QL-PRC
The command forces QL value to local clock selection
process and it is considered by the clock selection
process as a value from network. The value is based on
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
Note This command is applicable to Synchronous
Ethernet capable interfaces.
Router(config-if)#network-clock hold-off
<0 | 50-10000>
Example:
Router(config-if)#network-clock
hold-off 1000
Configures hold-off timer for interface. The default
value is 300 milliseconds.
Note Displays a warning for values below 300 ms and
above 1800 ms.