Specifications

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Cisco MWR 2941 Mobile Wireless Edge Router Software Configuration Guide, Release 12.2(33)MRB
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Chapter 4 Configuring the Cisco MWR 2941 Router Using the CLI
Configuration Sequence
Note The network-clock-select hold-timeout command is optional; the minimum recommended value in the
slave mode is 900 seconds (15 minutes). For more information about this command, see Appendix B,
“Cisco MWR 2941 Router Command Reference.”
Configuring PTP Input and Output
The following section describes how to configure time of day messages, output clocking, and input
clocking. You can use the 1pps and 10Mhz timing ports on the Cisco MWR 2941-DC-A to do the
following:
• Provide or receive 1PPS time of day messages
• Provide output clocking at 10Mhz, 2.048Mhz, and 1.544Mhz
• Receive input clocking at 10Mhz, 2.048Mhz, and 1.544Mhz
Note This section applies only to the Cisco MWR 2941-DC-A.
Follow these steps to configure PTP input and output:
• If you want to configure PTP input clocking using the 10Mhz timing port, complete the following
steps:
– Use the ptp input command to enable PTP input clocking at 10Mhz, 2.048Mhz, or 1.544Mhz.
Router(config)# ptp input 10M
– Use the network-clock-select command to select the port to use for input clocking.
Router(config)# network-clock-select 10 10M
Input clocking applies when the router is in PTP master mode.
• To configure output clocking using the 10Mhz timing port, use the ptp output command to specify
10Mhz, 2.048Mhz, or 1.544Mhz output. Use this command when the router is in PTP slave mode.
Router(config)# ptp output 2.048M
• To configure the router to send time of day messages using the 1PPS port, use the 1pps option with
the ptp input or ptp output commands. Use the pulse-width parameter to specify the pulse width
value. You can also use the 1pps rs422 to specify PTP input using the RS-422 port.
Router(config)# ptp input 1pps pulse-width 1000 ns
Router(config)# ptp output 1pps pulse-width 2000 ms
• To configure the time of day message format, use the ptp tod command.
Router(config)# ptp tod ubx delay 400
• To configure the router to periodically update the system calendar with PTP clock time, use the ptp
update-calendar command.
Rounter(config)# ptp update-calendar
Note To see configuration examples for input and output timing, see PTP Sample Configurations, page A-38.