Specifications

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Cisco MWR 2941 Mobile Wireless Edge Router Release 3.5 Software Configuration Guide, Cisco IOS Release 15.1(3)MR
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Chapter 16 Configuring Clocking and Timing
Configuring Clocking and Timing
• 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 ptp 1pps
command. Use the input or output parameters to specify the direction and the pulse-width
parameter to specify the pulse width value.
Router(config)# ptp output 1pps pulse-width 2000 ms
Note The pulse-width parameter is only supported for PTP output.
• 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 Clocking Sample Configurations.
Configuring PTP Redundancy
The Cisco MWR 2941 supports PTP redundancy by allowing the Cisco MWR 2941 to act as a multicast
router for PTP traffic between an external PTP client and one or more multicast PTP master clocks.
Follow these steps to configure PTP redundancy on the Cisco MWR 2941.
Note Special IP routing protocols such as OSPF and IS-IS will be recognized based on protocol type and
forwarded to the PPC host. This a basic routing requirement for these protocols and is not related to PTP
redundancy.
Command Purpose
Step 1
enable
Example:
Router> enable
Enables privileged EXEC mode.
• Enter your password if prompted.
Step 2
configure terminal
Example:
Router# configure terminal
Enters global configuration mode.
Step 3
Router(config)# ip
multicast-routing
Enables multicast routing.