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
OL-26895-01
Chapter 16 Configuring Clocking and Timing
Configuring Clocking and Timing
Router(config-if)# ptp announce interval 0
Router(config-if)# ptp sync interval -6
Router(config-if)# ptp delay-req interval -4
Router(config-if)# ptp slave multicast
Router(config-if)# ptp enable
• PTP multicast slave mode (with hybrid clocking)—Sets the Cisco MWR 2941 to receive phase from
a PTP master device in multicast mode while using clock frequency obtained from the synchronous
Ethernet port.
Router(config)# interface Vlan10
Router(config-if)# ip address 192.168.52.38 255.255.255.0
Router(config-if)# ip igmp join-group 224.0.1.129
Router(config-if)# ptp announce interval 0
Router(config-if)# ptp sync interval -6
Router(config-if)# ptp delay-req interval -4
Router(config-if)# ptp slave multicast hybrid
Router(config-if)# ptp enable
Note You can use the ptp delay-req unicast command to set the Cisco MWR 2941 to send unicast PTP
Delay_Req messages while in multicast mode in order to eliminate unnecessary multicast traffic. For
more information about this command, see the Cisco MWR 2941 Mobile Wireless Edge Router IOS
Command Reference, Release 15.0(1)MR.
• PTP unicast master mode—Sets the Cisco MWR 2941 to act as the master PTP clock. Unicast
specifies that the router sends PTP messages to a single slave host.
Router(config)# interface Vlan2
Router(config-if)# ip address 192.168.52.38 255.255.255.0
Router(config-if)# ptp announce interval 0
Router(config-if)# ptp sync interval -6
Router(config-if)# ptp delay-req interval -4
Router(config-if)# ptp master unicast
Router(config-if)# ptp clock-destination 192.168.52.201
Router(config-if)# ptp enable
• PTP unicast master mode (with negotiation enabled)—Sets the Cisco MWR 2941 to send clocking
to a single PTP slave device; the router allows the slave devices to negotiate their master clock
device. When in the router is in PTP unicast master mode, you can specify up to 128 PTP clock
destination devices.
Note If you set the router to PTP master unicast mode with negotiation, you do not specify PTP clock
destinations because the router negotiates to determine the IP addresses of the PTP slave devices.
Note We recommend that you determine the number of destination devices to assign to a master clock based
on traffic rates and available bandwidth.
Router(config)# interface Vlan2
Router(config-if)# ip address 192.168.52.38 255.255.255.0
Router(config-if)# ptp announce interval 0
Router(config-if)# ptp sync interval -6
Router(config-if)# ptp delay-req interval -4
Router(config-if)# ptp master unicast negotiation
Router(config-if)# ptp enable