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 You can only configure one VLAN interface for PTP.
• PTP unicast slave mode (with hybrid clocking)—Sets the Cisco MWR 2941 to receive phase (ToD
or 1PPS) from a single PTP master device while using clock frequency obtained from the
synchronous Ethernet port.
Router(config)# interface Vlan2
Router(config-if)# ip address 192.168.52.38 255.255.255.0
Router(config-if)# ptp announce interval 3
Router(config-if)# ptp announce timeout 2
Router(config-if)# ptp sync interval -6
Router(config-if)# ptp delay-req interval -4
Router(config-if)# ptp slave unicast negotiation hybrid
Router(config-if)# ptp clock-source 192.168.52.10
Router(config-if)# ptp enable
• PTP unicast slave mode (with hot standby master clock)—Sets the Cisco MWR 2941 to receive
clocking from a single PTP master device and enables a standby master clock. When you enable a
standby master clock, the Cisco MWR 2941 selects the best clock source between two PTP master
clocks and switches dynamically between them if the clock quality of the standby clock is greater
than that of the current master clock. If you define a standby master clock, both clock sources must
be in the same VLAN. Setting a standby master clock in unicast mode is optional.
Router(config)# interface Vlan2
Router(config-if)# ip address 192.168.52.38 255.255.255.0
Router(config-if)# ptp announce interval 3
Router(config-if)# ptp announce timeout 2
Router(config-if)# ptp sync interval -6
Router(config-if)# ptp delay-req interval -4
Router(config-if)# ptp slave unicast negotiation hybrid
Router(config-if)# ptp clock-source 192.168.52.10
Router(config-if)# ptp clock-source 192.168.52.150
Router(config-if)# ptp enable
Configure the Global Network Clock
Use the network-clock-select command to configure clock selection for the entire network.
• If you configured the router for PTP master mode, set one or more external clock sources using the
network-clock-select command with the synchronous ethernet, bits, E1, T1, or SHDSL interface
parameters:
Router(config)# network-clock-select 1 BITS
Router(config)# network-clock-select 2 SYNC 0
Router(config)# network-clock-select 3 E1 0/0
Router(config)# network-clock-select 4 SHDSL 1/0.1
Note For SHDSL connections, the subinterface number represents the wire that the Cisco MWR 2941 uses to
receive clocking.
• If you configured the router for PTP slave mode, enter the following commands:
Router(config)# network-clock-select 1 PACKET-TIMING
Router(config)# network-clock-select hold-timeout 900