Cisco ASR 903 Guide

Clocking
▀ PTP Configuration
▄ Cisco ASR 903 Router Design and Deployment Guide
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OL-30526-01
ASR903-R2 Configuration
interface Loopback10 ! use seperate interfaces for master and
slave
ip address 10.10.2.2 255.255.255.255
!
interface Loopback11
ip address 10.10.158.2 255.255.255.255
!
network-clock synchronization automatic
network-clock synchronization mode QL-enabled
network-clock input-source 10 ptp domain 0 ! specify PTP as clock source
!
ptp clock boundary domain 0
clock-port TPSlave slave
transport ipv4 unicast interface Lo10 negotiation
clock source 10.10.158.1
clock-port Master master
transport ipv4 unicast interface Lo11 negotiation
ASR903-R3 Configuration
ptp clock e2e-transparent domain 0
ASR903-R4 Configuration
interface Loopback10
ip address 10.10.4.4 255.255.255.255
!
network-clock synchronization automatic
network-clock synchronization mode QL-enabled
network-clock input-source 10 ptp domain 0
!
ptp clock ordinary domain 0
clock-port SLAVE slave
transport ipv4 unicast interface Lo10 negotiation
clock source 10.10.158.1 1 ! can select multiple sources, lower number
clock source 10.10.158.2 2 ! higher priority
Verifying PTP and Clock Synchronization
ASR903-R1# show ptp clock running domain 0
PTP Boundary Clock [Domain 0]
State Ports Pkts sent Pkts rcvd Redundancy Mode
PHASE_ALIGNED 2 424467 362306 Hot standby
PORT SUMMARY
PTP Master

Cisco ASR 903 Specifications

General

Form Factor	Modular
Storage Temperature	-40°C to 70°C (-40°F to 158°F)
Humidity	5% to 95% non-condensing
Redundancy	Yes, redundant power supplies and route processors
Operating System	Cisco IOS XE
Power Supply	AC or DC
Switching Capacity	240 Gbps
Operating Temperature	-40°C to 65°C (-40°F to 149°F)
MTBF	200, 000 hours
Supported Protocols	IPv4, IPv6, MPLS, L2VPN, L3VPN
Interfaces	Gigabit Ethernet, 10 Gigabit Ethernet, T1/E1