Filter
Top Products
22-46
Cisco ASR 901 Series Aggregation Services Router Software Configuration Guide
OL-23826-09
Chapter 22 Configuring Clocking
Configuring PTP for the Cisco ASR 901 Router
SESSION INFORMATION
SLAVE [Lo40] [Sessions 1]
Peer addr Pkts in Pkts out In Errs Out Errs
4.4.4.3 60023902 20011138 0 0
Setting the TimeProperties
The timeProperties dataset members (except timeTraceable and frequencyTraceable) can be individually
set by using the time-properties command.
Caution The time-properties command does not perform any input validation; use this command with caution.
The following is an example of the time-properties command:
Router(config-ptp-clk)# time-properties atomic-clock timeScaleTRUE
currentUtcOffsetValidTRUE leap59TRUE leap61FALSE 34
slave#show ptp clock dataset time-properties
CLOCK [Ordinary Clock, domain 0]
Current UTC Offset Valid: TRUE
Current UTC Offset: 34
Leap 59: TRUE
Leap 61: FALSE
Time Traceable: TRUE
Frequency Traceable: TRUE
PTP Timescale: TRUE
Time Source: Atomic
The values of Time Traceable and Frequency Traceable are determined dynamically.
ASR901 Negotiation Mechanism
The Cisco ASR 901 router supports a maximum of 36 slaves, when configured as a negotiated 1588V2
master. For a slave to successfully negotiate with the Cisco ASR 901 master, it should request sync and
announce packet rates that are not greater than the sync and announce rate that are currently set in the
master.
For example, if the sync interval on the master is -5 (32 packets/second), and if the slave tries to negotiate
a value of sync interval value of -6 (64 packets/second), the negotiation fails.
Static Unicast Mode
A clock destination can be added when the master is configured in the static unicast mode (by
configuring the transport without the negotiation flag). The master does not communicate with any other
slave, in this configuration.
Router(config-ptp-port)#clock destination 9.9.9.10