Cisco Systems A9014CFD manual Verifying PTP Configuration on the 1588V2 Slave, 22-31

Chapter 22 Configuring Clocking

Configuring PTP for the Cisco ASR 901 Router

Current UTC Offset: 34

Leap 59: FALSE

Leap 61: FALSE

Time Traceable: FALSE

Frequency Traceable: FALSE

PTP Timescale: FALSE

Time Source: Internal Oscillator

Verifying PTP Configuration on the 1588V2 Slave

The following examples help you verify the PTP configuration on the1588V2 slave.

Note The loopback interface assigned to PTP does not respond to ICMP pings. To check route availability, either do it before assigning the interface to PTP, or remove PTP from the interface and then perform ICMP ping. For removing PTP, use no transport ipv4 unicast interface loopback interface command.

Note The bridge state indicates the extension of previously known state which can be ignored or considered to be normal. The clock state can get into holdover from bridge state when the packet delay variation is high on the received PTP packets or the PTP connection is lost. This holdover state indicates that the clock cannot be recovered from PTP packets as the quality is poor.

Example 1

Router# show ptp clock runn dom 0

	PTP Ordinary Clock [Domain 0]
State	Ports		Pkts sent		Pkts rcvd
ACQUIRING	1		5308		27185
		PORT SUMMARY
Name	Tx Mode	Role	Transport		State	Sessions
SLAVE	unicast	slave	Lo10		-	1
		SESSION INFORMATION
SLAVE [L010] [Sessions 1]
Peer addr	Pkts in	Pkts out	In Errs	Out Errs
3.3.3.3	27185	5308	0	0

Example 2

Router# show platform ptp state
flag = 2
FLL State	:	2 (Fast Loop)
FLL Status Duration	:	7049	(sec)
Forward Flow Weight	:	0.0
Forward Flow Transient-Free	:	900 (900 sec Window)
Forward Flow Transient-Free	:	3600	(3600 sec Window)
Forward Flow Transactions Used:		23.0	(%)
Forward Flow Oper. Min TDEV	:	4254.0 (nsec)
Cisco ASR 901 Series Aggregation Services Router Software Configuration Guide
OL-23826-09				22-31