Chapter 22 Configuring Clocking

Configuring PTP for the Cisco ASR 901 Router

Forward Mafie

 

:

38.0

 

 

Forward Flow

Min Cluster Width:

7550.0 (nsec)

Forward Flow

Mode Width

:

21400.0 (nsec)

Reverse Flow

Weight

:

100.0

 

Reverse Flow

Transient-Free

:

900

(900 sec Window)

Reverse Flow

Transient-Free

:

3600 (3600 sec Window)

Reverse Flow

Transactions Used:

200.0

(%)

Reverse Flow

Oper. Min TDEV

:

487.0

(nsec)

Reverse Mafie

 

:

36.0

 

 

Reverse Flow

Min Cluster Width:

225.0

(nsec)

Reverse Flow

Mode Width

:

450.0

(nsec)

Frequency Correction

:

257.0

(ppb)

Phase Correction

:

0.0

(ppb)

Output TDEV Estimate

:

1057.0 (nsec)

Output MDEV Estimate

:

1.0

(ppb)

Residual Phase Error

:

0.0

(nsec)

Min. Roundtrip Delay

:

45.0 (nsec)

Sync Packet Rate

:

65 (pkts/sec)

Delay Packet

Rate

:

65 (pkts/sec)

Forward IPDV

% Below Threshold:

0.0

 

 

Forward Maximum IPDV

:

0.0

(usec)

Forward Interpacket Jitter

:

0.0

(usec)

Reverse IPDV

% Below Threshold:

0.0

 

 

Reverse Maximum IPDV

:

0.0

(usec)

Reverse Interpacket Jitter

:

0.0

(usec)

Verifying PTP Configuration on the 1588V2 Master

A typical configuration on a 1588V2 master is:

ptp clock ordinary domain 0 tod 0/0 cisco

input 1pps 0/0 clock-port MASTER master

transport ipv4 unicast interface Lo20 negotiation

Use the show ptp clock running domain command to display the PTP clock configuration:

Router# show ptp clock running domain 0

 

 

 

 

 

PTP Ordinary Clock [Domain 0]

 

 

 

 

 

 

 

State

 

Ports

Pkts sent

Pkts rcvd

 

 

 

 

FREQ_LOCKED

1

1757273

599954

 

 

 

 

 

 

 

PORT SUMMARY

 

 

 

 

 

 

 

Name

Tx Mode

 

Role

Transport

State

Sessions

 

 

 

o

unicast

 

master

Lo20

Master

5

 

 

 

 

 

 

SESSION INFORMATION

 

 

 

 

 

 

 

o [Lo20] [Sessions 5]

 

 

 

 

 

 

 

 

 

 

Peer addr

Pkts in

Pkts out

In Errs

Out Errs

 

 

 

 

 

 

Cisco ASR 901 Series Aggregation Services Router Software Configuration Guide

 

 

 

 

 

 

 

 

 

 

22-32

 

 

 

 

 

 

 

 

OL-23826-09

 

 

 

 

 

 

 

 

 

 

 

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Image 410
Cisco Systems A9014CFD manual Verifying PTP Configuration on the 1588V2 Master, Typical configuration on a 1588V2 master is