Chapter 22 Configuring Clocking

Configuring PTP for the Cisco ASR 901 Router

 

Command

Purpose

 

 

 

Step 8

delay-req interval interval

(Optional) Configures the minimum interval allowed

 

 

between PTP delay request messages.

 

Example:

The intervals are set using log base 2 values, as follows:

 

Router(config-ptp-port)# delay-req

5—1 packet every 32 seconds

 

interval 1

 

 

 

 

4—1 packet every 16 seconds

 

 

3—1 packet every 8 seconds

 

 

2—1 packet every 4 seconds

 

 

1—1 packet every 2 seconds

 

 

0—1 packet every second

 

 

-1—1 packet every 1/2 second, or 2 packets per second

 

 

-2—1 packet every 1/4 second, or 4 packets per second

 

 

-3—1 packet every 1/8 second, or 8 packets per second

 

 

-4—1 packet every 1/16 seconds, or 16 packets per

 

 

second.

 

 

-5—1 packet every 1/32 seconds, or 32 packets per

 

 

second.

 

 

-6—1 packet every 1/64 seconds, or 64 packets per

 

 

second.

 

 

-7—1 packet every 1/128 seconds, or 128 packets per

 

 

second.

 

 

The default is -6.

 

 

 

Step 9

sync interval interval

(Optional) Specifies the interval used to send PTP

 

 

synchronization messages. The intervals are set using log

 

Example:

base 2 values. The Cisco ASR 901 router supports the

 

following values:

 

Router(config-ptp-port)# sync

 

 

 

interval -5

-5—1 packet every 1/32 seconds, or 32 packets per

 

 

second.

 

 

-6—1 packet every 1/64 seconds, or 64 packets per

 

 

second.

 

 

The default is -6.

 

 

 

Step 10

end

Exits clock port configuration mode and enters privileged

 

 

EXEC mode.

 

Example:

 

 

Router(config-ptp-port)# end

 

 

 

 

 

Cisco ASR 901 Series Aggregation Services Router Software Configuration Guide

22-36

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Cisco Systems A9014CFD manual 22-36, Delay-req interval interval