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Not to be fixed

LIN6-4490 : WRLinux 4.3 ntp - uses a non-recommended min poll interval

Created: Apr 15, 2013 Updated: Apr 19, 2018

Resolved Date: Apr 17, 2018

Previous ID: LIN4-5689

Found In Version: 6.0

Severity: Severe

Applicable for: Wind River Linux 6

Component/s: Networking

Description

There is following description in rfc5905.
(The recommended min poll interval is 4(16s))

===
A client sends messages to each server with a poll interval of 2^tau
seconds, as determined by the poll exponent tau.  In NTPv4, tau
ranges from 4 (16 s) to 17 (36 h).
===


WRLinux 4.3 ntp uses a non-recommended poll interval.

- WRL4.3(ntp-4.2.6p1)
ntp-4.2.6p1/include/ntp.h:
#define NTP_MINPOLL     3       /* log2 min poll interval (8 s) */

Steps to Reproduce

1. run ntpdate command
  ntpdate 192.168.167.72(ntp server IP address)

2. check the packet capture
  ("Peer Polling Interval" field)