NTP always prefer itself as the best

[parazhang]

NTP always prefer itself as the best

I want to use one linux box B as both ntp client and ntp server--

win-ntp-server-B------linux-server-B-------linux-client-C

here is my linux server ntp.conf:
-------------------------------------------
restrict 127.0.0.1
restrict -6 ::1

# Hosts on local network are less restricted.
#restrict 192.168.1.0 mask 255.255.255.0 nomodify notrap

# Use public servers from the pool.ntp.org project.
# Please consider joining the pool (

http://www.pool.ntp.org/join.html).

server winboxA
#server 1.centos.pool.ntp.org
#server 2.centos.pool.ntp.org

#broadcast 192.168.1.255 key 42 # broadcast server
#broadcastclient # broadcast client
#broadcast 224.0.1.1 key 42 # multicast server
#multicastclient 224.0.1.1 # multicast client
#manycastserver 239.255.254.254 # manycast server
#manycastclient 239.255.254.254 key 42 # manycast client

# Undisciplined Local Clock. This is a fake driver intended for backup
# and when no outside source of synchronized time is available.
server 127.127.1.0 # local clock
fudge 127.127.1.0 stratum 10
-------------------------------------------
[root@linuxboxB~]# ntpq -p
remote refid st t when poll reach delay offset jitter
==================================================
winboxA .LOCL. 4 u 130 256 357 0.427 -259605 238141.
*LOCAL(0).LOCL. 10 l 60 64 377 0.000 0.000 0.001

We can see that the * is one line of LOCAL(0).
Why it use local ntp server but not winboxA?? I have changed A's stratum to 4,it is higher than linux box B's 10.

Thanks in advance.

Regards.

PZ

 

[khalidaaa]

Your WinboxA poll is 256 which means that its ntp record is not stable yet and a reach of 357 suggest that it is not in sync 100% yet!

Have a look at this link for more info:

http://mailgate.supereva.com/comp/comp.protocols.time.ntp/msg08309.html

Try this for a debug mode:

ntptrace -dv

When it comes to ntp, this is always my guide:

http://www.tek-tips.com/viewthread.cfm?qid=1250150&page=1

Regards,
Khalid