[ntp:questions] multicast configuration help
Collins
ccw.in.nc at gmail.com
Fri Nov 17 19:37:27 UTC 2006
Hello All-
I'm trying to help some coworkers troubleshoot the following problem.
We have a NTP server and a client. They work toghther fine in UNICAST
mode. When
we try to run te client in multicast mode it works after ann intial
echange(volley). One of the things we are trying to do is get the
client to listen only. When we add novolley to the clinet ntp.conf
file
it does not form any assocations.
Can any one direct me as to how to get a client to listen to a
multicast group address without sending any traffic? I have attached
the ntp.conf files for working and nono-working scenarios
Thanks in advance
Collins
client: (Does not work)
broadcastclient 224.0.1.1 novolley
restrict 224.0.1.1 mask 255.255.255.255 notrust nomodify notrap
disable auth
driftfile /etc/ntp/drift
broadcastdelay 0.008
logfile /var/ntp.log
client:(works)
multicastclient 224.0.1.1
restrict 224.0.1.1 mask 255.255.255.255 notrust nomodify notrap
disable auth
driftfile /etc/ntp/drift
broadcastdelay 0.008
logfile /var/ntp.log
server:
restrict 124.101.91.221 nomodify notrap noquery
server 127.127.1.0 #local clock
broadcast 224.0.1.1 ttl 5 #key 1 ttl 5
disable auth
driftfile /etc/ntp/drift
broadcastdelay 0.008
authenticate no
logfile /var/ntp.log
keys /etc/ntp/keys
This is the output when it does not work.
# ntpq -np
input_handler: fd=4 length 12 from 7f000001 127.0.0.1
receive from 127.0.0.1
in process_control()
opcode 1, found command handler
read_status: ID 0
sendpkt(fd=4 127.0.0.1, 127.0.0.1, ttl=-6, 12)
No association ID's returned
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