[ntp:questions] NTP orphan mode with manycast configuration
Steve Kostecke
kostecke at ntp.org
Tue Aug 14 15:25:50 UTC 2007
On 2007-08-14, sylcournoyer at gmail.com <sylcournoyer at gmail.com> wrote:
> Has anybody been able to make the orphan mode work with manycast
> clients/servers?
Yes, I have with IPv4.
It is easiest to set-up if you use symmetric keys instead of Autokey.
Each node in the "orphan mesh" can use the following files:
-------------------------------------8X-------------------------------------
# /etc/ntp.conf, configuration for ntpd
# IPv4 Multicast + Symmetric Keys + Orphan mode
# Adjust for your OS
driftfile /var/lib/ntp/ntp.drift
# Symmetric keys
keys /etc/ntp.keys
trustedkey 1
# Orphan Mode
tos orphan 5
# Multicast "mesh node" - the order of these directives is critical
multicastclient 224.0.1.1
broadcast 224.0.1.1 key 1
# Add some server lines here for those systems that will be synchronized
# to remote time servers or local ref-clocks. Append iburst to the
# server lines for remote time servers.
-------------------------------------8X-------------------------------------
# /etc/ntp.keys
1 M your_shared_password
-------------------------------------8X-------------------------------------
Please note that you must configure routing for the multicast address on
all of the systems in the "orphan mesh".
FWIW I'm currently running Manycast (w/ Symmetric Keys) / Orphan mode
(over IPv6) on my LAN. ...
--
Steve Kostecke <kostecke at ntp.org>
NTP Public Services Project - http://support.ntp.org/
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