DUNDi doesn't provide good redundancy for phone registrations. Each phone is
only registered on a single, primary Asterisk system. In the event that the
primary system for a given phone becomes available, the phone will not
re-register until it's registraiton expirey period, on it's secondary Asterisk
system. During this time, the phone cannot be reached. You can cut the phone
registration period right down, to some small period of time, say 5min, but is
that acceptible? Also, keep in mind that the lower the registration period, the
greater the number of registrations, and therefore the greater the network
traffic, and hence, the load on each Asterisk system.
Doug.
-----Original Message-----
From: RR [mailto:[EMAIL PROTECTED]
Sent: Mon 7/10/2006 10:09 PM
To: Asterisk Users Mailing List - Non-Commercial Discussion
Cc:
Subject: Re: [asterisk-users] Server redundancy
unplug, thanks for pointing that out as well as opposed to or in
complement with ARA where you can either implement DUNDi between
clusters of Asterisk servers or have a redundant pair of DUNDi lookup
servers (just like DNS) somewhere remote to the local asterisk
servers. DUNDi is a p2p IAX based protocol to allow for looking up
contact information for a particular registered extension. So in ARA
you can really store all extension based information in the common
database for servers that are local to your network i.e. perhaps on
the same private network or even the same VLAN. Then implement DUNDi
between asterisk servers that are remote to your location and in their
own private network using their own database. Not sure the level of
reliability one can expect using the public internet for DUNDi
look-ups from a server on the other end of the world but in theory it
might be do-able. So if you can't find an extension within your local
database, you perform the DUNDi lookup and find it in your remote
servers. I'm sure the gurus on the list might have plenty to say on
this :)
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