asterisk users - May 2006 - why a perfectly fine iax2 host becomes UNREACHABLE?

I've got this low-ping 100%-up dsl connection between two asterisk 
1.2.7.1 servers. And oftentimes one of them would declare its opposite 
UNREACHABLE.

Why can this happen? The host stanzas in iax.conf have raw IP's, so no 
DNS monkey business here.. An inquiring mind wants to know.

On Thursday 04 May 2006 11:31, Louis-David Mitterrand
wrote:
> I've got this low-ping 100%-up dsl connection between two asterisk
> 1.2.7.1 servers. And oftentimes one of them would declare its opposite
> UNREACHABLE.
I see this happen on occasion as well -- same type of setup here, static IPs, 
no DNS, route seems just fine.  I even have qualify smoothing turned on, 
because I thought that the odd UDP packet would just get lost and cause this, 
but that doesn't seem to help at all.

This occurs with every version of Asterisk I've used (svn trunk), including 
the latest checkout in late April.

-A.

Tom Engleward wrote:
> --- "Eric \"ManxPower\" Wieling"
<eric@fnords.org>
> wrote:
>> If Asterisk has a DNS lookup failure it will never
>> retry that lookup.
> "Never" meaning until the next "reload" command is
> issued, or until the next "restart" command is issued,
> or until the next time the OS reboots, or until the
> next time asterisk and its config files are deleted
> and reinstalled?
Correct.  Perhaps "never automatically" would be a better choice of
words.

-- 
Now accepting new clients in Birmingham, Atlanta, Huntsville, 
Chattanooga, and Montgomery.

Andrew Kohlsmith wrote:
> On Friday 05 May 2006 08:47, Eric "ManxPower" Wieling wrote:
>> Any one of those will work.
> 
> I disagree; this is NOT an Asterisk DNS issue.  I specify my hosts by IP
and
> this still happens (in fact, it happened this morning).
Then you are experiencing a different problem.


-- 
Now accepting new clients in Birmingham, Atlanta, Huntsville, 
Chattanooga, and Montgomery.

Just as another datapoint, I have a cheap (~$17) walmart cordless phone
at home hooked to my digium dual FXS card, and it works great, with the
possible exception that there is a buzz (I perceive it as ground hum)
for about the first 4 seconds of EVERY call, and slowly it diminishes.
I don't know if there's a component of the echo cancellation that is
fixing it, or if it's some capacitor draining that fixes it, but even my
toughest asterisk critic (my wife) hasn't complained a bit about it.
:-)

-----Original Message-----
From: Andrew Kohlsmith [mailto:akohlsmith-asterisk@benshaw.com] 
Sent: Friday, May 05, 2006 8:47 AM
To: asterisk-users@lists.digium.com
Subject: Re: [Asterisk-Users] why a perfectly fine iax2 host becomes
UNREACHABLE?


I don't have any trouble with my cordless phone to a TDM400, but there
could 
be a wealth of factors playing into the chop you're seeing, as I'm sure 
you're aware.  I had a *really* bad digital cordless phone that I
actually 
sent to Digium to help them figure out WHY this particular phone hated
their 
FXS ports so badly, but I don't think I'd ever heard back from them.
I've 
never had another phone act that way though.  (Panasonic digital
cordless, I 
have another one from Panasonic and it works perfectly fine.)

-A.
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