[asterisk-users] Client Asterisks can't connect when main Asterisk reboot

[Antony Stone]

On Monday 26 March 2018 at 10:58:01, Administrator TOOTAI wrote:

> Hi all,
> 
> we are running some Asteriks (version 13 on Debian Stretch) as VM/kvm in
> datacenter and have trunks with other Asterisk (v1.8 11 or 13) instances
> behind FW. Problem we face is that when we reboot the DC Asterisks, the
> trunks (SIP or IAX) become alive from DC Asterisks to clients ones but
> UNAVAILABLE the other way.
> 
> In clients logs we see
> 
> Registration for 'XXX at ourDCAsteriks' timed out, trying again (Attempt
> #5550)
> 
> or UNREACHABLE in case of no registration or IAX
> 
> Sometimes a restart from client Asterisks is enough (SIP or IAX reload
> has no effect) to recover the full trunk, but in most cases we have to
> reboot the client server :(
> 
> If we use a VPN (OpenVPN) between Asterisks, no problem.
> 
> What can be the problem ?

Are you doing NAT between the two servers?  Your comment about using a VPN 
makes me think you probably are.

In that case I suggest the problem is with stale connection tracking table 
entries on the machine which is doing the NAT.


Regards,


Antony.

-- 
I thought I had type A blood, but it turned out to be a typo.

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