asterisk users - Sep 2009 - internet connection lagged -> * lagged ...

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Hello,

In a local network, an asterisk with 30 phones.
For external call, there is a few ITSP.

When internet connection lagged (ping as 1800 ms) the internal phones
also lagged. ITSP and phones are then UNREACHABLE.

If it restart asterisk (always with the internet connection lagged), the
ITSP does no register (normal) but internal phones does no register also ...

During asterisk start, module chan_sip is sufficiently long to load.

Do you have an idea ?

Best regards,

Antoine Patte
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On Wed, 2 Sep 2009, Antoine Patte wrote:
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>
> Hello,
>
> In a local network, an asterisk with 30 phones.
> For external call, there is a few ITSP.
>
> When internet connection lagged (ping as 1800 ms) the internal phones
> also lagged. ITSP and phones are then UNREACHABLE.
>
> If it restart asterisk (always with the internet connection lagged), the
> ITSP does no register (normal) but internal phones does no register also
...
>
> During asterisk start, module chan_sip is sufficiently long to load.
>
> Do you have an idea ?
DNS.

Run a caching DNS server on your Asterisk box, or a suitable device on 
your network. (eg. the DHCP server)

Gordon

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Gordon Henderson wrote:
> DNS.
> 
> Run a caching DNS server on your Asterisk box, or a suitable device on 
> your network. (eg. the DHCP server)
The network gateway has already a dns cache.
Inaddition, the ip of itsp were resolved properly.

I also think this issue but has the hostname of the ITSP were determined ...

- --
Antoine Patte
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On Wed, 2 Sep 2009, Antoine Patte wrote:
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> Gordon Henderson wrote:
>> DNS.
>>
>> Run a caching DNS server on your Asterisk box, or a suitable device on
>> your network. (eg. the DHCP server)
>
> The network gateway has already a dns cache.
> Inaddition, the ip of itsp were resolved properly.
>
> I also think this issue but has the hostname of the ITSP were determined
...
>
Try watching the outbound traffic from the box with tcpdump during one of 
these "outages".  You will likely see the DNS requests that are timing
out
and causing the problem.

j
> - --
> Antoine Patte
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