[asterisk-users] Sonicwall potentially causing long ping times to SIP phones

[Craig Van Ham]

Can you get another public IP? If so put another router in. Use vlans  
to seperate the traffic.

Sent from my iPhone

On 23-Oct-08, at 11:28 AM, "James Lamanna" <jlamanna at gmail.com> wrote:

> Bill Michaelson wrote:
>
>> Sorry for asking the obvious question, but are there other elements  
>> of
>> the slow path besides the Sonicwall? I mean, what is "in front" of  
>> the
>> Sonicwall? Also, might the Sonicwall be positioned as some kind of  
>> choke
>> point in the topology, thus leading to genuine sporadic congestion?
>>
>
> The device in front of the SonicWall is a Cisco Router.
> Ping times to the ethernet interface of the router are good (~10ms).
> Also, having a user behind the SonicWall ping the PBX results in an
> average 20-30ms ping time.
> So it seems as though the lag is specific to SIP signaling
> (specifically the OPTIONS requests that asterisk qualify sends out).
>
> Unfortunately I can't really ask the client to dump their SonicWall
> (which we do not manage).
> On the SonicWall, I know it is configured for "Consistent NAT" and
> "SIP Transformations" are disabled.
>
> -- James
>
>> On Wed, Oct 22, 2008 at 11:35 AM, James Lamanna  
>> <jlamanna at gmail.com> wrote:
>>> Hi,
>>> I'm having an issue where some phones behind a sonicwall are auto- 
>>> congesting.
>>> The status on "sip show peer" shows ping times anywhere from 80ms  
>>> all
>>> the way up to 1100ms.
>>> PCs behind the same firewall have a ping time of about 30ms to the  
>>> PBX itself.
>>>
>>> Does anyone know if the sonicwall is inserting delay into the SIP
>>> signaling path and lagging the OPTIONS messages for qualify?
>>>
>>> Thanks.
>>>
>>> -- James
>>>
>
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