[asterisk-users] How to have failover sip interface?

[Sherwood McGowan]

On Sun, Oct 24, 2010 at 12:02 PM, sean darcy <seandarcy2 at gmail.com> wrote:
> My asterisk machine has 2 nic's. One nic (ETH0) is connected to a cable
> modem. The other nic (ETH1) is connected to an internal lan. The
> internal lan also has access to the internet.
>
> The cable service, Time-Warner RoadRunner, is great when up, but is not
> reliable. And sip connections are excellent. The connection through the
> internal lan (Verizon DSL) is reliable but lousy. Sigh.
>
> When the cable is down, the interface connection to the cable modem
> stays up. An ifconfig shows ETH0 as up. The only way to tell is to ping
> an outside address.
>
> I thought of bonding. But that won't work since it will see ETH0 as up,
> even if the cable service is down.
>
> Is there a way to implement network failover that actually checks for
> true internet connection? This way I can keep my sip connection up, even
> if degraded.
>
> sean
>
>
>
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To be honest, I'm not sure Asterisk could do that, but I could be
wrong. I've tried to fool with multiple interfaces in the past and as
I recall Asterisk can only bond to 1 interface. However, if anyone
else knows different I'd LOVE to find that they changed that :D