Mailing List Archive

Expressway HA Failover when ISP fails
Hi All

We have a situation with a client where they have an Expressway cluster 2 x
ExpC and 2 x ExpE split across two datacentre, each datacentre has
different ISP's. If they have a internet outage at one of the datacentres,
50% of the outbound video traffic is lost.
The CUCM has one SIP trunk with the 2 ExpC IP's so is the Expressway not
able to determine an ISP outage and if not how are 50% of the calls getting
through, does the Expressway load balance between each node in the cluster
and if so is there any way to change this to cater for an ISP outage?
Re: Expressway HA Failover when ISP fails [ In reply to ]
You'll probably want to make that into 2 SIP trunks so it can actually
failover to the other if it gets an error message back from the
Expressway-C.

On Tue, Sep 24, 2019 at 8:43 AM Nick via cisco-voip <
cisco-voip@puck.nether.net> wrote:

> Hi All
>
> We have a situation with a client where they have an Expressway cluster 2
> x ExpC and 2 x ExpE split across two datacentre, each datacentre has
> different ISP's. If they have a internet outage at one of the datacentres,
> 50% of the outbound video traffic is lost.
> The CUCM has one SIP trunk with the 2 ExpC IP's so is the Expressway not
> able to determine an ISP outage and if not how are 50% of the calls getting
> through, does the Expressway load balance between each node in the cluster
> and if so is there any way to change this to cater for an ISP outage?
>
>
>
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> https://puck.nether.net/mailman/listinfo/cisco-voip
>