[cisco-voip] CCM Cluster Failover TImes

[David Zhars]

I am posing a scenario, that the Pub has just crashed.  Maybe the janitor
accidentally pulled the power cord, or a breaker has tripped and my battery
backup was dead and I didn't know it (these have happened to me before!)

It sounds like 8.5.1 (is Cisco up to 8.5.22 yet, heh heh, sorry my OT rant
about rapid version increases) has a real fast failover.  I understand it
depends a bit on the phones too, these are mostly 7940s and 7960s.

My understanding is that with an H.323 gateway, the call will stay up, and
the phone will reset once the call terminates (assume the call comes in on
an FXO port on the 2801).

Dave

On Fri, Dec 17, 2010 at 9:55 AM, Ryan Ratliff <rratliff at cisco.com> wrote:

> What is doing the failover?
>
> For phones there will be differences in model, phone load, and perhaps even
> protocol.  Gateways will also have different behavior for SIP, SCCP, MGCP,
> and H.323.
>
> -Ryan
>
> On Dec 17, 2010, at 10:45 AM, David Zhars wrote:
>
> Upgrading to CM 8.0 in a week.  We will install a Pub/Sub setup.
>
> Wondering what the failover times are typically (assume an unexpected
> failure of Pub).
> I have been told variously that it's instant, and that it's a minute or so.
> Does failover time vary based on gateway type (H.323 versus MGCP)?
>
> Thanks.
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