Protocol version re-negotiation
Brian.Rosen at MARCONI.COM
Thu Feb 22 16:38:41 EST 2001
It's unlikely that we will do anything that adds
new features by edits to the implementor's guide.
It's reasonable to have explanatory text in such a
document that is not normative.
I think you failover, upgrade, and failover back
with this version of the protocol.
> -----Original Message-----
> From: Paul Rheaume [mailto:paul.rheaume at alcatel.com]
> Sent: Thursday, February 22, 2001 1:00 PM
> To: ITU-SG16 Mail List
> Cc: megaco at fore.com
> Subject: Re: Protocol version re-negotiation
> Where is the appropriate list to discuss this issue?
> We feel that version negotiation and the version upgrade
> process is not
> well specified and needs to be discussed and properly defined at the
> latest in version 2 of the specification. That means looking at this
> very soon.
> I think this issue belongs to the next version of the Implementor's
> Nancy Devin wrote:
> > How does a non-redundant MG upgrade to a new
> > Megaco version without affecting service? How
> > does a redundant MG upgrade to a new Megaco
> > version without affecting service?
> > It is mentionned in RFC3015 that Protocol version
> > negotiation can be done at Restart, Failover, and
> > Handoff serviceChanges. It is not mentionned
> > explicitly how version protocol re-negotiation is
> > done after the MG has registered with the MGC. in
> > both situation
> > This could be done in at least two different ways
> > as listed bellow.
> > 1- Protocol version negotiation could be
> > initiated using the Failover serviceChange. A
> > Failover serviceChange with a protocol version
> > would indicate that the MG has been configured
> > with a new H.248 protocol version. Sent from the
> > MG to the MGC, it indicates that the MG has been
> > configured with a new H.248 protocol version.
> > This serviceChange shall not indicate Failure of
> > the working MG. This would require that for
> > non-redundant MGs, both the primary IP address and
> > the secondary IP address be the same.
> > 2- Protocol version negotiation could be
> > intiated using a new serviceChange method:
> > VersionNegotiation (Method 7 of the serviceChange
> > command as defined in RFC3015) This serviceChange
> > would be sent from the MG to the MGC to initiate
> > protocol version initiation. It indicates that
> > the MG has been configured with a new H.248
> > protocol version. Sent from the MGC to the MG, it
> > indicates that the MGC has been configured with a
> > new H.248 protocol version.
> > Comments please.
> > Nancy
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