Re: [MEDIACTRL] Chaining the MRB function

"Worley, Dale R (Dale)" <> Mon, 19 September 2011 17:50 UTC

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From: "Worley, Dale R (Dale)" <>
To: "DRAGE, Keith (Keith)" <>, "" <>
Date: Mon, 19 Sep 2011 13:47:45 -0400
Thread-Topic: Chaining the MRB function
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Subject: Re: [MEDIACTRL] Chaining the MRB function
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> From: DRAGE, Keith (Keith) []
> Given that the MRB can look to an application like a resource
> function, and and to a resource function like an application, it would
> appear to me that there is not reason why MRB functionality cannot be
> chained either logically, i.e. visit an MRB which supplies details of
> another MRB which is then queried for the particular resource, or
> physically, as in both MRBs operating in in-line mode.
> I can so far see no mention of this possibility in the mrb document.

I am no expert in this, but I've been going over
draft-ietf-mediactrl-mrb.  It looks to me like chaining MRBs is
possible.  The problem is that there has been no intention to make the
interface an MRB presents to an AS look like the interface a MS
presents to an MRB, and similarly, the interface an AS presents to an
MRB does not look like the interface an MRB presents to an MS.

But it does looks like the elements and facilities of the interfaces
contain the needed data, so that if one MRB wished to use another MRB
as a "subordinate" resource broker, it can do so straightforwardly,
even though it is not described in the drafts.