Re: Point 2 - Clarification of a receiver with two receive-only interfaces

[Dr G Fairhurst <gorry@erg.abdn.ac.uk>]

 Can a receiving system join multiple feeds (i.e. have two active
 receive-only interfaces)?

I don't really understand what happens when a receiving system has
two active receive-only interfaces from different feeds.

Can someone help me?

 If this allowed, ***MUST*** one IP address be allocated per
        receive-only interface?
 (If not, I wonder what happens when broadcast packets are duplicated?
 and how does a feed router know how to route to the clients?)

Gorry Fairhurst.

> The protocol requires that receivers keep a list of active
> feeds and certain information about those feeds. We would
> like to make explicit what information is needed. We also
> want to clarify that the method of discovering some of this
> information (in particular, the FUMAC value for an active
> feed) is not specified here. This allows for a variety of
> encapsulations and implementations. We changed the
> text in Section 6.3.3 to be expanded as follow:
>
> +    Based on the reception of HELLO messages, receivers discover the
> +    presence of feeds, maintain a list of active feeds, and keep track of
> +    the tunnel end-points for those feeds.
> +
> +    For each active feed, at least the following information will be
> +    kept:
> +      FUIP              - feed unidirectional link IP address
> +      FUMAC             - MAC address corresponding to the above IP address
> +      (FBIP1,...,FBIPn) - list of tunnel end-points
> +      tunnel type       - tunnel type supported by this feed
> +      Seq               - "Seq" value from the last HELLO received
> +                           from this feed
> +      timer             - used to timeout this entry
> +
> +    The FUMAC value for an active feed is needed for the
> +    operation of this protocol. However, the method of
> +    discovery of this value is not specified here.
> +
> +    Initially, the list of active feeds is empty.
>
> Walid Dabbous
> http://www.inria.fr/rodeo/dabbous
> INRIA U.R. de Sophia Antipolis      | Email : dabbous@sophia.inria.fr
> 2004, Route des Lucioles BP 93      | Phone : +33 4 92 38 77 18
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