[zeromq-dev] Publisher side filtering...

[Gerard Toonstra]

Conceptually, to some degree, they are similar.

Multicast addressing operates at the level of the IP protocol and is
implemented in routers.

Publisher forwarding is done at the level of the application/platform.

Differences are that managing subscriptions at the IP level is probably much
harder than at the level of the application (security concerns when/if they
apply).
Multicast routing also requires you to define a specific "ip" group for
every topic you wish to publish.

Not saying that one is worse/better than the other, it depends on what you
want to achieve, number of topics, security, etc.
But clearly, some things you can do with pub forwarding will be
significantly harder to do with IP multicast, hence my interest.

G>

On Mon, Oct 25, 2010 at 3:26 PM, Sven Koebnick <Sven.Koebnick at t-online.de>wrote:

> just a thought: isn't subscription forwarding more or less, what multicast
> hubs do? sounds to me like reinventing the wheel under a new name.
>
> rgds
> sven
> ---------------------------------------------------------
> E = mc² ± 2dBA    ----- everything is relative
> ---------------------------------------------------------
>
>
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