multicast? why multicast?

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multicast? why multicast?
by devil advocate on Thursday 28/Apr/2005, @09:55

Everybody know multicast doesn't scale. It can be "pretty" on LANs with, say, up to a dozen boxes, but on LANs with tens, even hundreds of boxes is a maintenance nigthmare. Indeed, anything that pushes directly from the "clients" is a maintenance nigthmare sooner or later. All you win when your LAN is short is lost when it grows up.

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Re: multicast? why multicast?
by Jakub Stachowski on Thursday 28/Apr/2005, @10:22

mDNS daemons are required to aggresively cache everything they get to avoid unnecessary traffic - so it should scale better than unicast. And what exactly are the maintenance problems do you expect?

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Re: multicast? why multicast?
by anon on Thursday 28/Apr/2005, @15:15

How about security concerns: Think about a very quick answer from a malicous host, which binds all the services. Neat for phishing or man in the middle attacks.

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Re: multicast? why multicast?
by Spy Hunter on Thursday 28/Apr/2005, @21:33

Give examples please. Your groundless criticism is not constructive. This is not NetBIOS; Zeroconf is a real standard made by real networking experts and standardized by the IETF.

Zeroconf is the direction that networking in general needs to move. Networking should be as easy as plugging in a cable (or just using wireless). There's no reason it needs to be a maintenence nightmare when scaled up; a smooth transition is possible. If anything is going to provide that, it's Zeroconf and the IETF.

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