The great thing about VPLS (virtual private LAN service), says Matt Kolon, senior technical marketing manager for Juniper Networks, a prime mover behind the VPLS standard, is that it's essentially free to the service provider. "There's not even a soft-ware upgrade involved. Just enable the feature on our routers and you're in busi-ness." But just what business that might be is where Kolon and other advocates of the emerging standard are not in harmony.
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