On Fri, 21 Aug 2009, Roland Dobbins wrote:
there are two things you care about: storm control and port security (mac
address counting).
Chopping up the layer-2 broadcast domain for a given VLAN into smaller pieces
via pVLANs can't hurt, either, as long as the hosts have no need to talk to
one another - and it has other benefits, as well.
I understand why hosts need to send broadcasts. In a close/single
customer environment, broadcasts could be useful. I hope most
future protocol designers now think of using multicast or other
discovery mechanisms besides broadcast.
But in a service provider network (or any managed network), is there any
reason why a customer needs to hear other customer's broadcasts? In
practice, are there any useful broadcast messages in a multi-customer
environment that can't/shouldn't be proxied by the network operator or
handled other ways.
