Alternatives to storm-control on Cat 6509.

Nick Hilliard nick at foobar.org
Fri Aug 21 10:57:26 CDT 2009


On 21/08/2009 16:39, Roland Dobbins wrote:
> 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.

Unless your broadcast storm happens on an untagged vlan.  Or unless you're 
running VTP and also have ipv6 hosts connected to the switch on .1q tagged 
ports, and consequently have to disable VTP pruning in order to get said 
ipv6 .1q hosts to be able to talk to each other, and then if you have a 
broadcast storm on any vlan, it could hose your entire l2 network, because 
you've disabled vtp pruning.

Anyway, the point is: storm control on customer facing equipment is a basic 
requirement.

Nick




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