Hi,
I have a customer who wished to enable broadcast
suppression for a new network we're building.
Generally I've never used it - I normally like to keep
switch configurations as simple as possible. However I
have no reason to tell him not to. It's a good
feature, and broadcast suppresion is one of the
reasons I recommend keeping VLANs smaller rather than
bigger (where possible - lots of other things
ocnsidered of course).
However I am wondering what's a good limit. Years ago,
it was said 100 broadcasts per second was a good value
- this equates to about 12% of Ethernet if the
broadcast are full length packets.
These days things are a bit different with Pentium
processors on hosts, and FastEthernet.
I was thinking of simply setting all ports to 15% as
the broadcast threshold, however if some ports are
100Meg and another 10Meg, then 15% of 100Meg will kill
the 10Meg ports.
Therefore I would be looking at seting 15% on 10Meg
ports, and 1.5% on 100Meg ports.
This is the sort of thing I wanted to avoid -
differenting settings on different ports etc.
Any advise - any horror stories I should perhaps know
about.
Thanks
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