[c-nsp] wisdom of switchport block ...

Kenny Kant akennykant at gmail.com
Thu Feb 13 21:29:56 EST 2014

I have been thinking about doing he same thing on our customer access networks.  I would be curious what others features you are enabling as well good topic!

Sent from my iPhone

> On Feb 9, 2014, at 6:34 PM, Mike <mike-cisconsplist at tiedyenetworks.com> wrote:
> Hello,
>    I am looking at tightening up my subscriber access network and, if I understand the documentation correctly, 'switchport block unicast' will prevent a cisco switch (3560g in this case) from flooding unicast frames out any port so configured, unless the destination mac address was learned from that port. Is there any reason on earth why I would NOT want to have this as a standard default option? Arp would still work, as would dhcp and pppoe... trying to fathom how this could be bad? Would appreciate any insights!
> Thank you.
> Mike-
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