From: Serhat Aslan (serhatworks@gmail.com)
Date: Wed Jul 25 2007 - 08:24:31 ART
Hi John,
Trunk mechanism is a carrier protocol for vlan informations, block-unicast
mechanism is kind of broadcast preventation (Roughly/not technical sense ).
For the unknown IP. The switch ca send to another switch. It can say that
ip-mac is not mine " it could be yours, so I am sending" , or at the
result of accessive cam table overflow behavior arp-flooding
attack/asymetric routing problem/insufficient memory. We can assume that
"flooding unicast" is switch last resort job, for unknown ips.
So we can independently think the relation between trunk mechanism and
block-unicast.
Serhat Aslan
On 7/25/07, johngibson1541@yahoo.com <johngibson1541@yahoo.com> wrote:
>
> I know ARP would bypass the blocking. Otherwise the blocking
> would make the port useless.
>
> But which direction of ARP can "plumb" the blockage?
>
> You think the ARP request from the being protected
> port would do the trick right?
>
> But what happens if we block the trunk links ?
> Is it still analyzable ?
>
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