From: Petr Lapukhov (petrsoft@gmail.com)
Date: Wed Mar 22 2006 - 05:08:35 GMT-3
Hello Nadeem,
AFAIK, the idea of Community vlan simply considers that you have
multiple separate groups of ports (communities), nested into same
primary vlan.
Inside the same group (community) hosts can freely communicate.
But communications are prohibited between different communities
(port groups).
HTH
Petr
2006/3/22, Nadeem Lughmani <lughmani@gmail.com>:
>
> Hi All,
>
> To understand Private vlans one needs to understand Primary and Secondary
> vlans. Secondary vlans can be of two types
>
> Isolated- Any switch ports associated with an isolated VLAN can reach the
> primary VLAN but not any other secondary VLAN. In addition, hosts
> associated
> with the same isolated VLAN cannot reach each other. They are, in effect,
> isolated from everything except the primary VLAN.
>
> Community- Any switch ports associated with a common community VLAN can
> communicate with each other and with the primary VLAN but not with any
> other
> secondary VLAN. This provides the basis for server farms and workgroups
> within an organization, while giving isolation between organizations.
>
>
>
> I understand the logic behind the Isolated, but Community seems to be just
>
> like any other (normal) vlan, where hosts within a vlan can communicate
> with
> each other at layer2
>
> If you have better explanation, why community was required , please let me
> know.
>
>
> Thanks
> Nadeem
>
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