On Tue, 16 May 2006 18:12:49 +0200 Angelo Turetta <[EMAIL PROTECTED]> wrote:
> Ispánovits Imre wrote: > > This switch is a 24 ports one, which can be configured to 6x4 trunks. So I > > guess I have to set max. 3 vlans on a NIC in pfSense and connect it to a > > trunk on the switch, 3 free ports in the trunk can then be used to connect > > to > > the different nteworks. Or am I wrong? > > Wrong :-) > > You are victim of the original interpretation of the same terms that > it's done by the switch manufacturers. > > In Cisco-world, a trunk port is one where packets belonging to multiple > VLANs are flowing, each one tagged with the related VLAN id (in simple > words, an additional 16 (??) bit integer is added to the ethernet > header: the VLAN TAG, tying each packet to its VLAN) > > Other vendors (I know Allied Telesyn for first hand experience, from > your words DLink must be usin the same glossary) define trunk an > aggregation of more than one physical port, used to increase the > bandwidth of a single link. In these switches the Cisco's 'trunk' ports > are instead defined (I think more correctly) 'tagged' ports. > > The NIC (or NICs) where you define VLANs on in pfSense, must be > connected to a port on your switch which is a 'tagged' member of those > same VLANs. I mean: if you define three VLANs with tags 3,4,5 on your > xl0 interface, you must define VLANs with the same tags on the switch, > and define at least one port belonging to the three as a tagged port, to > which you will connect the cable from your xl0 interface. > > Keep also in mind that it's better not to use a NIC where you define > VLANs also as an untagged port (in my previous example, never use the > xl0 interface directly, but only the vlanX that you will get). > > Hope this helps > > Angelo. > Modena - Italy > Thank you for explaining this. It was a great help to avoid a bigger mess. :) If in this switch I dont't find any possibility to define that tagged port ten it means that this switch is unable to do this kind of job, or maybe if I define a port which belongs to all the defined vlans, as a common one, I can use it to connect the nic to? Thanks again Imre Budapest - Hungary
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