Hi Piccardo, To prevent a subnet for each VLAN, you can work as per RFC3069. www.ietf.org/rfc/rfc3069.txt It uses a similar concept but does not talk about conserving VLAN's as such. Do let me know if you have any doubts? Thanks, Vishwas -----Original Message----- From: vlan-bounces@xxxxxxxxxxxxxxx [mailto:vlan-bounces@xxxxxxxxxxxxxxx] On Behalf Of liam sharp Sent: Friday, October 08, 2004 4:23 PM To: vlan@xxxxxxxxxxxx Subject: [VLAN] Linux bridge+vlan+tagging Hi, I just read this posting: [snip] Hi Peter, Sometimes we need a feature as requested. Check out http://ietfreport.isoc.org/ids/draft-sanjib-private-vlan-02.txt link. That is how it is implemented in a lot of switches. Thanks, Vishwas [/snip] I'm looking to achive the same thing as describe in this document, and he's the 'but', - The switches I am using do no provide this Private Vlan functionality. They do provide basic Vlan functionality though. My question is - I'm going to configure all ports in my networks to be on different Vlans and plug my gateway in to a trunk port to see all the traffic from each vlan. Does anyone have any experience of doing this ? I'm running a dhcp server and other process on the private site of my gateway and don't want to configure a subnet for each vlan. I guest what I wanted to do is have the tags stripped of when data arrives, and some how reappended when data is resent ? Any pointers much appreciated !!! Thanks Piccalo