Forums > General Discussion > Private VLANs
k00laid
12 posts
8 Oct 2010 at 2:51 p.m. UTC

While I'm know there is a theoretical answer for this question, in application what is the difference between defining a private VLAN and simply creating a a VLAN and not assigning it an IP address?
stretch
269 posts
9 Oct 2010 at 12:50 a.m. UTC

Private VLANs behave differently at layer two. Check out Basic Private VLAN Configuration.
deepakarora1984
16 posts
11 Oct 2010 at 8:54 a.m. UTC

Adding little more, Protected ports under switch configuration was another and legacy way of doing almost similar thing with some differences. But on the other hand to Run PVLANs your switch needs to be Transparent Mode.

HTH... Deepak Arora http://deepakarora1984.blogspot.com/
k00laid
12 posts
12 Oct 2010 at 5:12 p.m. UTC

But from a practical standpoint where i really don't care about the waste of IPs (this is on the private side), is there a security difference between the two? Can a packet it make its way from VLAN A to VLAN B if there is no IP address set on the VLAN router for one of the VLANS?

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