I am thinking that since VLAN 1 is your native VLAN it will not matter that you have "pruned" VLAN 1 from your trunk. You will have your allowed trunk VLANs doing their thing with tagged traffic and you will have all your untagged traffic flowing across via the untagged native VLAN 1.
Derek Mills -----Original Message----- From: [email protected] [mailto:[email protected]] On Behalf Of marc abel Sent: Wednesday, December 22, 2010 10:25 AM To: [email protected] Subject: [OSL | CCIE_RS] Effects of pruning native vlan I have a question about pruning vlans from trunks. Say for example I have switch A and switch B connected by a trunk. Switch A allows all vlans accross the trunk. Switch B does not allow vlan 1 across the trunk. Both switches have the native vlan set to 1 for the trunk. Encapsulation is dot1q and not tagging the native vlan. What would be the expected result of this? Would untagged vlan 1 traffic still flow across the link from A to B or would it be pruned? _______________________________________________ For more information regarding industry leading CCIE Lab training, please visit www.ipexpert.com ---------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------- Anheuser-Busch InBev Email Disclaimer www.ab-inbev.com _______________________________________________ For more information regarding industry leading CCIE Lab training, please visit www.ipexpert.com
