You may stop the data traffic since one side is disallowing VLAN 1 however management traffic will still pass. Remember, you can't really disable VLAN 1 per Cisco specs and Cisco still uses VLAN 1 for stuff like VTP, CDP, et al
Thank you, Steve Di Bias Network Engineer - Information Systems Valley Health System - Las Vegas Office - 702- 369-7594 Cell - 702-241-1801 [email protected] -----Original Message----- From: [email protected] [mailto:[email protected]] On Behalf Of marc abel Sent: Wednesday, December 22, 2010 8:25 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 UHS Confidentiality Notice: This e-mail message, including any attachments, is for the sole use of the intended recipient (s) and may contain confidential and privileged information. Any unauthorized review, use, disclosure or distribution of this information is prohibited. If this was sent to you in error, please notify the sender by reply e-mail and destroy all copies of the original message. _______________________________________________ For more information regarding industry leading CCIE Lab training, please visit www.ipexpert.com
