It will have effect on all transit traffic, but not on the control traffic sent to the switch directly.
Even though it doesn't deal directly with native VLAN, rather VLAN 1, please take a look at the following article: http://blog.ipexpert.com/2011/01/19/old-ccie-myths-vlan-1/ Please, read the follow-comments - few students posted valuable information and did further research on the topic. -- Marko Milivojevic - CCIE #18427 (SP R&S) Senior CCIE Instructor - IPexpert On Thu, May 10, 2012 at 7:51 AM, imad Abdallah <[email protected]> wrote: > So basically you're saying that, given the fact that native vlan arn't > tagged, the list of allowed vlan over a trunk will have no effect over it! > But What if we issued the "tag native" command while still denying vlan 1 > over the trunk? Cdp, vtp, and stp will not work anymore? > Am i right? > > Sent from my Nokia phone > -----Original Message----- > From: Ken Wyan > Sent: 10/05/2012 5:47:46 pm > To: [email protected] > Cc: [email protected] > Subject: Re: [OSL | CCIE_RS] Native Vlan > > Native vlan packets are sent untagged & it's not needed to allow > specifically through the trunk. > > We can change native vlan number (in fact we have 2 different vlan numbers > at two end switches) & it works fine. native vlan number isn't sent in > packets. > > (if you configure 2 different native vlans in 2 ends you will get a CDP > error message) > > You need to change native vlan if you want to send vlan 1 with a tag ( eg: > you need CoS markings to be preserved) > > Ken > > On Thu, May 10, 2012 at 1:55 PM, imad Abdallah > <[email protected]>wrote: > >> >> Hi,I'm bit confused regarding native vlan and trunk allowed vlan. Let's >> say we have two switches connected via trunk. Both switches have the >> default native vlan (vlan 1). On the trunk between them, we issued the >> command: swi trun allo vlan 2-100. So the native vlan 1 is not allowed on >> the trunk. is it mandatory for the native vlan to be allowed on thee trunk? >> Do we need to change the native vlan from (1) to any other vlan that are >> allowed through the trunk? Thanks >> _______________________________________________ >> For more information regarding industry leading CCIE Lab training, please >> visit www.ipexpert.com >> >> Are you a CCNP or CCIE and looking for a job? Check out >> www.PlatinumPlacement.com <http://www.platinumplacement.com/> >> >> http://onlinestudylist.com/mailman/listinfo/ccie_rs >> > _______________________________________________ > For more information regarding industry leading CCIE Lab training, please > visit www.ipexpert.com > > Are you a CCNP or CCIE and looking for a job? Check out > www.PlatinumPlacement.com > > http://onlinestudylist.com/mailman/listinfo/ccie_rs _______________________________________________ For more information regarding industry leading CCIE Lab training, please visit www.ipexpert.com Are you a CCNP or CCIE and looking for a job? Check out www.PlatinumPlacement.com http://onlinestudylist.com/mailman/listinfo/ccie_rs
