HI Kim If I remember correctly ..STP, BPDU, CDP like things use VLAN 1 to travel across. Thats the only reason..vlan 1 is made not be pruned.
Guys please correct me If I am wrong. Thanks On Thu, Aug 20, 2009 at 4:51 PM, Kim Pedersen <[email protected]> wrote: > Hi All, > > I have a question regarding the native vlan in dot1q. Frames comming > from the vlan that is choosen as the native vlan is not tagged across > the trunk. I can manually set the native vlan to be, say 200. I can then > also say that i only want to allow vlan 250 to cross the trunk. I was > under the impression that stuff like CDP used the native vlan across > trunks, but if it is manually pruned (by not allowing it), why does it > still work? > > Am I wrong in that CDP does not use the native vlan? > > What I was trying to do was to follow Cisco's guidelines as to not use > the native vlan 1. However, since VTP cant prune vlan 1, I was doing it > manually and came up with this thought... > > Hopefully someone can clear it up for me. > > Thanks > > Sincerely, > Kim Pedersen > > -- > > // Freedom Matters > // Follow my progress on: http://kpjungle.wordpress.com > > _______________________________________________ > For more information regarding industry leading CCIE Lab training, please > visit www.ipexpert.com > -- Thanks®ards Vishal +91-997111066 Best way to predict the future ..... is to create it
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