Well I know that spanning tree is layer 2 not layer three I was just making a comparison. I'm basically saying that all switch management traffic is sent over the native vlan which is by default 1. And OSPF sends out information to 224.0.0.5. It was probably a terrible comparison but I'm just trying to figure out a way to say basically the native vlan is what the switches send traffic out on.
> From: [email protected] > To: [email protected] > CC: [email protected]; [email protected] > Subject: RE: [OSL | CCIE_RS] (ccie_rs)_native_vlan > Date: Fri, 4 Mar 2011 15:59:14 -0700 > > Oops. Hit "Reply" instead of "Reply All." > > >Well vlan 1 by default carries all of the spannin tree messages and things > >like that. Its basically the > >equivalent of 224.0.0.5 in OSPF. Its how the switches communicate. Hopefully > >what I've said helps and someone > >else please correct me if I'm wrong but this is how I understand > >spanning-tree > > Spanning tree BPDUs are actually layer 2, not layer 3. They are sent to > the L2 multicast address 01:80:C2:00:00:00. I believe that VLAN1 just > carries all traffic by default unless that traffic is tagged for another > VLAN (even supposing the native VLAN on, say f0/2 was VLAN3, if traffic > were to enter f0/2, it would be tagged as VLAN3 as it left f0/2 then > dealt with as necessary). > > I'm sure that the BPDU information is correct, and I _think_ the VLAN > info is as well, but I'm certainly open to correction if necessary. > > --jdguffey > _______________________________________________ For more information regarding industry leading CCIE Lab training, please visit www.ipexpert.com
