From: Thomas Fowles (tfowles@gmail.com)
Date: Mon May 19 2008 - 09:09:21 ART
According to the 3550 command reference, " When you remove VLAN 1 from a
trunk port, the interface continues to send and receive management traffic,
for example, Cisco Discovery Protocol (CDP), Port Aggregation Protocol
(PAgP), Link Aggregation Control Protocol (LACP), Dynamic Trunking Protocol
(DTP), and VLAN Trunking Protocol (VTP) in VLAN 1."
Here is a link from the archives regarding this same topic which backs up
the statement above (Bob Sinclair ran a sniffer trace to see what would pass
on the trunk):
http://www.groupstudy.com/archives/ccielab/200311/msg01312.html
HTH
-Tom
CCIE#18762
http://www.linkedin.com/in/thomasfowles
On Mon, May 19, 2008 at 6:12 AM, ccie <ccie@just-horizon.com> wrote:
> Dear Exerpts,
>
>
>
> Can I exclude the native vlan with such configurations?
>
>
>
> interface FastEthernet0/23
>
> switchport trunk encapsulation isl
>
> switchport trunk allowed vlan 11,13,15
>
> switchport mode trunk
>
> switchport nonegotiate
>
>
>
> If yes, how would the CDP and VTP messages be exchanges, once VLAN 1 has
> been excluding over the trunk link?
>
>
>
>
> Regards,
>
> Amin
>
>
> _______________________________________________________________________
> Subscription information may be found at:
> http://www.groupstudy.com/list/CCIELab.html
This archive was generated by hypermail 2.1.4 : Mon Jun 02 2008 - 06:59:17 ART