[c-nsp] VLAN 1 through routed ports

Gert Doering gert at greenie.muc.de
Thu Jan 8 09:00:19 EST 2009


Hi,

On Thu, Jan 08, 2009 at 07:16:19PM +0530, Hitesh Vinzoda wrote:
> I m havin old setup of two 6509 connected together by means of routed ports.
> On one of the 6509 i have vlan 1 with user subnet configured on it along
> with DHCP. now when i connect anything on vlan 1 on 2nd 6509, the desktop is
> leased with the IP of vlan 1 configured on 6509-1. any idea why i m gettin
> ip leased through DHCP.
> 
> note: no helper commands are used on vlan 1 of 6509-2 and no ip address
> exists on SVI vlan 1.

Could be a trunk port between those 6509s.  

Check with "show mac-address vlan 1" or "show spanning-tree vlan 1" on
which ports vlan 1 is active where it shouldn't be.

gert
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Gert Doering - Munich, Germany                             gert at greenie.muc.de
fax: +49-89-35655025                        gert at net.informatik.tu-muenchen.de
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