[nsp] VLAN database propagation

Cristian BICA bcd at rdsnet.ro
Thu Mar 18 07:44:45 EST 2004


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Hi,

VLAN propagation is done by VTP(VLAN Trunking protocol) ... for more 
details read "Understanding and Configuring VLAN Trunk Protocol (VTP)"

http://www.cisco.com/en/US/tech/tk389/tk689/technologies_tech_note09186a0080094c52.shtml


On Thursday 18 March 2004 14:38, Vincent De Keyzer wrote:
> Hello,
>
> a very VLAN basic question: what makes VLAN databases to be
> propagated (or not) between two switches?
>
> I have 3 switches with a seemingly similar config; VLAN database
> changes are propagated from switch A to switch B (and vice-versa) but
> not to switch C...
>
> Switch A: IOS (tm) C3500XL Software (C3500XL-C3H2S-M), Version
> 12.0(5.3)WC(1), MAINTENANCE INTERIM SOFTWARE
> Switch B: IOS (tm) C2900XL Software (C2900XL-C3H2S-M), Version
> 12.0(5)XU, RELEASE SOFTWARE (fc1)
> Switch C: IOS (tm) C3500XL Software (C3500XL-C3H2S-M), Version
> 12.0(5.4)WC(1), MAINTENANCE INTERIM SOFTWARE
>
> Vincent
>
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