[nsp] VLAN database propagation

Vincent De Keyzer vincent at dekeyzer.net
Mon Mar 22 03:29:54 EST 2004


Ok,

now that you have really scared me... how do I get rid of VTP?

I have 3 switches in 'master' mode. Would it be safe to change them to
'transparent'?

Vincent


> -----Original Message-----
> From: cisco-nsp-bounces at puck.nether.net 
> [mailto:cisco-nsp-bounces at puck.nether.net] On Behalf Of 
> sthaug at nethelp.no
> Sent: vendredi 19 mars 2004 9:03
> To: cisco-nsp at puck.nether.net
> Subject: Re: [nsp] VLAN database propagation
> 
> 
> > > Overall I *do* like VTP, because it's so convenient, but 
> you need to make
> > > sure that the number of people that connect and configure 
> new VTP members
> > > is small, and that all those people know what they are doing.
> > 
> > Agreed. Personally I have not experienced any such problems in the
> > past years.. 
> 
> We have experienced lots of problems with VTP, even in recent years.
> Not with misconfigured switches "taking over" as VTP masters, but with
> misbehavior on the VTP masters themselves. This, and the fact that VTP
> forces you to have the same VLANs available everywhere, means that VTP
> is right out - it's simply not considered as a usable tool.
> 
> We run all switches in VTP transparent mode, and use "allowed vlan" on
> all trunks. This has dramatically reduced our VLAN problems.
> 
> Steinar Haug, Nethelp consulting, sthaug at nethelp.no
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