[c-nsp] VTP in IOS config

[Tim Stevenson]

The VLAN database is not phased out, the vlan-database config mode is what 
has been phased out.

In VTP client & server mode, the VLAN/VTP domain info is still stored in a 
separate vlan.dat file, but you now use normal config mode to modify this 
configuration. Why? Because VTP requires instant NVRAM changes based on the 
contents of VTP packets - this is in direct opposition to the traditional 
IOS model, where NVRAM doesn't change unless you tell it to (wr mem/copy 
run start).

In VTP transp mode, you also use normal config mode to modify the config, 
and it your config is also stored in the normal config file 
(running/startup), since VTP transparent switches do not modify their 
config based on external packet reception.

Tim

At 01:00 PM 2/14/2005, MADMAN averred:

>    Setting up a 4507R with supIVs running 12.2.25(ESW) the other day.
>After adding the config I was explaining the various parameters to the
>customer but I didn't notice any vtp info, vtp was client and had the
>customers choosen domain name.  I then changed the mode to transparent
>and then in the running config I noticed the vtp mode and the domain!
>Switch config to server and the info was no longer in the config file.
>Seems that if you configure the vtp for client or server neither will
>show up in the config, nor will the domain name.  Change it to
>transparent and you see the mode and the domain which is basically
>irrelevant since the domain is meaningless with vtp disabled.
>
>    I tried this on another 4507 in the lab running earlier IOS and on a
>6506 sup1msfc2 and a sup720, same results.
>
>    Is this by accident or design?  If design why?  I know this used to
>be done and held in the VLAN database but support for it is being phased
>out.
>
>    Thanks
>
>    Dave
>--
>David Madland
>CCIE# 2016
>Sr. Network Engineer
>Qwest Communications
>612-664-3367
>
>"Emotion should reflect reason not guide it"
>
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Tim Stevenson, tstevens at cisco.com
Routing & Switching CCIE #5561
Technical Marketing Engineer, Catalyst 6500
Cisco Systems, http://www.cisco.com
IP Phone: 408-526-6759
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