There is no real harm in having 6 VTP servers, other than making your environment looks a bit.... disorganized. :-P
Personally, I prefer using Transparent across the network. I don't trust VTP Client/Server mode. My reasons are:
1. Historically, there's been some bugs and security alerts associated to VTP Client/Server, but not with Transparent.
2. VTP Transparent may encourage more disciplined change control being followed because you'd have to explicitly make VLAN config changes on the affected switches.
3. VLAN pruning is easier - You only create VLANs on the switches that require them. With Client/Server, when you create a VLAN, it gets propagated to all switches regardless of whether or not those switches need the VLAN.
4. Less chance of human error affecting the whole network - accidents happen. In Client/Server mode, if you make the slightest mistake in VLAN config change, the result will be propagated across all switches, which may be catastrophic (depending on the nature of the change)
5. Less prone to Denial-of-Service - in the past, some security auditors (which can be overly paranoid, as we know) raised an issue that it is easy to perform DoS attack on VTP Client/Server. An attacker only needs the VTP domain name and the database version number, which can presumably be obtained easily using any network "sniffer". It's kinda true, but.... there's a whole swag of "requirements" that need to be met for this type of eventuality to occur. I can go on and on about this. :-)
As far as changing from Server to Client vs Server to Transparent... Admittedly I haven't done that for the longest time (last time I did was close to 10 years ago!), but from what little I remember, I think changing to Client is more painless than to Transparent.
This is actually a pretty cool feature, i didn't even know it existed until I was looking for a solution to advertise a subnet (prefix in BGP talk), only if a certain condition existed. This is exactly what conditional advertisements does
j ai une question j ai achete un routeur cisco 887VA-k9 , je le configuré avec la configuration ci- dessous
si je le lier avec mon pc portable sur l un de ses ports directement ça marche toute est bien ( la connexion internet + m...
Attached policy provides CLI access to the Cisco 4G router over text messaging. Two files are in the attached .tar file:
2. PDF with instructions on how to load and use the .tcl file.