I've a big problem with several Cisco 2600 switches in our network.
Here's the senerio....
1, Very large campus
2, A LOT of vlans
3, More vlans planned for an ongoing project and even more for an upcomming
4, The biggie...must use VTP, customer wants a centralized point to manage
Total amount of vlans will be in excess of 255.
I think to myself, should be no problem. I'll do vtp pruning at the core and
also only allow specific vlans on specific trunks.
Well, I lab'd it before implementing and it's not working the way I
anticipated....Pruning is working great, restricting what vlans can traverse
the trunk is also working great. Problem is that all the vlans are still
being advertised thru VTP. What's happening is that the 2950's and 3500's
are reverting back to transparent mode due to their vlan limitation.
Getting a message "%SW_VLAN-6-VTP_MODE_CHANGE: VLAN manager changing device
mode from CLIENT to TRANSPARENT."
Thus the access layer switches do not learn about any of the vlans,
everything breaks, and I get frustrated.
Am I missing something here folks? Ideas? Do there is a possibility to restrict the "local vlans"
And what does it mean on the whitepaper "support more than 4000 Vlan ID's"?