What happens when the VoIP valn meets the Distribution layer and needs to access switches that are in a different switch block in a different part of the campus? The CCNP book strongly advises that vlans do not cross Distribution layers switches into the core.
Voice VLANs are nothing different to any other access VLAN (barring the fact that it is presented as dot1q trunked at the edge port rather than as untagged traffic).
As such, if your other access VLANs are large L2 domains crossing switch blocks, the VVLANs probably will be as well.
Best practice for both is not to do that, so if (for example) you have a routed distribution layer and unique access VLANs per edge switch block, then you would mirror that configuration with your VVLANs.
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Topology: IP Phone > Switches > Microsoft NPS setup to forward 802.1x
proxy to > ISE 2.1 patch 3 Authentication: EAP-TLS using Cisco MIC SANs
Phone Models 802.1X support? 802.1x flavor Addtl Comment EAP-MD5 EAP-TLS
Cisco 3905 Y Y N Cisco 6911 Y Y N Cisco ...