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Assessment Title
Rule Text
VVoIP system components must receive IP address assignment and configuration information from a DHCP server with a dedicated scope to the VVoIP system.
Description
Discussion Text
When using Dynamic Host Configuration Protocol (DHCP) for address assignment and host configuration, different DHCP scopes (different address space, subnets, and VLANs) must be used for voice components and data components. Optimally, the design would place a DHCP server dedicated to providing IP address and configuration information to the VVoIP system components separate from the IP address and configuration information to data system components. The DHCP server providing VVoIP devices should be in a Voice Video and/or Unified Capability (UC) domain having the same address space and VLAN to prevent DHCP requests routed onto the data environment that degrade the separation of the VVoIP environment and the data environment. With centralized management of DHCP (and other services, such as DNS) this separation is obviously eliminated. DHCP requests and responses for voice must reside on a separated VLAN.
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