Network Device/Function Virtualization NFV
introduce
Realize network function virtualization through NFV technology, including virtual network cards, virtual switches, routers, firewalls, etc., which can be created and used on demand.
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Traditional network equipment
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NFV equipment
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Nature
- Software is decoupled from dedicated hardware, and software implements network hardware functions
- Adopt X86 server instead of traditional dedicated network equipment
Network Architecture Virtualization SDN
introduce
The control levels of each network equipment vendor are combined, and then the centralized control plane controls the underlying network equipment (which can control the global network and dynamically optimize and allocate the global network and operation and maintenance) for data forwarding.
Nature
The control layer and data forwarding layer are separated. The
physical network architecture is abstracted into a virtual network architecture
. Programming interfaces are used to realize customized network design.