With the continuous improvement of network attack technology and the continuous discovery of network security vulnerabilities, traditional firewall technology plus traditional IDS technology can no longer cope with some security threats.

With the upsurge of SDN over the years, a ten-year-old protocol has once again attracted people's attention, and it is the NETCONF protocol.

The network configuration protocol NETCONF (Network Configuration Protocol) provides a mechanism for managing network devices. Users can use this mechanism to add, modify, and delete the configuration of network devices, and obtain configuration and status information of network devices.

In the VRRP standard protocol mode, only the Master router can forward packets, and the Backup router is in the listening state and cannot forward packets.

In short, Link Aggregation technology is to aggregate multiple physical links into a logical link with a higher bandwidth. 

Wireless Distribution System means that APs connect two or more independent local area networks through wireless links to form an interconnected network for data transmission.

MSDP, short for Multicast Source Discovery Protocol (Multicast Source Discovery Protocol), is an inter-domain multicast solution developed to solve the interconnection between multiple PIM-SM (Protocol Independent Multicast Sparse Mode) domains. Program.

Terminal access means that the terminal device is connected to the router, and the data communication between the terminal device and other terminal devices is completed through the router.

VLAN (VirtualLocal Area Network). VLAN is a group of logical devices and users. These devices and users are not restricted by their physical location.

The standard architecture of NFV includes three parts: NFVI, MANO and VNFs. The goal of Network Function Virtualization (NFV) technology is to provide network functions on standard servers, rather than on custom devices.