Virtual private network (VPN) feature

Virtual private network (VPN) is a networking technology that transmits private data through encapsulation or encryption on the public network at a security level of private networks and uses the public network to build a private network.
VPN routing and forwarding table (VRF) is also called a VPN instance. Each router is logically divided into multiple virtual routers, that is, multiple VRFs. Each VRF corresponds to a VPN and has a separate routing table, forwarding table, and interface. This is similar to the simulation of a VPN-shared router into multiple dedicated routers, so that the routing information exchanged between different devices is only the route of this VPN, isolating the VPN routes. After VPN maintenance and management instances are configured, the server end protocols of the device, that is, telnet server ends (SSH and CLI), SNMP, and TRACE, accept connection requests of only the specified management and maintenance VPN networks and do not accept those of other VPNs or of the public network.
Inband management VPN uses the VRF function to plan the remote network management system (NMS) and OLT in the same VPN network. In this way, carriers can use private network IP addresses to remotely manage and maintain devices. This method saves public network IP addresses and isolates the management network from the public network.
For more information, visit Huawei technical support website.

Scroll to top