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Terms

Last Updated: Feb 22, 2018
Term Description
Express Connect A data transmission channel powered by Alibaba Cloud infrastructure. It provides secure and reliable intranet-like connections between different networks, such as between VPCs, or between VPCs and on-premises IDCs.
Virtual Private Cloud (VPC) A customized private network established on Alibaba Cloud. VPCs are logically isolated from each other. You can create and manage instances, such as ECS, Server Load Balancer, and RDS instances, in a VPC.
Physical connection The abstraction of a physical line used to directly connect an on-premises IDC to Alibaba Cloud. Each line a customer uses to access Alibaba Cloud corresponds to a physical connection object.
Access point The geographical location of the end, to which the physical leased line connects, on Alibaba Cloud. An access point belongs to a certain region and has two access devices. When a single region has multiple access points, any of these can be used to access Alibaba Cloud VPCs.
VRouter The hub of VPCs, connecting all VSwitches in a VPC and serving as a gateway device that connects the VPC to other networks. It forwards network traffic according to route entries.
Virtual border router (VBR) You can create multiple virtual border routers on a physical connection. Each VBR is responsible for forwarding the data of a VLAN in Alibaba Cloud. With VBR, you can transmit your data directly to any region of Alibaba Cloud.
Router interface (RI) A router interface (or VRouter interface) is a virtual network device. It can be attached to a VRouter to create an Express Connect with another VRouter interface, delivering an intranet connection between different networks.
Route table A list of route entries on the VRouter.
Route entry Each item in a route table is a route entry. It defines the next hop address of the network.
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