You can use a leased line from your service provider to establish a physical connection from your on-premises data center to an Alibaba Cloud access point. After the physical connection is established, you can create a Virtual Border Router (VBR) to connect your on-premises data center with Alibaba Cloud to build hybrid cloud networks. As a private network connection, the physical connection does not pass through the Internet. Compared with traditional Internet connections, the physical connection is safer, faster, more reliable, and has less latency.

Features

The Express Connect physical connection interface (through which a leased line connects to an Alibaba Cloud access point) provides the following features:

  • Multiple connection modes

    You can use a point-to-point Ethernet connection or MPLS VPN connection. The physical connection supports RJ45 and LC optical ports (maximum distance: 10 km) with a transmission rate from 1 Mbit/s to 100 Gbit/s.

  • Redundant connections

    The physical connection uses Equal-Cost Multi-Path routing (ECMP) to implement redundancy with two leased lines.

    • If both leased lines are connected to different access points in the same region, the leased lines are naturally redundant to each other.

    • If both leased lines are connected to the same access point in the same region, you can select the first leased line as the redundant connection when applying for the second leased line.

Limits

The physical connection interface has the following limits:

  • Physical connections do not support SDH G.703 or V.35 interfaces.

  • Alibaba Cloud provides one or more access points in each accessible region. Different access points have different service provider restrictions. Before applying for a physical connection interface, you must open a ticket to obtain the target access point and corresponding restriction information of your service provider.