Express Tunnel process

The physical dedicated lines of Baidu AI Cloud's Express Tunnel (ET) product support two modes: self-applied dedicated line mode and cross-account dedicated channel mode (sharing partners' resources). This article introduces the access processes of the two modes, and you can choose the most suitable access method according to your actual situation.

Express Tunnel process

In the self-applied Express Tunnel mode, each stage from applying for a dedicated line to realizing business cloud access through the dedicated line takes a certain amount of time. Please fully evaluate the time consumption of each stage according to the actual situation and reserve sufficient time.

The configuration of dedicated lines is divided into two scenarios. Please choose according to your own situation:

Figure I Cloud-based VPC Communicating with IDC Through a Dedicated Line

Figure II Adding a Dedicated Channel to a Cloud Smart Network Instance

Application process

Including 2 scenarios:

Scenario I: Cloud-based VPC communicates with IDC through a dedicated line

Scenario II: Adding a dedicated line channel to a Cloud Smart Network instance

Note: The authorization letter for dedicated line connection is used to authorize third-party ISPs to enter Baidu AI Cloud data centers for construction and build dedicated line connections.

1. Before accessing the physical dedicated line on the console, please complete the pre-access preparation work. For specific operations, refer to Operation Preparation.
2. After completing all preparation work, you need to sign in to the Baidu AI Cloud Express Tunnel Console to apply for a physical dedicated line. For specific operations, refer to Apply for Physical Dedicated Line.
3. After the physical dedicated line is successfully accessed, you need to create a dedicated channel, a dedicated gateway, etc., to realize cloud access. For specific operations, refer to Create Dedicated Channel, Create Dedicated Gateway, and On-premises IDC Connecting to Cloud-based VPC Through Multi-Line ECMP (Dynamic Routing).

Approval process

1. After completing all preparation work, you need to go to the Baidu AI Cloud Express Tunnel Console to apply for a physical dedicated line.
2. Please contact Baidu AI Cloud staff for review immediately after applying for the physical dedicated line through tickets, phone calls, or other methods.
3. After receiving the information, Baidu AI Cloud staff will contact you and assist in handling the ticket or Letter of Authorization (LOA) for entering the data center for construction.

Note: LOA or tickets are usually time-sensitive. For specific time, you can contact Baidu AI Cloud staff. The port is usually reserved for 30 days.

Shared Express Tunnel process

A shared dedicated line refers to the cross-account dedicated channel mode that shares partners' resources. In this mode, tenants do not need to access Baidu AI Cloud dedicated lines by themselves, but directly apply for shared dedicated lines from dedicated line partners that have already accessed Baidu AI Cloud access points in advance. Using this mode, tenants only need to connect the network between the on-premises IDC and the ISP's access point, and can use the Express Tunnel function through the cross-account dedicated channel created by the dedicated line partner.

• Multiple tenants share the physical dedicated line between the "dedicated line partner access point" and the "Baidu AI Cloud access point", and all tenants' shared dedicated lines share the bandwidth of this physical dedicated line. Therefore, shared dedicated lines are suitable for small-bandwidth services.

Dedicated line partners can directly use Baidu AI Cloud's shared dedicated line function. Dedicated line partners create shared dedicated lines for tenants, and tenants accept and use the shared dedicated lines.

• Dedicated line partners have completed the laying and construction of physical lines between the "dedicated line partner access point" and the "Baidu AI Cloud access point". Dedicated line partners only need to help tenants complete the line laying and network connection between the tenant's IDC and the "dedicated line partner access point". Compared with exclusive dedicated lines, the construction cycle of shared dedicated lines is generally shorter, which is suitable for services with short cloud access time requirements.
• For shared dedicated lines created by dedicated line partners for multiple tenants, a VLAN ID range will be specified, and resource isolation between multiple tenants is achieved based on VLAN IDs.

Application process

Scenario I: Dedicated channel bound to a dedicated gateway

Scenario II: Dedicated channel loaded into a CSN instance

Description:

• Accounts A and B in the above figures are both Baidu AI Cloud accounts and are root account IDs.
• The egress traffic fee of the dedicated channel is charged on a pay-as-you-go basis. Baidu AI Cloud currently offers a preferential policy of waiving the egress traffic fee for newly added dedicated lines. For any changes, please refer to the official website notice.