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- What's New
- Function Overview
- Product Bulletin
- Service Overview
- Getting Started
- User Guide
- API Reference
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Best Practices
- Direct Connect Best Practices
- Connecting an On-Premises Data Center to a VPC over a Single Connection and Using Static Routing to Route Traffic
- Connecting an On-Premises Data Center to a VPC over a Single Connection and Using BGP Routing to Route Traffic
- Connecting an On-Premises Data Center to a VPC over Two Connections in Load Balancing Mode (Virtual Gateway)
- Connecting an On-Premises Data Center to a VPC over Two Connections in an Active/Standby Pair (Virtual Gateway)
- Connecting an On-Premises Data Center to Multiple VPCs that Do Not Need to Communicate with Each Other
- Connecting an On-Premises Data Center to Multiple VPCs in the Same Region Using Direct Connect and VPC Peering
- Using a Public NAT Gateway and Direct Connect to Accelerate Internet Access
- Troubleshooting
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FAQs
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Popular Questions
- What Are the Network Requirements for Connections?
- How Do I Select a Carrier When Purchasing a Connection?
- How Will I Be Billed for Direct Connect?
- How Do I Submit a Service Ticket?
- How Do I Test the Network Connectivity Between a Location and the Cloud?
- What Do I Do If I Select the Wrong Carrier When Creating a Connection?
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Product Consultation
- What Are the Network Requirements for Connections?
- What Are 1GE and 10GE?
- Is BGP Routing Supported in Direct Connect?
- How Do I Submit a Service Ticket?
- What Are the Network Latency and Packet Loss Rate of a Connection?
- Are the Uplink and Downlink Bandwidths of a Direct Connect Connection the Same?
- What Do I Do If I Select the Wrong Carrier When Creating a Connection?
- How Do I Plan the VPCs for a New Connection?
- What Are Local and Remote Gateways (Interconnection IP Addresses)?
- How Do I Configure BFD for a Connection?
- Leased Line
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Interconnection with the Cloud
- Can I Access the Same VPC over Multiple Connections?
- How Do I Plan the CIDR Blocks for a Connection?
- What Should I Consider When I Use Direct Connect to Access the Cloud?
- Does Direct Connect Support NAT?
- Can the VLAN of the On-premises Network Be Used in the VPC Through Direct Connect?
- Can My On-Premises Data Center Access Multiple VPCs Through One Connection?
- Can Direct Connect Be Used with Similar Services of Other Cloud Service Providers?
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Networking and Scenarios
- Can Multiple Connections Access the Same VPC?
- Can My On-Premises Data Center Access Multiple VPCs Through One Connection?
- Can Direct Connect Be Used with Similar Services of Other Cloud Service Providers?
- Can I Limit the Bandwidth Available on Each Hosted Connection?
- How Do I Plan the VPCs for a New Connection?
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Related Console Operations
- How Do I Submit a Service Ticket?
- How Can I Unsubscribe from Direct Connect?
- What Parameters Can Be Modified After I Have Created a Virtual Interface?
- Do I Need to Delete the Virtual Gateway and Virtual Interface Before Deleting a Hosted Connection?
- How Do I Change the Routing Mode of a Connection?
- How Do I Delete a Hosted Connection?
- What Is the BGP ASN Used by Huawei Cloud?
- What Are Local and Remote Gateways (Interconnection IP Addresses)?
- Troubleshooting
- Billing
- Resource Monitoring
- Quota
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Popular Questions
Notes and Constraints
Resource |
Default Quota |
How to Increase Quota |
---|---|---|
Number of connections that can be created by an account in each region |
10 |
|
Number of virtual gateways that can be created by an account in each region |
5 |
|
Number of virtual interfaces that can be created by an account in each region |
50 |
|
Number of local subnets for a virtual gateway |
50 |
Increasing the quota is not allowed. |
Number of routes for BGP sessions on a virtual interface |
100 |
|
Number of remote subnets for a virtual interface |
50 |
Restrictions on Locations
Before creating a connection, you need to select a location. Note the following restrictions:
- There may be more than one location in each region. In this case, network latency from each location to different AZs in the region should be less than 5 ms.
- If your workloads have demanding requirement for network latency, you can submit a service ticket to confirm which location is the nearest to the AZ where your cloud servers are running.
Product Use Restrictions
- The CIDR block of the VPC cannot overlap with the CIDR block used by the on-premises network.
The on-premises network cannot use 100.64.0.0/10, 127.0.0.0/8, 169.254.0.0/16, and 224.0.0.0/3 because they are reserved for the VPC service.
- 1GE and 10GE single-mode optical ports can transmit data up to 10 km. If you need an optical port to transmit data for more than 10 km, or you need a 40GE or 100GE port, you need to buy optical modules by yourself. For suggestions on optical module selection, submit a service ticket.
- If you use a Direct Connect connection to access ELB, you must select Source IP hash as the load balancing algorithm and disable sticky sessions for ELB.
- Direct Connect can respond to common ICMP packets (echo packets whose type is 8 and code is 0 and do not carry IP options) for ping detections.
- For each connection, a maximum of 30 ping detections can be performed on the local gateway IP address over the port per second.
- To connect on-premises data centers through enterprise routers, ensure that the on-premises data centers are connected to different devices. For details, submit a service ticket.
- A virtual gateway can be associated with only two different devices.
Construction Notes
- Your construction company must comply with the regulations presented by the equipment room carrier and engineers. In case of any violation, the construction cannot be completed.
- No optical-to-electrical converters can be hosted or installed in the equipment room.
- Network blocking due to state policies or Huawei Cloud management will delay the construction. In the event of such situation, contact your Direct Connect manager.
- The equipment room at a location is operated by a telecom carrier or a third party. If there are fees for connecting your leased line to the equipment room or an in-building cable, pay the fees to the equipment room carrier.
- You need to apply for a Letter of Authorization (LOA) and present the LOA when entering the equipment room for construction.
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