q135/random_k2/random_2.md

Direct Connect

Service Overview

Issue

Date

01

2026-02-27

HUAWEI CLOUD COMPUTING TECHNOLOGIES CO., LTD.

Copyright © Huawei Cloud Computing Technologies Co., Ltd. 2026. All rights reserved.

No part of this document may be reproduced or transmitted in any form or by any means without prior
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 and other Huawei trademarks are the property of Huawei Technologies Co., Ltd.

All other trademarks and trade names mentioned in this document are the property of their respective
holders.

Notice

The purchased products, services and features are stipulated by the contract made between Huawei
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not be within the purchase scope or the usage scope. Unless otherwise specified in the contract, all
statements, information, and recommendations in this document are provided "AS IS" without
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The information in this document is subject to change without notice. Every effort has been made in the
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Huawei Cloud Computing Technologies Co., Ltd.

Address:

Huawei Cloud Data Center Jiaoxinggong Road
Qianzhong Avenue
Gui'an New District
Gui Zhou 550029
People's Republic of China

Website:

https://www.huaweicloud.com/intl/en-us/

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Direct Connect
Service Overview

Contents

Contents

1 What Is Direct Connect?........................................................................................................ 1

2 Product Advantages................................................................................................................ 3

3 Application Scenarios............................................................................................................. 4

4 Functions................................................................................................................................... 6

5 Direct Connect Locations.....................................................................................................10

6 Security.................................................................................................................................... 15
6.1 Identity Authentication and Access Control................................................................................................................ 15

6.2 Auditing and Logging.......................................................................................................................................................... 16

6.3 Monitoring Security Risks.................................................................................................................................................. 16

6.4 Certificates...............................................................................................................................................................................16

7 Permissions............................................................................................................................. 18

8 Notes and Constraints.......................................................................................................... 26

9 Direct Connect and Other Services................................................................................... 29

10 Basic Concepts..................................................................................................................... 31

11 Region and AZ......................................................................................................................34

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Direct Connect
Service Overview

1 What Is Direct Connect?

1 What Is Direct Connect?

Direct Connect allows you to establish a stable, high-speed, low-latency, secure
dedicated network connection that connects your on-premises data center to
Huawei Cloud. Direct Connect allows you to maximize legacy IT facilities and
leverage cloud services to build a flexible, scalable hybrid cloud computing
environment.

Figure 1-1 shows how Direct Connect connects an on-premises data center to the
cloud.

Figure 1-1 How Direct Connect works

Why Direct Connect?

● Network quality: Direct Connect allows you to establish a dedicated network

for data transmission, which brings high network performance, low latency,
and excellent user experience.

●

●

Security: Direct Connect establishes private connectivity between your on-
premises data center and the cloud. Data is transmitted over a secure
dedicated connection.

Transmission speed: A single connection supports up to 100 Gbit/s of
bandwidth.

Components

●

Connection

A dedicated network connection is established between your on-premises
data center and a Direct Connect location over a line you leased from a
carrier. You can create a standard connection by yourself or request a hosted
connection from a partner.

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Direct Connect
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1 What Is Direct Connect?

–

–

A standard connection has a dedicated port for your exclusive use and
can be associated with multiple virtual interfaces.

A hosted connection is created by a carrier (a partner of Huawei Cloud),
who allocates VLAN and bandwidth resources for you. When using this
type of connections, you share a port with other users, and can create
only one virtual interface for a connection.

●

Virtual gateway

A virtual gateway is a logical gateway for accessing VPCs. A virtual gateway
can be associated with only one VPC, and multiple connections can access a
VPC through the same virtual gateway.

● Global DC gateway

A global DC gateway enables your on-premises data center to access VPCs in
multiple regions so you can use a single connection to provide high-speed
access to cloud compute and storage resources in any region.

A global DC gateway can only be associated with connections terminated at
the same Direct Connect location. If there are multiple connections
terminated at different Direct Connect locations, you need to create multiple
global DC gateways.

●

Virtual interface

A virtual interface links a connection with one or more virtual gateways, so
that your on-premises network can access all the VPCs.

Accessing Direct Connect

The public cloud provides a web-based user interface, the management console,
for you to access the Direct Connect service.

●

●

If you already have an account, log in to the management console and
choose Networking > Direct Connect on the homepage.

If you do not have an account, you can sign up for one by referring to
Getting Started.

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Direct Connect
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2 Product Advantages

2 Product Advantages

Direct Connect has the following advantages:

● Dedicated Channels to Safeguard Data Security

–

–

Establish private connectivity between your on-premises network and the
cloud for stable data transmission without compromising privacy.

Secure your data using encrypted, dedicated connections, which provide
higher security and more reliability.

● Multiple Access Options

–

–

You can select from optical bare fibers and other types of leased lines,
such as MSTP and MPLS VPN.

There are a number of Direct Connect locations around the globe, so you
can access the cloud from anywhere nearby.

● Great Scalability for Flexible Service Deployment

–

–

By building a hybrid cloud, you can gain access to virtually unlimited
cloud resources for flexible, scalable deployment.

You can run workloads that span on-premises infrastructure and different
cloud regions and flexibly connect networks across regions.

● Ultra-low Latency and Stable Transmission

–

–

Enjoy faster speeds with up to 100 Gbit/s of bandwidth, supporting
diverse service needs.

Configure your connections in active/active or active/standby pairs for
higher reliability.

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Direct Connect
Service Overview

3 Application Scenarios

3 Application Scenarios

Access to Multiple VPCs from an On-premises Data Center

After you connect your on-premises data center to the cloud using Direct Connect,
you can use Cloud Connect to connect the VPC that your on-premises data center
is accessing to those in other regions, so that your on-premises data center can
access all connected VPCs.

Hybrid Cloud Deployment

Direct Connect allows you to build a hybrid environment for your on-premises
data center and leverage the scalability of the cloud to expand the computing
capability of your applications.

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Direct Connect
Service Overview

Figure 3-1 Hybrid cloud

3 Application Scenarios

Table 3-1 Comparisons of Direct Connect and VPN in hybrid cloud deployment

Scenario

Description

Helpful Links

Cloud
Service

Virtual
Private
Networ
k (VPN)

Connect an on-
premises data
center to the
cloud through
an IPsec tunnel.

Direct
Connect

Connect an on-
premises data
center to the
cloud using a
dedicated
network
connection.

VPN uses an encrypted
communications tunnel to
connect a VPC on the cloud
to an on-premises data
center and sends traffic over
the Internet. It is
inexpensive, easy to
configure, and easy to use.
However, VPN connections
may be affected by the
Internet quality.

Direct Connect provides
physical connections
between VPCs and data
centers. It has the
advantages of low latency
and is very secure. Direct
Connect is a good choice
when there are strict
requirements on network
transmission quality.

Connecting to a
VPC Through a
VPN

What Is an
Enterprise Switch?

Connecting to
Multiple VPCs that
Do Not Need to
Communicate with
Each Other

What Is an
Enterprise Switch?

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4 Functions

4 Functions

Standard Connection

A standard connection provides an exclusive port. You can create standard
connections on the management console. To improve reliability, you can create
multiple connections terminated at different locations and allow them to serve as
backups for each other. If you can select only one carrier due to special
requirements, you must configure different physical routes for your connections.

You can choose self-service connections or full-service connections.

●

●

Self-service connection: Huawei Cloud only provides the port. You need to
create a connection on the console, and lease a line from a carrier.
Full-service connection: You only need to create a connection on the console,
and Huawei Cloud will complete all operations required for network
connectivity.

Figure 4-1 shows an example of how standard connections work.

Figure 4-1 Accessing the cloud using standard connections

For details, see Creating a Connection.

Hosted Connection

If you use a hosted connection to access the cloud, the port you use is shared with
other users. You request a carrier (a partner of Huawei Cloud) to provide a

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Direct Connect
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4 Functions

connection to connect to your on-premises data center to Huawei Cloud. The
partner has pre-connected dedicated lines terminated at the Direct Connect
locations of Huawei Cloud and allocates a connection port to you after receiving
your request.

Figure 4-2 shows an example of how hosted connections work.

Figure 4-2 Accessing the cloud using hosted connections

The following table compares hosted connections with standard connections.

Item

Port

Recomm
ended
bandwidt
h

Estimate
d
construct
ion
period

Parties
involved

Standard Connection

Hosted Connection

Exclusive port

Shared port

1 Gbit/s to 100 Gbit/s

Less than 1 Gbit/s

Two to three months for local lines,
and three to four months for long-
distance lines

About one month

Connection user, leased line carrier,
equipment room provider, and Huawei
Cloud

Connection user, leased
line carrier, and Huawei
Cloud

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4 Functions

Item

Standard Connection

Hosted Connection

Procedur
e

1. You create a connection on the

console to order a port.

2. You contact the leased line carrier
and supervise the line deployment
from your on-premises data center
to the equipment room at the
location you choose.

3. You contact the carrier operating

the equipment room at the location
you choose to complete the cabling
(inlet wire and jumper) inside the
equipment room.

4. Your carrier works with Huawei

Cloud to commission access devices.

5. You complete required network
configuration on the console,
including creating a virtual gateway
and virtual interface.

Billing

● Pay for the port (by month or year)

to Huawei Cloud.

● Pay to the equipment room provider
at the location for the cabling inside
the equipment room.

● Pay to the carrier of your on-

premises data center for the cabling
inside the equipment room.

● Pay to the leased line carrier for

other work and the bandwidth. For
details, see Billing.

1. The partner deploys the
leased line from your
on-premises data
center to the Direct
Connect location you
select.

2. The carrier completes
the commissioning of
access devices.

3. You complete required
network configuration
on the console,
including creating a
virtual gateway and
virtual interface.

● You do not need to pay
for the port to Huawei
Cloud.

● Pay to the carrier of

your on-premises data
center for the cabling
inside the equipment
room.

● Pay to the leased line
carrier for other work
and the bandwidth.

For details, see Partner Connections.

Direct Connect Gateway

●

Virtual gateway: A virtual gateway is a logical gateway that enables an on-
premises data center to access a VPC over a connection. To enable an on-
premises data center to access a VPC over a connection, you can associate the
VPC with a virtual gateway. To access other VPCs, you can use VPC Peering or
Cloud Connect to connect the VPC your on-premises data center is accessing
to these VPCs.

A virtual gateway can only have one VPC associated. An on-premises data
center can access the same VPC over two connections through one virtual
gateway.

For details, see Virtual Gateways.

● Global DC gateway: A global DC gateway enables your on-premises data

center to access VPCs in multiple regions so you can use a single connection

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4 Functions

to provide high-speed access to cloud compute and storage resources in any
region.

A global DC gateway can only be associated with connections terminated at
the same Direct Connect location. If there are multiple connections
terminated at different Direct Connect locations, you need to create multiple
global DC gateways.

For details, see Global DC Gateways.

Virtual Interface

A virtual interface is a point of entry for an on-premises data center to access a
VPC over a connection. A virtual interface associates a connection with a virtual
gateway and connects the virtual gateway to a remote gateway, enabling
communications between the on-premises data center and the VPC.

Virtual interfaces support static routing and BGP routing. During the
establishment of network connectivity, you can use BGP to connect on-premises
data centers to virtual gateways. BGP helps you build a hybrid cloud more
efficiently, flexibly, and reliably.

For details, see Virtual Interfaces.

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Direct Connect
Service Overview

5 Direct Connect Locations

5 Direct Connect Locations

A Direct Connect location provides access to Huawei Cloud in a region. Before
using Direct Connect to access Huawei Cloud, you need to obtain the details about
each location.

Direct Connect provides a number of locations for you to choose from. You can
request a port by creating a connection.

For more information, submit a service ticket or contact your Direct Connect
manager.

Table 5-1 Direct Connect locations in China

Region

Location

CN North-Beijing4 Beijing-Yatai

Beijing-
Jiuxianqiao

Carrier

Neutral

Dr. Peng

Beijing-Huitian

Neutral

Beijing-Zhongjin

Neutral

Address

Beijing Yatai

Beijing Universal
Creative Park
(UCP)

Beijing Huitian
Cloud Industrial
Park

Centrin Data in
Beijing Economic-
Technological
Development
Area

Langfang-
Wanguo

Neutral

Langfang GDS

Langfang-Range

China Telecom

Langfang-Huawei Huawei

Langfang Range
Information Port

Huawei
production base
in Langfang

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Direct Connect
Service Overview

5 Direct Connect Locations

Region

Location

Carrier

Address

Wuhan-Wugang

Neutral

Wuhan-Huawei

Huawei

CN North-
Ulanqab1

Ulanqab-Jining

Huawei

Ulanqab-
Meiguiying

Huawei

CN North3

Helin'geer-Nanqu Huawei

Helin'geer-Beiqu

Huawei

Helin'geer-Xiqu

Huawei

CN East-
Shanghai1

Suzhou-Wanguo

Neutral

Wuhan Iron &
Steel Data
Industrial Park

Wuhan Research
Center

Ulanqab Huawei
Data Center

Ulanqab
Meiguiying Base

Huawei Cloud
Data Center
Nanqu, Helin'geer

Huawei Cloud
Data Center
Beiqu, Helin'geer

Huawei Cloud
Data Center Xiqu,
Helin'geer

Suzhou GDS Data
Center

Suzhou-Guoke

China Unicom

SISDC

Suzhou-Huawei

Huawei

Suzhou-Kunhui

Neutral

Suzhou-Wujiang

China Mobile

Shanghai-
Wanguo

Neutral

Shanghai-Baoxin

China Mobile

Shanghai-
Guanghuan

Hangzhou-
Hanggang

Hangzhou-
Huawei

Neutral

Neutral

Huawei

Suzhou Research
Center

Suzhou Kunhui
Network

Suzhou Mobile
Data Center

Shanghai GDS
Data Center

Shanghai Baoxin
Data Center

Beijing Sinnet
Data Center

Hangzhou Iron &
Steel Cloud Data
Center

Hangzhou
Research Center

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Direct Connect
Service Overview

5 Direct Connect Locations

Region

CN East-
Shanghai2

Location

Shanghai-
Wanguo

Shanghai-
Guanghuan

Carrier

Neutral

Neutral

Shanghai-Baoxin

China Mobile

CN East2

Wuhu-Jiangbei

Huawei

Wuhu-Sanshan

Huawei

Wuhu-Zhijiao

Huawei

Address

Shanghai GDS
Data Center

Beijing Sinnet
Data Center

Shanghai Baoxin
Data Center

Wuhu Jiangbei
Data Center

Wuhu Sanshan
Data Center

Wuhu Zhijiao
Data Center

CN East-Qingdao

Qingdao-Jiaozhou Huawei

Jiaozhou Ka'aosi

CN South-
Guangzhou

Qingdao-
Hongdao

Guangzhou-
Yunpu

Guangzhou-
Huaxinyuan

Guangzhou-
Daxuecheng

Guangzhou-
Mingmei

Guangzhou-
Hualong

China Mobile

China Telecom

Neutral

Neutral

China Unicom

China Unicom

Shenzhen-Baode

Neutral

Shenzhen-Futian

Neutral

Hongdao Mobile
Data Center

Guangzhou Yunpu
Data Center

South China New
Materials
Innovation Park

Guangzhou
Higher Education
Mega Center

Guangzhou
Mingmei
Electronics

Weixin Innovation
Industrial Park

Shenzhen
Guanlan High-
Tech Park

Futian Zhongpeng
Cloud

Shenzhen-
Nanshan

Neutral

Nanshan SDGI

Shenzhen-Yifeng

Neutral

Dianda Guyuan
Industrial Park

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Direct Connect
Service Overview

5 Direct Connect Locations

Region

Location

Dongguan-
Tuanbowa

Carrier

Huawei

CN Southwest-
Guiyang1

Chengdu-Huawei

Huawei

Guiyang-Machang Huawei

Guiyang-Gui'an

China Mobile

Guiyang-Qixinghu Huawei

Huawei

China Telecom

China Mobile

CN-Hong Kong

Guiyang-
Gaoduanyuan

Hong Kong-Sha
Tin

HK-Sai Kung-
Mobile

Hong Kong-Sai
Kung-Global
Switch

HK-Tsuen Wan-
MEGA

China Telecom

Global Switch

Neutral

MEGA

Address

Huawei Base
(Dongguan
Songshan Lake)

Huawei Chengdu
Research Center

Gui'an Machang
Data Center

Gui'an New Area
Electron
Information
Industrial Park

Gui'an Huawei
Cloud Data
Center

Guiyang-High-End
Park

Sun Hung Kai
Logistics Centre

China Mobile
Global Network
Center

Table 5-2 Direct Connect locations outside China

Region

Location

AP-Bangkok

Bangkok-TRUE

Bangkok-STT

Bangkok-NTT

Carrier

TRUE

STT

NTT

AP-Singapore

Singapore-Equinix

Equinix

Singapore-Global Switch Global Switch

Singapore-1Net

Singapore-Singtel

1-Net

Singtel

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5 Direct Connect Locations

Region

Location

Carrier

AP-Jakarta

AP-Manila

Singapore-Telin3

Singapore-STT

Jakarta-DCI

Jakarta-EDGE

Manila-GBP

Telin

STT

DCI

EDGE

Globe

AF-Johannesburg

Nigeria-Lagos-Medallion Medallion

Manila-Digital Halo

Digital Halo

Johannesburg-IS
Parklands

Internet Solutions
Parklands

Johannesburg-Teraco

Teraco

Johannesburg-DPA

Vodacom

Johannesburg-ADC

Johannesburg-MTN

AF-Cairo

Cairo-Xceed

ADC

MTN

Xceed

LA-Mexico City1

Mexico-Ixtlahuaca

Ixtlahuaca

LA-Mexico City2

Mexico-Tultitlan

Mexico-Tultitlan

Mexico-Scala

LA-Sao Paulo1

Sao Paulo-Equinix

LA-Lima1

LA-Santiago

Sao Paulo-ODATA

Sao Paulo-Scala

Sao Paulo-VIVO

Lima-TIC

Santiago-Paine

Santiago-Claro

TR-Istanbul

TR-Istanbul

Istanbul-NGN

KIO MEX 5

KIO MEX 5

Scala

Equinix

OData

Scala

Telefonica

Telefonica

Paine

Claro

Turkcell

NGN

ME-Riyadh

Riyadh-STC Khurais

STC Khurais

Riyadh-Remal

Remal

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Direct Connect
Service Overview

6 Security

6 Security

6.1 Identity Authentication and Access Control

Identity Authentication

You can use Identity and Access Management (IAM) to control access to your
Direct Connect resources. IAM permissions define which actions on your cloud
resources are allowed or denied. After creating an IAM user, the administrator
needs to add it to a user group and grant the permissions required by Direct
Connect to the user group. Then, all users in this group automatically inherit the
granted permissions.

For details, see Permissions.

Access Control

A security group is a collection of access control rules for cloud resources, such as
cloud servers, containers, and databases, that have the same security protection
requirements and that are mutually trusted within a VPC. After a security group is
created, you can create various access rules for the security group, and these rules
will apply to all cloud resources added to this security group.

Your account automatically comes with a default security group. The default
security group allows all outbound traffic, denies all inbound traffic, and allows all
traffic between cloud resources in the group. Your cloud resources in this security
group can communicate with each other already without adding additional rules.
For details about the default security group rules, see Default Security Groups
and Security Group Rules.

In addition, Huawei Cloud allows you to manage security groups and security
group rules, including

●

●

Creating, viewing, deleting, modifying, cloning, and adding security groups

Adding, copying, modifying, deleting, importing, and exporting security group
rules

● Quickly adding multiple security group rules

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6 Security

●

●

Viewing and changing security groups of ECSs

Adding cloud resources to or removing cloud resources from security groups

You can define access control rules for a security group. Then ECSs that will be
added to this security group will be protected. For details, see Security Group.

6.2 Auditing and Logging

Cloud Trace Service (CTS) is a log audit service for Huawei Cloud security. It allows
you to collect, store, and query cloud resource operation records. You can use
these records to perform security analysis, audit compliance, track resource
changes, and locate faults.

After CTS is enabled, traces can be generated for operations performed on the
Direct Connect console.

●

●

●

For details about how to enable and configure CTS, see Enabling CTS.

For details about key operations of Direct Connect, see Key Operations
Recorded by CTS.

For details about traces, see Viewing Traces.

6.3 Monitoring Security Risks

Cloud Eye is a monitoring service provided by Huawei Cloud. It provides
capabilities like real-time monitoring, timely alarm reporting, resource groups, and
website monitoring. Cloud Eye enables you to keep track of your resource usages
and service statuses on the cloud, and quickly respond to exceptions to ensure
that services run smoothly.

Monitoring is critical to ensuring the performance, reliability, and availability of
Direct Connect. Cloud Eye automatically monitors your connections in real time,
collects and displays monitoring data in a convenient, visualized manner, and
allows you to manage alarms and notifications, helping you watch your
connection performance.

For details about supported metrics and how to create alarm rules, see
Monitoring.

6.4 Certificates

Compliance Certificates

Huawei Cloud services and platforms have obtained various security and
compliance certifications from authoritative organizations, such as International
Organization for Standardization (ISO). You can download them from the
console.

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6 Security

Figure 6-1 Downloading compliance certificates

Resource Center

Huawei Cloud also provides the following resources to help users meet compliance
requirements. For details, see Resource Center.

Figure 6-2 Resource center

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Direct Connect
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7 Permissions

7 Permissions

If you need to assign different permissions to employees in your enterprise to
access your Direct Connect resources, Identity and Access Management (IAM) is a
good choice for fine-grained permissions management. IAM provides identity
authentication, permissions management, and access control, helping you securely
access your cloud resources. If your HUAWEI ID does not require IAM for
permissions management, you can skip this section.

IAM is a free service. You pay only for the resources in your account.

With IAM, you can control access to specific cloud resources. For example, some
software developers in your enterprise need to use Direct Connect but should not
be allowed to delete other Direct Connect resources or perform any other high-
risk operations. In this scenario, you can create IAM users for the software
developers and grant them only the required permissions.

IAM supports role/policy-based authorization and identity policy-based
authorization.

The following table describes the differences between the two authorization
models.

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7 Permissions

Table 7-1 Differences between role/policy-based and identity policy-based
authorization

Name Authoriz

Role/
Policy

ation
Using

User-
permissi
on-
authoriz
ation
scope

Policies

Identit
y
policy

Permissio
ns

Authorization
Method

Scenario

● Syste
m-
define
d roles

● Syste
m-
define
d
policie
s

● Custo
m
policie
s

● Syste
m-
define
d
identit
y
policie
s

● Custo
m
policie
s

Assigning
roles or
policies to
principals

To authorize a user, you need
to add it to a user group first
and then specify the scope of
authorization. It is hard to
provide fine-grained
permissions control using
authorization by user groups
and a limited number of
condition keys. This method is
suitable for small- and
medium-sized enterprises.

● Assigning
identity
policies to
principals

● Attaching
identity
policies to
principals

You can authorize a user by
attaching an identity policy to
it. User-specific authorization
and a variety of key
conditions allow for more
fine-grained permissions
control. However, this model
can be hard to set up. It
requires a certain amount of
expertise and is suitable for
medium- and large-sized
enterprises.

Assume that you want to grant IAM users the permission to create ECSs in CN
North-Beijing4 and OBS buckets in CN South-Guangzhou. With role/policy-based
authorization, the administrator needs to create two custom policies and attach
both to the IAM users. With identity policy-based authorization, the administrator
only needs to create one custom policy and configure the condition key
g:RequestedRegion for the policy, and then attach the policy to the principals or
grant the principals the access permissions to the specified regions. Identity policy-
based authorization is more flexible than role/policy-based authorization.

Policies and actions in the two authorization models are not interoperable. You are
advised to use the role/policy-based authorization model. For details about
system-defined permissions, see Role/Policy-based Authorization and Identity
Policy-based Authorization.

For more information about IAM, see IAM Service Overview.

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Direct Connect
Service Overview

Role/Policy-based Authorization

7 Permissions

Direct Connect supports role/policy-based authorization. By default, new IAM
users do not have permissions assigned. You need to add a user to one or more
groups, and attach permissions policies or roles to these groups. Users inherit
permissions from the groups to which they are added and can perform specified
operations on cloud services based on the permissions.

Direct Connect is a project-level service deployed and accessed in specific physical
regions. When you set Scope to Region-specific projects and select the specified
projects (for example, ap-southeast-2) in the specified regions (for example, AP-
Bangkok), the users only have permissions for VPCEP resources in the selected
projects. If you set Scope to All resources, the users have permissions for VPCEP
resources in all region-specific projects. When accessing Direct Connect, the users
need to switch to a region where they have been authorized to use this service.

Table 7-2 lists all the system-defined policies for Direct Connect in role/policy-
based authorization. System-defined policies in the two authorization models are
not interoperable.

Table 7-2 Direct Connect permissions

Role/Policy

Description

Direct Connect
Administrator

DCaaS Partner

Administrator
permissions for Direct
Connect. Users with
these permissions can
perform all operations
on Direct Connect.

To have these
permissions, users
must also have the
Tenant Guest and
VPC Administrator
permissions.

Typ
e

Syst
em
-
defi
ned
role

Dependency

Tenant Guest and VPC
Administrator

● VPC Administrator:

project-level policy, which
must be assigned in the
same project

● Tenant Guest: project-
level policy, which must
be assigned in the same
project

Direct Connect partner
permissions. Users
who have these
permissions can create
hosted operations for
others.

Syst
em
-
defi
ned
role

To have these
permissions, users
must also have the
Tenant Guest and
VPC Administrator
permissions.

Tenant Guest and VPC
Administrator

● VPC Administrator:

project-level policy, which
must be assigned in the
same project

● Tenant Guest: project-
level policy, which must
be assigned in the same
project

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Direct Connect
Service Overview

7 Permissions

Role/Policy

Description

DCAAS FullAccess Permissions: all

permissions for Direct
Connect

Scope: project-level
service

Permissions: read-only
permissions for Direct
Connect

Scope: project-level
service

DCAAS
ReadOnlyAccess

Dependency

None

None

Typ
e

Syst
em
-
defi
ned
poli
cy

Syst
em
-
defi
ned
poli
cy

Table 7-3 lists common operations supported by each system-defined policy for
Direct Connect.

Table 7-3 Common operations supported by each system-defined policy

Operation

Creating a
connection

Viewing a
connection

Modifying a
connection

Deleting a
connection

Creating a
virtual
gateway

Viewing a
virtual
gateway

Modifying a
virtual
gateway

Direct
Connect
Administrato
r

DCaaS
Partner

DCAAS
FullAccess

DCAAS
ReadOnlyAcc
ess

√

√

√

√

√

√

√

√

√

√

√

√

√

√

√

√

√

√

√

√

√

×

√

×

×

×

√

×

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Direct Connect
Service Overview

Direct
Connect
Administrato
r

DCaaS
Partner

DCAAS
FullAccess

7 Permissions

DCAAS
ReadOnlyAcc
ess

√

√

√

√

√

√

√

√

√

√

√

√

√

√

√

√

√

√

√

√

√

√

√

√

√

√

√

√

√

√

√

√

√

√

√

√

√

√

√

×

×

√

×

×

×

√

×

×

×

√

×

×

Operation

Deleting a
virtual
gateway

Creating a
global DC
gateway

Viewing a
global DC
gateway

Modifying a
global DC
gateway

Deleting a
global DC
gateway

Creating a
virtual
interface

Viewing a
virtual
interface

Modifying a
virtual
interface

Deleting a
virtual
interface

Creating an
operations
connection

Viewing an
operations
connection

Modifying an
operations
connection

Deleting an
operations
connection

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Direct Connect
Service Overview

Direct
Connect
Administrato
r

DCaaS
Partner

DCAAS
FullAccess

7 Permissions

DCAAS
ReadOnlyAcc
ess

√

√

√

√

√

√

√

√

√

√

√

√

×

√

×

×

Operation

Creating a
hosted
connection

Viewing a
hosted
connection

Modifying a
hosted
connection

Deleting a
hosted
connection

Roles or Policies that the Direct Connect Console Depends on

Table 7-4 Roles or policies required for operations on the Direct Connect console

Function

Connect
gateways

Dependent Cloud
Service/Resource

Elastic IP

Virtual
interfaces

Roles or Policies Required

You need to configure the EIP
ReadOnlyAccess permission when
you perform the following operations
on connect gateways on the Direct
Connect console:

● In the connect gateway list, view
the location, bind global EIPs to a
connect gateway, and manage the
global EIPs bound to a connect
gateway.

● On the connect gateway details
page, view all the global EIPs,
binding or unbinding global EIPs to
the connect gateway.

When deleting a virtual interface on
the Direct Connect console, you need
the EIP ReadOnlyAccess permission.

Identity Policy-based Authorization

Direct Connect supports identity policy-based authorization. Table 7-5 lists all the
system-defined policies for Direct Connect with identity policy-based

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Direct Connect
Service Overview

7 Permissions

authorization. System-defined policies in identity policy-based authorization are
not interoperable with those in role/policy-based authorization.

Table 7-5 System-defined policies supported by Direct Connect

Policy Name

Description

Policy Type

DCAASFullAccessPolicy

Full permissions for Direct
Connect

System-defined identity
policy

DCAASReadOnlyPolicy

Read-only permissions for
Direct Connect

System-defined identity
policy

Table 7-6 lists common operations supported by system-defined identity policies
for Direct Connect.

Table 7-6 Common operations supported by system-defined identity policies

DCAASFullAccessPolicy

DCAASReadOnlyPolicy

Operation

Creating a
connection

√

Viewing a connection √

Modifying a
connection

Deleting a
connection

Creating a virtual
gateway

Viewing a virtual
gateway

Modifying a virtual
gateway

Deleting a virtual
gateway

Creating a global DC
gateway

Viewing a global DC
gateway

Modifying a global
DC gateway

Deleting a global DC
gateway

√

√

√

√

√

√

√

√

√

√

×

√

×

×

×

√

×

×

×

√

×

×

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Direct Connect
Service Overview

7 Permissions

Operation

DCAASFullAccessPolicy

DCAASReadOnlyPolicy

Creating a virtual
interface

Viewing a virtual
interface

Modifying a virtual
interface

Deleting a virtual
interface

Creating an
operations
connection

Viewing an
operations
connection

Modifying an
operations
connection

Deleting an
operations
connection

Creating a hosted
connection

Viewing a hosted
connection

Modifying a hosted
connection

Deleting a hosted
connection

√

√

√

√

√

√

√

√

√

√

√

√

×

√

×

×

×

√

×

×

×

√

×

×

Helpful Links

●

IAM Service Overview

● Using IAM to Grant Access to Direct Connect

●

Identity Policy-based Authorization

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Direct Connect
Service Overview

8 Notes and Constraints

8 Notes and Constraints

Quotas

Resource

Default Quota

How to Increase Quota

Number of connections
that can be created by
an account in each
region

Number of global DC
gateways that can be
created by an account in
each region

Number of virtual
interfaces that can be
created by an account in
each region

Number of local subnets
for a virtual gateway

Number of routes for
BGP sessions on a virtual
interface

Number of remote
subnets for a virtual
interface

10

5

50

50

100

50

Submit a service ticket.

Submit a service ticket.

Submit a service ticket.

Increasing the quota is
not allowed.

Submit a service ticket.

Submit a service ticket.

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.

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Direct Connect
Service Overview

8 Notes and Constraints

●

If your workloads have demanding requirements 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.

For details about the locations in each region, see Direct Connect Locations.

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 purchase 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.

By default, Direct Connect is not interconnected with Enterprise Switch. To
access Enterprise Switch using Direct Connect, submit a service ticket.

● 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,
see submit a service ticket.

●

A virtual gateway can be associated with only two different devices.

Network Requirements

●

●

●

●

●

●

Your on-premises network must use a single-mode fiber with a 1GE, 10GE,
40GE, or 100GE optical module to connect to the access device on Huawei
Cloud. In addition, key parameters such as the LC, wavelength, and distance
must be consistent with those of the access device on Huawei Cloud.
Examples of optical module parameters: 1 GE, LC single-mode, 1,310 nm, and
10 km

Auto-negotiation for the ports must be disabled. Port speed and full-duplex
mode must be manually configured.

802.1Q VLAN encapsulation must be supported on all devices of the entire
connection, including intermediate devices.

Your device must support Border Gateway Protocol (BGP) and BGP MD5
authentication or static routing.

(Optional) You can configure Bidirectional Forwarding Detection (BFD) on the
network.

A physical connection supports jumbo frames with a default maximum
transmission unit (MTU) size of 8,500 bytes. If you need to configure a larger
MTU, contact the Direct Connect manager.

If you ping the IP address of the local gateway of a Direct Connect connection
for connectivity test, the MTU is 1,500 bytes.

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Direct Connect
Service Overview

8 Notes and Constraints

●

Private IP addresses are recommended for cloud and on-premises servers, and
the IP address ranges used for communications cannot overlap.

Construction Notes

●

Your construction company must comply with the regulations presented by
the equipment room provider 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 provider.

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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Direct Connect
Service Overview

9 Direct Connect and Other Services

9 Direct Connect and Other Services

Figure 9-1 Direct Connect and other services

Table 9-1 Related services

Cloud
Service

Interaction

Reference

Virtual
Private Cloud
(VPC)

Your on-premises data center can
access the VPCs through Direct
Connect.

Creating a VPC with a
Subnet

You can use VPC Peering to connect
the VPC your on-premises data center
is accessing to other VPCs in the same
region so that your on-premises data
center can access all these VPCs.

Connecting an On-
Premises Data Center
to Multiple VPCs in
the Same Region
Using Direct Connect
and VPC Peering

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Direct Connect
Service Overview

9 Direct Connect and Other Services

Cloud
Service

Enterprise
Router

NAT
Gateway

VPC
Endpoint
(VPCEP)

Cloud Eye

Identity and
Access
Management
(IAM)

Interaction

Reference

You can connect your on-premises
data center to an enterprise router, so
that your on-premises data center can
access the VPCs attached to the
enterprise router.

-

On-premises servers can share a NAT
gateway to access the Internet or
provide services that are accessible
from the Internet.

A VPC endpoint can connect your on-
premises data center to a cloud
service through a VPN or Direct
Connect connection over a private
network.

Cloud Eye monitors Direct Connect
resources and allows you to view
visualized graphs.

You can grant different permissions
for users to control access to Direct
Connect resources.

NAT Gateway

Configuring a VPC
Endpoint for Accessing
the Private IP Address
of OBS

Viewing Metrics

Identity and Access
Management

Cloud Trace
Service (CTS)

You can record operations performed
on Direct Connect.

Key Operations
Recorded by CTS

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Direct Connect
Service Overview

10 Basic Concepts

10 Basic Concepts

Connection

A connection is a dedicated channel that connects your on-premises data center
to the cloud. Connections are more stable, reliable, and secure than Internet-based
connections, and provide up to 100 Gbit/s of bandwidth. Direct Connect provides
ports only. After you request a connection, you need to work with the carrier and
Huawei Cloud to establish network connectivity between your on-premises data
center and the cloud.

Direct Connect provides standard connections and hosted connections.

●

Standard connection: A standard connection provides an exclusive port. You
can create standard connections on the management console. To improve
reliability, you can create multiple connections terminated at different
locations and allow them to serve as backups for each other.

You can choose self-service connections or full-service connections.

–

–

Self-service connection: Huawei Cloud only provides the port. You need to
create a connection on the console, and lease a line from a carrier.

Full-service connection: You only need to create a connection on the
console, and Huawei Cloud will complete all operations required for
network connectivity.

Figure 10-1 shows an example of how standard connections work.

Figure 10-1 Accessing the cloud using standard connections

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Direct Connect
Service Overview

10 Basic Concepts

● Hosted connection: If you use a hosted connection to access the cloud, the
port you use is shared with other users. These connections are created by a
carrier (a partner of Huawei Cloud), who allocates the required VLAN and
bandwidth for your connection. Only one virtual interface can be associated
with each hosted connection.

If you are a partner, you can request operations connections. If you are a
common user, you can purchase a host connection from your partner. Hosted
connections must be hosted on operations connections, and your partner will
allocate VLAN and bandwidth resources to the connection.

Figure 10-2 shows an example of how hosted connections work.

Figure 10-2 Accessing the cloud using hosted connections

Connections support redundant configuration. If there are two connections
terminated at different locations in the same region, they can work in an active/
standby pair to back each other up. If one connection becomes faulty, the other
will take over, ensuring stable services.

Virtual Gateway

A virtual gateway is a logical gateway that enables an on-premises data center
to access a VPC over a connection. To enable an on-premises data center to access
a VPC over a connection, you can associate the VPC with a virtual gateway. To
access other VPCs, you can use VPC Peering or Cloud Connect to connect the VPC
your on-premises data center is accessing to these VPCs.

A virtual gateway can only have one VPC associated. An on-premises data center
can access the same VPC over two connections through one virtual gateway.

Global DC Gateway

A global DC gateway enables your on-premises data center to access VPCs in
multiple regions so you can use a single connection to provide high-speed access
to cloud compute and storage resources in any region.

A global DC gateway can be attached to different enterprise routers to build a
central network so that your on-premises data center can access the VPCs in
different regions over the Huawei backbone network. This reduces network
latency, simplifies network topology, and improves O&M efficiency.

A global DC gateway can only be associated with connections terminated at the
same Direct Connect location. If there are multiple connections terminated at

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Direct Connect
Service Overview

10 Basic Concepts

different Direct Connect locations, you need to create multiple global DC
gateways.

Virtual Interface

A virtual interface is a point of entry for an on-premises data center to access a
VPC over a connection. A virtual interface associates a connection with a virtual
gateway and connects the virtual gateway to a remote gateway, enabling
communications between the on-premises data center and the VPC.

Virtual interfaces support static routing and BGP routing. You can use BGP to
connect your on-premises data center to the virtual gateway over a connection.
BGP helps you build a hybrid cloud more efficiently, flexibly, and reliably.

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Direct Connect
Service Overview

11 Region and AZ

11 Region and AZ

Concept

A region and availability zone (AZ) identify the location of a data center. You can
create resources in a specific region and AZ.

●

●

Regions are divided based on geographical location and network latency.
Public services, such as Elastic Cloud Server (ECS), Elastic Volume Service
(EVS), Object Storage Service (OBS), Virtual Private Cloud (VPC), Elastic IP
(EIP), and Image Management Service (IMS), are shared within the same
region. Regions are classified into universal regions and dedicated regions. A
universal region provides universal cloud services for common tenants. A
dedicated region provides specific services for specific tenants.

An AZ contains one or more physical data centers. Each AZ has independent
cooling, fire extinguishing, moisture-proof, and electricity facilities. Within an
AZ, computing, network, storage, and other resources are logically divided
into multiple clusters.

Figure 11-1 shows the relationship between regions and AZs.

Figure 11-1 Regions and AZs

Huawei Cloud provides services in many regions around the world. You can select
a region and an AZ based on requirements. For more information, see Huawei
Cloud Global Products and Services.

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Direct Connect
Service Overview

Selecting a Region

11 Region and AZ

When selecting a region, consider the following factors:

●

Location

It is recommended that you select the closest region for lower network
latency and quick access.

–

–

–

If your target users are in Asia Pacific (excluding the Chinese mainland),
select the CN-Hong Kong, AP-Bangkok, or AP-Singapore region.

If your target users are in Africa, select the AF-Johannesburg region.

If your target users are in Latin America, select the LA-Santiago region.

NO TE

The LA-Santiago region is located in Chile.

●

Resource price

Resource prices may vary in different regions. For details, see Product Pricing
Details.

Selecting an AZ

When deploying resources, consider your applications' requirements on disaster
recovery (DR) and network latency.

●

●

For high DR capability, deploy resources in different AZs within the same
region.

For lower network latency, deploy resources in the same AZ.

Regions and Endpoints

Before you use an API to call resources, specify its region and endpoint. For more
details, see Regions and Endpoints.

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