Compute
Elastic Cloud Server
Huawei Cloud Flexus
Bare Metal Server
Auto Scaling
Image Management Service
Dedicated Host
FunctionGraph
Cloud Phone Host
Huawei Cloud EulerOS
Networking
Virtual Private Cloud
Elastic IP
Elastic Load Balance
NAT Gateway
Direct Connect
Virtual Private Network
VPC Endpoint
Cloud Connect
Enterprise Router
Enterprise Switch
Global Accelerator
Management & Governance
Cloud Eye
Identity and Access Management
Cloud Trace Service
Resource Formation Service
Tag Management Service
Log Tank Service
Config
OneAccess
Resource Access Manager
Simple Message Notification
Application Performance Management
Application Operations Management
Organizations
Optimization Advisor
IAM Identity Center
Cloud Operations Center
Resource Governance Center
Migration
Server Migration Service
Object Storage Migration Service
Cloud Data Migration
Migration Center
Cloud Ecosystem
KooGallery
Partner Center
User Support
My Account
Billing Center
Cost Center
Resource Center
Enterprise Management
Service Tickets
HUAWEI CLOUD (International) FAQs
ICP Filing
Support Plans
My Credentials
Customer Operation Capabilities
Partner Support Plans
Professional Services
Analytics
MapReduce Service
Data Lake Insight
CloudTable Service
Cloud Search Service
Data Lake Visualization
Data Ingestion Service
GaussDB(DWS)
DataArts Studio
Data Lake Factory
DataArts Lake Formation
IoT
IoT Device Access
Others
Product Pricing Details
System Permissions
Console Quick Start
Common FAQs
Instructions for Associating with a HUAWEI CLOUD Partner
Message Center
Security & Compliance
Security Technologies and Applications
Web Application Firewall
Host Security Service
Cloud Firewall
SecMaster
Anti-DDoS Service
Data Encryption Workshop
Database Security Service
Cloud Bastion Host
Data Security Center
Cloud Certificate Manager
Edge Security
Managed Threat Detection
Blockchain
Blockchain Service
Web3 Node Engine Service
Media Services
Media Processing Center
Video On Demand
Live
SparkRTC
MetaStudio
Storage
Object Storage Service
Elastic Volume Service
Cloud Backup and Recovery
Storage Disaster Recovery Service
Scalable File Service Turbo
Scalable File Service
Volume Backup Service
Cloud Server Backup Service
Data Express Service
Dedicated Distributed Storage Service
Containers
Cloud Container Engine
SoftWare Repository for Container
Application Service Mesh
Ubiquitous Cloud Native Service
Cloud Container Instance
Databases
Relational Database Service
Document Database Service
Data Admin Service
Data Replication Service
GeminiDB
GaussDB
Distributed Database Middleware
Database and Application Migration UGO
TaurusDB
Middleware
Distributed Cache Service
API Gateway
Distributed Message Service for Kafka
Distributed Message Service for RabbitMQ
Distributed Message Service for RocketMQ
Cloud Service Engine
Multi-Site High Availability Service
EventGrid
Dedicated Cloud
Dedicated Computing Cluster
Business Applications
Workspace
ROMA Connect
Message & SMS
Domain Name Service
Edge Data Center Management
Meeting
AI
Face Recognition Service
Graph Engine Service
Content Moderation
Image Recognition
Optical Character Recognition
ModelArts
ImageSearch
Conversational Bot Service
Speech Interaction Service
Huawei HiLens
Video Intelligent Analysis Service
Developer Tools
SDK Developer Guide
API Request Signing Guide
Terraform
Koo Command Line Interface
Content Delivery & Edge Computing
Content Delivery Network
Intelligent EdgeFabric
CloudPond
Intelligent EdgeCloud
Solutions
SAP Cloud
High Performance Computing
Developer Services
ServiceStage
CodeArts
CodeArts PerfTest
CodeArts Req
CodeArts Pipeline
CodeArts Build
CodeArts Deploy
CodeArts Artifact
CodeArts TestPlan
CodeArts Check
CodeArts Repo
Cloud Application Engine
MacroVerse aPaaS
KooMessage
KooPhone
KooDrive

Overview

Updated on 2024-11-21 GMT+08:00

Scenario

Before enterprise routers are available, VPC peering connections are used to connect VPCs in the same region. VPC peering connections are suitable for simple networks because every two VPCs need a VPC peering connection. In a complex network, a large number of VPC peering connections are required, which is inconvenient for network expansion and increases O&M costs.

As a high-performance centralized router on the cloud, an enterprise router can connect multiple VPCs in the same region, making network expansion and O&M easier.

If you have a lot of VPCs that are connected by VPC peering connections, you can use an enterprise router to replace the VPC peering connections.

NOTE:

For more information about Enterprise Router, see Enterprise Router Service Overview.

Architecture

There are three VPCs (VPC-A, VPC-B, and VPC-C) in region A and connected over VPC peering connections. To improve network scalability and reduce O&M costs, you can use an enterprise router to connect the three VPCs.

This process consists of three phases: before migration, during migration, and after migration. The details are as follows:
  1. Before migration: VPC-A, VPC-B, and VPC-C are connected over VPC peering connections.
  2. During migration: VPC-A, VPC-B, and VPC-C will be connected through both VPC peering connections and an enterprise router. Large and small CIDR blocks are used to ensure that the routes of VPC peering connections and the enterprise router do not conflict.
  3. After migration: VPC-A, VPC-B, and VPC-C can communicate with each other through the enterprise router. You can delete all VPC peering connections.
Figure 1 Migrating a network set up through VPC peering connections

Advantages

Enterprise Router simplifies the networking structure, improves the network scalability, and reduces O&M costs.

As shown in Figure 2, the network set up through VPC peering connections is more complex than that set up using an enterprise router. For example, if you have six VPCs, you need to create 15 VPC peering connections. However, you only need one enterprise router to connect all your VPCs. The networking is simple and clear, making O&M and network expansion easier.

Figure 2 Network that you set up through VPC peering connections vs. Network that you set up using an enterprise router

Notes and Constraints

  • If the VPCs connected by VPC peering connections are from different accounts, you can use the sharing function of the enterprise router to connect the VPCs of different accounts through one enterprise router.
  • Using Enterprise Router to migrate a network set up through VPC Peering may interrupt services. Submit a service ticket to evaluate the migration solution.

    If a service VPC is being used by ELB, VPC Endpoint, NAT Gateway (private NAT gateway), Distributed Cache Service (DCS), or hybrid DNS, this VPC cannot be attached to an enterprise router.

For details about constraints on enterprise routers, see Notes and Constraints.

We use cookies to improve our site and your experience. By continuing to browse our site you accept our cookie policy. Find out more

Feedback

Feedback

Feedback

0/500

Selected Content

Submit selected content with the feedback