- What's New
- Function Overview
- Service Overview
- Billing
- Getting Started
-
User Guide
- Permissions Management
- Enterprise Routers
- Attachments
- Route Tables
- Associations
- Propagations
- Routes
-
Routing Control
-
Route Policies
- Route Policy Overview
- Creating a Route Policy
- Associating a Route Policy with an Enterprise Router
- Changing the Route Policy Associated with an Enterprise Router
- Disassociating a Route Policy from an Enterprise Router
- Modifying a Route Policy
- Viewing a Route Policy
- Deleting a Route Policy
- Adding a Policy Node to a Route Policy
- Modifying a Policy Node in a Route Policy
- Exporting Policy Nodes in a Route Policy
- Viewing a Policy Node in a Route Policy
- Deleting a Policy Node from a Route Policy
-
IP Prefix Lists
- IP Prefix List Overview
- Creating an IP Prefix List
- Modifying the Name of an IP Prefix List
- Viewing an IP Prefix List
- Deleting an IP Prefix List
- Adding a Prefix Rule to an IP Address Prefix List
- Modifying an IP Prefix Rule in an IP Prefix List
- Exporting Prefix Rules in an IP Prefix List
- Viewing a Prefix Rule in an IP Prefix List
- Deleting a Prefix Rule from an IP Prefix List
-
AS_Path Lists
- AS_Path List Overview
- Creating an AS_Path List
- Modifying the Name of an AS_Path List
- Viewing an AS_Path List
- Deleting an AS_Path List
- Adding an AS_Path Filter to an AS_Path List
- Exporting AS_Path Filters in an AS_Path List
- Viewing an AS_Path Filter in an AS_Path List
- Deleting an AS_Path Filter from an AS_Path List
-
Route Policies
- Sharing
- Flow Logs
- Monitoring and Auditing
- Tags
- Quotas
-
Best Practices
- Summary on Enterprise Router Best Practices
- Connecting VPCs Across Regions Using Enterprise Router and Central Network
- Using Enterprise Router to Isolate VPCs in the Same Region
- Using a Third-Party Firewall to Protect VPCs Connected by Enterprise Routers
- Enabling an On-Premises Data Center to Access Service VPCs Using an Enterprise Router and Transit VPC
- Setting Up a Hybrid Cloud Network Using Enterprise Router and Direct Connect Global DC Gateway
-
Setting Up a Hybrid Cloud Network Using Enterprise Router and a Pair of Direct Connect Connections (Global DC Gateway)
- Overview
- Network and Resource Planning
- Process of Setting Up a Hybrid Cloud Network Using Enterprise Router and a Pair of Direct Connect Connections (Global DC Gateway)
- Procedure for Setting Up a Hybrid Cloud Network Using Enterprise Router and a Pair of Direct Connect Connections (Global DC Gateway)
-
Setting Up a Hybrid Cloud Network Using Enterprise Router and a Pair of Active/Standby Direct Connect Connections (Global DC Gateway)
- Overview
- Network and Resource Planning
- Process of Setting Up a Hybrid Cloud Network Using Enterprise Router and a Pair of Active/Standby Direct Connect Connections (Global DC Gateway)
- Procedure for Setting Up a Hybrid Cloud Network Using Enterprise Router and a Pair of Active/Standby Direct Connect Connections (Global DC Gateway)
- Setting Up a Hybrid Cloud Network Using Enterprise Router, VPN, and Direct Connect (Global DC Gateway)
- Setting Up a Hybrid Cloud Network Using Enterprise Router and Direct Connect (Virtual Gateway)
- Setting Up a Hybrid Cloud Network Using Enterprise Router and a Pair of Direct Connect Connections (Virtual Gateway)
- Setting Up a Hybrid Cloud Network Using Enterprise Router, VPN, and Direct Connect (Virtual Gateway)
- Allowing VPCs to Share an EIP to Access the Internet Using Enterprise Router and NAT Gateway
- Using Enterprise Router to Migrate the Network Set Up Through VPC Peering
- Using Enterprise Router to Migrate the Network Set Up Through Direct Connect (Global DC Gateway)
- Using Enterprise Router and Central Network to Migrate the Network Set Up Through a Cloud Connection
- API Reference
- FAQs
-
More Documents
-
User Guide (ME-Abu Dhabi Region)
- Service Overview
- Getting Started
- Enterprise Routers
- Attachments
- Route Tables
- Associations
- Propagations
- Routes
- Sharing
- Flow Logs
- Monitoring
- Interconnecting with CTS
- Permissions Management
- Tags
- Quotas
- FAQ
- Change History
-
User Guide (Ankara Region)
- Service Overview
- Getting Started
- Permissions Management
- Enterprise Routers
- Attachments
- Route Tables
- Associations
- Propagations
- Routes
- Sharing
- Flow Logs
- Monitoring
- Quotas
- FAQ
- Change History
- API Reference (Ankara Region)
-
User Guide (ME-Abu Dhabi Region)
- General Reference
Copied.
How Enterprise Routers Work
You can attach your network connections to an enterprise router to quickly construct diversified networks and meet various service requirements. Figure 1 shows the process of using an enterprise router, including creating an enterprise router, adding attachments to the enterprise router, and configure routes.
- VPC attachment: Attach a VPC from the same region as that of an enterprise router.
- Virtual gateway attachment: Attach a Direct Connect virtual gateway from the same region as that of an enterprise router.
- VPN gateway attachment: Attach a VPN gateway from the same region as that of an enterprise router.
Figure 2 shows how an enterprise router works. Table 2 describes the traffic flows in detail if an enterprise router is used for networking.
No. |
Route |
Description |
---|---|---|
1 |
Request from VPC 1 to Direct Connect virtual gateway |
After receiving requests from VPC 1 to the virtual gateway, enterprise router 1 searches the default route table for the route to the virtual gateway and forwards the requests through this route. |
Response from Direct Connect virtual gateway to VPC 1 |
After receiving responses from the virtual gateway to VPC 1, enterprise router 1 searches the default route table for the route to VPC 1 and forwards the responses through this route. |
|
2 |
Request from VPC 2 to Direct Connect virtual gateway |
Enterprise router 1 cannot forward requests from VPC 2 to the virtual gateway because the custom route table of enterprise router 1 that is associated with VPC 2 does not contain the route to this virtual gateway. |
No. |
Action |
Description |
---|---|---|
1 |
Add attachments to the enterprise router. |
Attach network instances to enterprise router 1 in region A.
|
2 |
Associate the attachments with the route tables of the enterprise router. Each attachment can only be associated with one route table. |
|
3 |
Create propagation for the attachments to propagate the routes to the enterprise router's route tables. You can create multiple propagation records for the same attachment. |
Attachments
If you want to attach a network instance to an enterprise router, you need to add an attachment of a specific type to the enterprise router. The attachment type varies according to the network instance, as listed in Table 3.
Route Tables
Route tables are used by enterprise routers to forward packets. Route tables contain associations, propagations, and routes. Route tables are classified into custom and default route tables, as detailed in Table 4.
Route Table |
Description |
---|---|
Custom route table |
You can create multiple custom route tables on an enterprise router and use different routes for flexible communication and isolation between network instances. |
Default route table |
If you enable Default Route Table Association and Default Route Table Propagation, the system then automatically associates and propagates new attachments with the default route table. You can specify a custom route table as the default route table. If you do not specify any route table as the default route table, the system automatically creates a default route table. |
Associations
- Packet forwarding: Packets from the attachment are forwarded through the routes specified in the associated route table.
- Route propagation: The routes in the associated route tables are automatically propagated to the route table of the attachment.
Route Propagation
You can create a propagation for each attachment to propagate routes to one or more route tables on an enterprise router.
Routes
Routes are used to forward packets. A route contains information such as the destination, next hop, and route type. Table 7 describes the routes of different types.
Feedback
Was this page helpful?
Provide feedbackThank you very much for your feedback. We will continue working to improve the documentation.See the reply and handling status in My Cloud VOC.
For any further questions, feel free to contact us through the chatbot.
Chatbot