Updated on 2026-07-24 GMT+08:00

ER Instances Deployed in Multiple AZs

Rule Details

Table 1 Rule details

Parameter

Description

Rule Name

er-multiple-az-check

Identifier

ER Instances Deployed in Multiple AZs

Description

If an enterprise router is not deployed in multiple AZs, it is non-compliant.

Tag

er

Trigger Type

Configuration change

Filter Type

er.instances

Rule Parameters

None

Application Scenarios

We recommend you to select two or more AZs. The enterprise router will be deployed in both AZs that work in active-active mode, ensuring reliability and disaster recovery.

If the enterprise router is deployed in multiple AZs, traffic in an AZ will be preferentially transmitted to the enterprise router in the same AZ to reduce latency.

Solution

When creating an enterprise router, select multiple AZs.

Rule Logic

  • If an enterprise router is not deployed in multiple AZs, the enterprise router is non-compliant.
  • If an enterprise router is deployed in multiple AZs, the enterprise router is compliant.