Note the following limits before you use the Express Connect service.

Item Quota Can I apply for an increase to the quota?
The maximum number of physical connections that an account can establish at an access point 2 Yes. You can apply for an increase to the quota by using the quota management function.
The maximum number of Virtual Border Routers (VBRs) that can be created in a physical connection 5 Yes. You can apply for an increase to the quota by using the quota management function.
The maximum number of idle VBRs (VBRs without interfaces) under an account 5 No.
The maximum number of VBRs that an account can create for other accounts. 2 No.
The maximum number of route entries that can be added to a VBR 48 Yes. You can apply for an increase to the quota by using the quota management function.
The maximum number of BGP route entries that can be accepted by a VBR 110 Yes. You can apply for an increase to the quota by opening a ticket.
The number of BGP route entries that can be advertised on each VBR. 10 Yes. You can apply for an increase to the quota by using the quota management function.
We recommend that you use private CIDR blocks for a VBR and VPC to communicate with each other. The CIDR blocks cannot conflict with each other.
If you use dual physical connections to access Alibaba Cloud, you must configure health checks so that traffic is distributed to the standby link when the active link fails.