# Usage Restrictions

## Supported Regions
PLVR is a regional-level product, and PLVR instances can only be used within the opened regions.

| **Region** | Supported Locations                                              |
| :--------- | :--------------------------------------------------------------- |
| **Mainland** | North China (Beijing 2), East China (Shanghai 2), Southwest (Guiyang), North China (Ulanqab), South China (Guangzhou)、HongKong |
| **Overseas** | Kazakhstan (Almaty), Singapore、US(Los Angeles) |

## Quota Limitations
To increase the quota for the related projects, please contact your account manager.

| Product       | Item                            | Quota  |
| ------------- | ------------------------------- | ------ |
| Virtual Tunnel| Number of virtual tunnels that can be created per port | 5      |
| Virtual Tunnel| Number of dynamic route entries per virtual tunnel        | 50     |
| Virtual Tunnel| Number of static route entries per virtual tunnel        | 50     |
| Virtual Router| Number of virtual tunnels that can be added to a single router | 5      |
| Virtual Router| Number of virtual routers in a single region **(see [Number Limitations])**         | 2      |

## Configuration Limitations
A PLVR can only be associated with virtual tunnels that have the same routing configuration; that is, both dynamic and static routes cannot coexist within the same PLVR.

## Number Limitations
For high availability and security considerations, a maximum of 2 PLVRs can be created at a single access point, and no increase in number is currently supported.