# Monitor Load Balancer Capacity Unit reservation for your Application Load Balancer
<a name="monitor-capacity-unit-reservation"></a>

**Reservation status**

The following are the possible status values for an LCU reservation:
+ `pending` ‐ Indicates the reservation it is in the process of provisioning.
+ `provisioned` ‐ Indicates the reserved capacity is ready and available to use.
+ `failed` ‐ Indicates the request cannot be completed at the time.
+ `rebalancing` ‐ Indicates an availability zone has been added or removed and the load balancer is rebalancing capacity.

**LCU utilization**  
The `ReservedLCUs` metric is reported on a per-minute basis. Capacity is reserved on an hourly basis. For example, if you have a LCU reservation of 6,000, the one-hour total for `ReservedLCUs` is 6,000, and the one-minute total is 100. To determine your reserved LCU utilization, refer to the `PeakLCUs` metric. You can set CloudWatch alarms to compare the per-minute `Sum` of `PeakLCUs` against your reserved capacity value, or the per-hour `Sum` of `ReservedLCUs`, to determine whether you have reserved enough capacity to meet your needs.

------
#### [ Console ]

**To view the status of an LCU reservation**

1. Open the Amazon EC2 console at [https://console.aws.amazon.com/ec2/](https://console.aws.amazon.com/ec2/).

1. On the navigation pane, choose **Load Balancers**.

1. Select the load balancer name.

1. On the **Capacity** tab, you can view the **Reservation Status** and **Reserved LCU** value.

------
#### [ AWS CLI ]

**To monitor the status of an LCU reservation**  
Use the [describe-capacity-reservation](https://docs.aws.amazon.com/cli/latest/reference/elbv2/describe-capacity-reservation.html) command.

```
aws elbv2 describe-capacity-reservation \
    --load-balancer-arn load-balancer-arn
```

------