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title: Network and Load Balancer
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# Network and Load Balancer

A scale group connects to the rest of your infrastructure through a VPC, an optional public IP, and a load balancer that fronts its nodes. Two tabs cover this: the **Network** tab and the **Attached LB** tab.

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## Network Tab

The **Network** tab is available when the group is **Running**, **Scaling**, **Starting**, **Stopping**, or **Stopped**. It manages the VPCs attached to the group and whether group nodes receive a public IP.

### VPC

The VPC section lists the [VPCs](/docs/myaccount/network/vpc) attached to the scale group.

- **Attach a VPC** — if VPCs are already attached, select **Attach more vpc**; if none are attached, select the **Click here** link to attach one.
- **Detach a VPC** — select **Detach Vpc** and confirm in the dialog.

A scale group's nodes inherit the network you attach here. See [VPC documentation](/docs/myaccount/network/vpc) for VPC concepts and limits.

### Public IP

The Public IP section shows whether group nodes are assigned a public IP (**Enabled** or **Disabled**).

- To change it, select the **Click here** link.
- Confirm in the **Confirm Enable/Disable Public IP?** dialog.

:::note
Public IP can be unassigned only when the scale group is attached to a VPC.
:::

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## Attached LB

The **Attached LB** tab is shown when the group is **Running** or **Scaling**. It lists every load balancer that uses this scale group as a backend.

| Column  | What it shows                                                 |
| ------- | ------------------------------------------------------------- |
| S No.   | Row number.                                                   |
| LB Name | The load balancer's name.                                     |
| Status  | The load balancer's current status, with a colored indicator. |

Attaching a scale group to a load balancer is done from the **load balancer** side, by adding the group as an **Auto Scale Group** backend. As the Scaler adds and removes nodes, the load balancer automatically lists and de-lists them, so traffic always reaches healthy nodes. See [Backend Mapping](/docs/myaccount/load-balancer/manage/backends).

:::tip
Pairing every scale group with a load balancer gives your users a single, stable address even though the underlying nodes change continuously.
:::

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## Related Resources

| Resource                                                                                                      | Use it for                                       |
| ------------------------------------------------------------------------------------------------------------- | ------------------------------------------------ |
| [Manage Scale Groups](/docs/myaccount/auto-scaling/manage)                                                    | Return to the management hub.                    |
| [Backend Mapping](/docs/myaccount/load-balancer/manage/backends)                                              | Add the scale group as a load-balancer backend.  |
| [VPC](/docs/myaccount/network/vpc)                                                                            | VPC concepts and management.                     |
| [Security Group](/docs/myaccount/auto-scaling/manage/security-group)                                          | Control inbound/outbound traffic to group nodes. |
| [Attached LB list (API)](/api/myaccount/compute/auto-scaling/get-scaler-scalegroups-lb-details-auto-scale-id) | List attached load balancers programmatically.   |

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