add-subnets.html.md.erb

---
title: Expanding Your Network with Additional Subnets
owner: Ops Manager
---

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This topic describes how to add more than one subnet to each network using the BOSH Director. After successfully deploying Ops Manager v2.1 and later, you can then expand your network with multiple, overlapping availability zones (AZs). You may want to create subnets with overlapping availability zones if your current subnet is full and you determined your network needs expansion.

![The Add Subnet button is floating to the right of the Subnets label in the Create Network pane of Ops Manager](images/gcp/add-subnet.png)

To add an additional subnet to your network, perform the following steps:

  1. Navigate to the **Create Networks** pane of your Ops Manager tile.
  1. Click the name of your network to expand network details.
  1. Click **Add Subnet**. This action populates a new set of subnet fields. You may need to scroll down to see the fields.
  1. Complete each of the subnet fields. For more information about configuring your subnet, see the Ops Manager configuration topic for your IaaS installation:
    * [AWS](../om/aws/config-terraform.html#om-networks)
    * [Azure](../om/azure/config-manual.html#create-networks)
    * [GCP](../om/gcp/config-terraform.html#network)
    * [OpenStack](../om/openstack/config.html#create-networks)
    * [vSphere](../om/vsphere/config.html#create-networks)        
  1. Click **Save**.
  1. Go to the **Installation Dashboard**.
  1. Click **Review Pending Changes**, then **Apply Changes**.