# Setting Up a Network Gateway Connection Using a Predefined Network Topology - Client Type is Servers

If you are setting up group-to-group network connectivity through a network gateway, consider using a network topology instance.

Note

With the topology for a network gateway connection, you can configure multiple client computers (in this case, servers) to provide a single logical network gateway function.

## Before You Begin

- Set up the Commvault network gateway. For more information, see Setting up the Commvault network gateway.

- The network topology instance requires the following client groups.

  - An infrastructure group, to will contain the CommServe server and internal MediaAgents.

  - A client group, to contain all servers.

  - A network gateway client group, to be the network gateway client.

  For information about how to create a group, see Adding or Editing a Server Group.

- You must have administrative management permissions on the client groups that you plan to use in the network topology instance.

- Servers/laptops and infrastructure computers should be able to open connections to network gateway on the tunnel port.

## Procedure

1. From the Command Center navigation pane, go to Manage > Network.

2. Click Network topologies.

   The Network topologies page appears.

3. Click Add topology.

   The Add topology dialog box appears.

4. In the Name box, enter a name for this instance of a network gateway connection.

5. For Client type, select Servers.

6. From the Topology type list, select Network Gateway.

7. Click Next.

8. Perform the following steps:

   Note

   See Using a Smart Network Topology When Setting Up Network Connections.

   1. In the Servers list, select a server group that will initiate connections to the network gateway group.

   2. Optional: Click the advanced toggle to edit the following options:

      - Tunnel port. Set this to Default (8403), or enter another port number.

      - Keep-alive interval. The interval (in seconds) for sending keep-alive packets, to maintain the session if backup traffic has an extended pause. Set this to 180 (default), or enter another interval. To avoid idle session timeouts on cloud-based clients, set the interval to 200 seconds or less.

   3. In the Network gateways list, select the server group that you want to designate as the network gateway group.

   4. Optional: Click the advanced toggle next to the Network gateways list to edit the Tunnel port and Keep-alive interval settings as described above.

   5. In the Backup infrastructure list, select another server group that will initiate connections to the network gateway group.

   6. Optional: Click the advanced toggle next to the Backup infrastructure list to edit the Tunnel port and Keep-alive interval options, as described above.

9. Click Next.

10. Optional: Edit the following advanced options:

    - Move the Encrypt traffic toggle key to the right to encrypt network traffic (HTTPS).

    - Select Encrypted, Authenticated, Regular, or Raw from the tunnel protocol list.

    - Select the Parallel data transfer streams for long distance networks (default value is 1, and maximum value is 8).

11. Click Submit.

## What to Do Next

If your clients do not have the Commvault software installed, install the Commvault software on the clients that will be part of the network topology.

During the client installation, configure the client to connect to the CommServe computer through a network gateway. For network settings instructions during the installation, see Setting Up Connectivity to the CommServe Computer Using a Network Gateway.

Note

Make sure to assign the client to the Servers that you defined in the topology.

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