Connecting to Multiple Virtual Networks in Qumulo Core

This section explains how to connect a Qumulo cluster to multiple virtual networks by using VLAN tagging.

Each node in a Qumulo cluster has a single NIC labeled bond0 and creates a bond between two physical ports by using either active backup (a redundant configuration in which one port is active while the other is in standby mode) or LACP (the aggregation of multiple, parallel network connections).

When you create a Qumulo cluster, its configuration includes a network named Default. The configuration uses DHCP, the bond, and a single default gateway associated with the bond.

Step 1: Configure Default DHCP Settings

You can configure your Qumulo cluster from the default DHCP configuration. If you have already configured a single static network, skip this step and add another network.

To assign a default gateway, run the qq network_mod_interface command. For example:
```
qq network_mod_interface \
  --default-gateway 203.0.113.0
```

To configure the Default network to use static (rather than DHCP) addressing, run the qq network_mod_network command. For example:

qq network_mod_network \
  --network-id 1\ 
  --assigned-by STATIC \
  --ip-ranges 203.0.113.0-10 \
  --floating-ip-ranges 203.0.113.10-20 \
  --netmask 255.255.255.0 \
  --dns-servers 203.0.113.1 \
  --dns-search-domains example.com

Step 2: Add More Networks

After you configure the first network for your Qumulo cluster, you can add more networks to it.

Note

If you can add both static and floating IP addresses, they must be on the same network.
You can use multiple --floating-ip-ranges or --dns-servers flags.
Each VLAN can have different MTU values, as long as the MTU value of the Default network is equal or greater than the combined MTU values of all networks in your Qumulo cluster. To set the MTU value for the Default network, run the qq network_mod_interface command. Then, you can set an equal or smaller MTU value for the other networks.

To add a network, run the qq network_add_network command. For example:

qq network_add_network \
  --name MyNetworkName \
  --ip-ranges 192.168.0.1-10 \
  --floating-ip-ranges 192.168.0.11-21 \
  --netmask 255.255.255.0 \
  --dns-servers 8.8.8.8 \
  --dns-search-domains example.com \
  --mtu 1500 \
  --vlan-id 200

To view the details your networks, run the qq network_list_networks command.
To view the IP addresses assigned to the nodes in your cluster, run the qq network_poll command.

Connecting to Multiple Virtual Networks in Qumulo Core

Step 1: Configure Default DHCP Settings

Step 2: Add More Networks

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