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Add a broadcast domain

Contributors netapp-aaron-holt netapp-dbagwell netapp-barbe netapp-ahibbard
PDFs

Broadcast domains group network ports in the cluster that belong to the same layer 2 network. The ports can then be used by SVMs.

Beginning with ONTAP 9.8, broadcast domains are automatically created during the cluster create or join operation. Beginning with ONTAP 9.12.0, in addition to the automatically created broadcast domains, you can manually add a broadcast domain in System Manager.

Before you begin

The ports you plan to add to the broadcast domain must not belong to another broadcast domain. If the ports you want to use belong to another broadcast domain, but are unused, remove those ports from the original broadcast domain.

About this task

  • All broadcast domain names must be unique within an IPspace.

  • The ports added to a broadcast domain can be physical network ports, VLANs, or link aggregation groups/interface groups (LAGs/ifgrps).

  • If the ports you want to use belong to another broadcast domain, but are unused, remove them from existing broadcast domain before adding them to the new one.

  • The maximum transmission unit (MTU) of the ports added to a broadcast domain are updated to the MTU value set in the broadcast domain.

  • The MTU value must match all the devices connected to that layer 2 network except for the e0M port handling management traffic.

  • If you do not specify an IPspace name, the broadcast domain is created in the "Default" IPspace.

To make system configuration easier, a failover group of the same name is created automatically that contains the same ports.

System Manager
Steps

  1. Select Network > Overview > Broadcast domain.

  2. Click Add icon

  3. Name the broadcast domain.

  4. Set the MTU.

  5. Select the IPspace.

  6. Save the broadcast domain.

You can edit or delete a broadcast domain after it has been added.