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Broadcast-domain configured with ports from multiple VLANs

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data-ontap-8
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network
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Applies to

  • ONTAP 9
  • Clustered Data ONTAP 8.3

Description

  • Starting in Clustered Data ONTAP 8.3, the concept of a broadcast-domain was introduced. A broadcast-domain is designed to contain a set of ports which belong to the same layer 2 network.
  • After a broadcast-domain is created, one or more LIFs might be assigned to it with the understanding that the LIF might failover to any port within the broadcast-domain and expect the same network connectivity.
  • A broadcast-domain that contains ports from multiple VLANs might lead to a service interruption if a LIF fails over to a port within the broadcast-domain that does not provide the same network connectivity.
There are cases where a mixture of VLAN tagged and non-tagged ports in a single broadcast-domain might be acceptable. It is up to the user to make this determination based on the client network configuration. If the switch port the non-VLAN tagged ports are connected to are configured to have access to the VLAN, then there might not be an issue. This would most commonly be seen with the e0M port due to the inability to configure a VLAN tag on this port.
  • As the storage controller does not have visibility into this configuration, it might raise a warning message or alerts from the storage controller or via AutoSupport. These messages can be ignored if the configuration has been validated.