Dell Unity: Switch requirements for configuring LACP on Unity ports
Summary: This KB describes switch requirements when using link aggregation LACP on Unity ports:
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Instructions
If the Unity ports are connected to different network switches, you should configure all switch ports connected to these ports to immediately switch from blocking mode to forwarding mode and not pass through spanning tree states of listening and learning when an interface comes up. On Cisco switches, this means that you must enable the portfast capability for each switch port connected to a Unity port to guarantee that the switch forwards the Ethernet frame that the storage system generates when a physical ink is enabled. You enable the portfast capability on a port-to-port basis. When enabled, the portfast variable causes the port to immediately switch from blocking to forwarding mode. Do not use portfast on switch-to-switch connections.
Affected Products
Dell Unity 300, Dell EMC Unity 300F, Dell EMC Unity 400, Dell EMC Unity 400F, Dell EMC Unity 500, Dell EMC Unity 500F, Dell EMC Unity 600F, Dell EMC Unity Family |Dell EMC Unity All Flash, Dell EMC Unity FamilyArticle Properties
Article Number: 000022593
Article Type: How To
Last Modified: 22 Oct 2025
Version: 6
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