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Mark989

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Mark989

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August 29th, 2025 09:38

OS10.6: port-fast?

Hello,

Among other wisdom, the OS10 User Guide for 10.6 says:

Most of the PXE clients do not support switching before a PXE boot. As a result, data loops do not form between the SmartFabric OS10 nodes and PXE clients on or before PXE boot process. For such cases, Dell Technologies recommends enabling port-fast on the LACP individual LAG that connects to the PXE client

However, it doesn't say HOW and I can't find the named option on my S5232F-ON running 10.6. I'm being dumb, does anyone know how to turn it on, please? I'm using RSTP.

Cheers,

Mark

  • DELL-Marco B

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    Posted September 1st, 2025 12:14

    Hello,

    did you check this documentation, it can be helpful?

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    Thanks

    (edited)

    DELL- Marco B

    Social Media and Communities Professional

    Dell Technologies | Enterprise Support Services

    #IWork4Dell

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  • Mark989

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    Posted September 1st, 2025 13:19

    Hi Marco, many thanks for your suggestion.

    Unfortunately, that document is for OS 9. If I attempt to do this on OS 10, I don't have an interface "spanning-tree portfast" option:

    switch# configure terminal
    switch(config)# interface ethernet 1/1/10
    switch(conf-if-eth1/1/10)# spanning-tree portfast
    % Error: Illegal parameter.

    switch(conf-if-eth1/1/10)# spanning-tree ?

      bpdufilter  BPDU filter on the interface
      bpduguard   BPDU guard on the interface
      disable     Disable stp on the interface
      guard       Guard type Loop or Root or None
      link-type   Detemine link type based on media duplex of this interface
      msti        Spanning Tree Subsystem
      port        Set port type
      rapid-pvst  Spanning Tree Rapid-pvst Subsystem
      rstp        Set rstp parameters for interface
      vlan        Select vlan range option

    Any ideas, please?

    Thanks,

    Mark

  • DELL-Marco B

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    Posted September 1st, 2025 17:04

    DELL- Marco B

    Social Media and Communities Professional

    Dell Technologies | Enterprise Support Services

    #IWork4Dell

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  • Mark989

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    Posted September 2nd, 2025 08:25

    Bingo, thanks Marco - that document tells me that `spanning-tree port type edge` on OS10 achieves the equivalent job of `spanning-tree portfast` on OS9.

    Could the OS10 documentation be updated, please? Pages 558, 563 and 567 in Dell SmartFabric OS10 User Guide Release 10.6.0 all refer to enabling port-fast, when presumably they should be recommending changing the port type to edge.