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Dell EMC Configuration Guide for the S4048T–ON System 9.14.2.4

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Important Points to Remember

  • STP is disabled by default.
  • The Dell EMC Networking OS supports only one spanning tree instance (0). For multiple instances, enable the multiple spanning tree protocol (MSTP) or per-VLAN spanning tree plus (PVST+). You may only enable one flavor of spanning tree at any one time.
  • All ports in virtual local area networks (VLANs) and all enabled interfaces in Layer 2 mode are automatically added to the spanning tree topology at the time you enable the protocol.
  • To add interfaces to the spanning tree topology after you enable STP, enable the port and configure it for Layer 2 using the switchport command.
  • The IEEE Standard 802.1D allows 8 bits for port ID and 8 bits for priority. The 8 bits for port ID provide port IDs for 256 ports.

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