Dell Networking S6000 Bedienungsanleitung PDF herunterladen (Seite 809)

Important Points to Remember

• STP is disabled by default.

• The Dell 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.

Configuring Interfaces for Layer 2 Mode

All interfaces on all switches that participate in spanning tree must be in Layer 2 mode and enabled.

Figure 111. Example of Configuring Interfaces for Layer 2 Mode

Spanning Tree Protocol (STP)

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Dell Networking S6000 Bedienungsanleitung Seite 809