PLANET SGSD-1022 - Manual (Page 161)

User’s Manual of SGSD-1022 / SGSD-1022P
SGSW-2840 / SGSW-2840P
The page includes the following fields:
■ Basic Configuration of Global Settings
Object Description
• Spanning Tree State Enables/disables STA on this switch.
(Default: Enabled)
• Spanning Tree Type Specifies the type of spanning tree used on this switch:
- STP: Spanning Tree Protocol (IEEE 802.1D); i.e., when this option is
selected, the switch will use RSTP set to STP forced compatibility mode).
- RSTP: Rapid Spanning Tree (IEEE 802.1w); RSTP is the default.
- MSTP: Multiple Spanning Tree (IEEE 802.1s)
• Priority Bridge priority is used in selecting the root device, root port, and designated
port. The device with the highest priority becomes the STA root device. However,
if all devices have the same priority, the device with the lowest MAC address will
then become the root device. (Note that lower numeric values indicate higher
priority.)
- Default: 32768
- Range: 0-61440, in steps of 4096
- Options: 0, 4096, 8192, 12288, 16384, 20480, 24576, 28672, 32768,
36864, 40960, 45056, 49152, 53248, 57344, 61440
STP and RSTP BPDUs are transmitted as untagged frames, and will cross any VLAN
boundaries.
■ Root Device Configuration
Figure 4-7-3 Root Device Configuration page screenshot
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