Edge-Core ECS4210-12P Web Management Guide

Chapter 7 | Spanning Tree Algorithm
Configuring Global Settings for STA
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◆ 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.)
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Default: 32768
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Range: 0-61440, in steps of 4096
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Options: 0, 4096, 8192, 12288, 16384, 20480, 24576, 28672, 32768, 36864,
40960, 45056, 49152, 53248, 57344, 61440
◆ BPDU Flooding – Configures the system to flood BPDUs to all other ports on
the switch or just to all other ports in the same VLAN when spanning tree is
disabled globally on the switch or disabled on a specific port.
■
To VLAN: Floods BPDUs to all other ports within the receiving port’s native
VLAN (i.e., as determined by port’s PVID). This is the default.
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To All: Floods BPDUs to all other ports on the switch.
The setting has no effect if BPDU flooding is disabled on a port (see
"Configuring Interface Settings for STA").
Advanced Configuration Settings
The following attributes are based on RSTP, but also apply to STP since the switch
uses a backwards-compatible subset of RSTP to implement STP, and also apply to
MSTP which is based on RSTP according to the standard:
◆ Path Cost Method – The path cost is used to determine the best path between
devices. The path cost method is used to determine the range of values that
can be assigned to each interface.
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Long: Specifies 32-bit based values that range from 1-200,000,000.
(Thisisthedefault.)
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Short: Specifies 16-bit based values that range from 1-65535.
◆ Transmission Limit – The maximum transmission rate for BPDUs is specified by
setting the minimum interval between the transmission of consecutive
protocol messages. (Range: 1-10; Default: 3)
When the Switch Becomes Root
◆ Hello Time – Interval (in seconds) at which the root device transmits a
configuration message.
■
Default: 2
■
Minimum: 1
■
Maximum: The lower of 10 or [(Max. Message Age / 2) -1]
◆ Maximum Age – The maximum time (in seconds) a device can wait without
receiving a configuration message before attempting to reconverge. All device

Edge-Core ECS4210-12P Specifications

General

Brand	Edge-Core
Model	ECS4210-12P
Category	Network Router
Language	English