Chapter 7
| Spanning Tree Algorithm
Configuring Interface Settings for STA
– 190 –
Figure 110: Displaying Global Settings for STA
Configuring Interface Settings for STA
Use the Spanning Tree > STA (Configure Interface - Configure) page to configure
RSTP and MSTP attributes for specific interfaces, including port priority, path cost,
link type, and edge port. You may use a different priority or path cost for ports of
the same media type to indicate the preferred path, link type to indicate a point-to-
point connection or shared-media connection, and edge port to indicate if the
attached device can support fast forwarding. (References to “ports” in this section
means “interfaces,” which includes both ports and trunks.)
Parameters
These parameters are displayed:
◆ Interface – Displays a list of ports or trunks.
◆ Spanning Tree – Enables/disables STA on this interface. (Default: Enabled)
◆ BPDU Flooding - Enables/disables the flooding of BPDUs to other ports when
global spanning tree is disabled (page 183) or when spanning tree is disabled
on a specific port. When flooding is enabled, BPDUs are flooded to all other
ports on the switch or to all other ports within the receiving port’s native VLAN
as specified by the Spanning Tree BPDU Flooding attribute (page 183).
(Default: Enabled)
◆ Priority – Defines the priority used for this port in the Spanning Tree Protocol.
If the path cost for all ports on a switch are the same, the port with the highest
priority (i.e., lowest value) will be configured as an active link in the Spanning
Tree. This makes a port with higher priority less likely to be blocked if the
Spanning Tree Protocol is detecting network loops. Where more than one port
is assigned the highest priority, the port with lowest numeric identifier will be
enabled.
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Default: 128
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Range: 0-240, in steps of 16
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