C
HAPTER
4
| Configuring the Switch
Configuring the Spanning Tree Algorithm
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Advanced Settings
◆ Edge Port BPDU Filtering – BPDU filtering allows you to avoid
transmitting BPDUs on configured edge ports that are connected to end
nodes. By default, STA sends BPDUs to all ports regardless of whether
administrative edge is enabled on a port. BDPU filtering is configured
on a per-port basis. (Default: Disabled)
◆ Edge Port BPDU Guard – This feature protects edge ports from
receiving BPDUs. It prevents loops by shutting down an edge port when
a BPDU is received instead of putting it into the spanning tree
discarding state. In a valid configuration, configured edge ports should
not receive BPDUs. If an edge port receives a BPDU, an invalid
configuration exists, such as a connection to an unauthorized device.
The BPDU guard feature provides a secure response to invalid
configurations because an administrator must manually enable the
port. (Default: Disabled)
◆ Port Error Recovery – Controls whether a port in the error-disabled
state will be automatically enabled after a certain time. If recovery is
not enabled, ports have to be disabled and re-enabled for normal STA
operation. The condition is also cleared by a system reboot.
◆ Port Error Recovery Timeout – The time that has to pass before a
port in the error-disabled state can be enabled. (Range: 30-86400
seconds or 24 hours)
WEB INTERFACE
To configure global settings for STA:
1. Click Configuration, Spanning Tree, Bridge Settings.
2. Modify the required attributes.
3. Click Save.
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