Proxim ORiNOCO AP-800 Installation And Management Manual page 42

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To avoid a network loop between Bridge 1 and Bridge 2, the STP feature should be enabled on all the devices. Once
the STP feature is enabled, Bridge 1, Bridge 2 and Bridge 3 change from Disable state to Listening state and start
exchanging the BPDU packets. Bridge 1 and Bridge 2 then act as Designated Bridges and Bridge 3 as the Root
Bridge, as it has the highest priority and smallest MAC Address. The Root Bridge (Bridge 3) then calculates the
shortest low cost path to forward the data from bridge 1 to bridge 2, on a loop- free bridged network.
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Bridge 1 and Bridge 2 then change from Listening state to Learning state where they update the learn tables and
enable the shortest low cost path determined by the Root Bridge.
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The STP enabled Bridge 2 then changes from Learning state to Blocking state and blocks the longest high cost path,
determined by the Root Bridge to avoid loops on the network.
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Bridge 1 finally changes from Blocking state to Forwarding state and forwards the data packet to Bridge 2 through
the shortest low cost path enabled, avoiding loops on the network.
To configure STP on the device, do the following:
1. Navigate to CONFIGURATION > Network > STP. The Network STP Configuration screen appears.
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Status: Specifies the status of the STP feature on the device. By default, STP is disabled. To enable, select Enable
from the drop down menu.
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Bridge Priority: Specifies the priority assigned to a bridge. By default, a bridge is assigned with priority value of
4096. To configure, enter the value between 0 - 61440 (as multiples of 4096).
: Bridge assigned with the lowest value gets the highest priority, and is selected as Root Bridge.
ORiNOCO® AP-800 and AP-8000 Installation and Management Guide
Figure 3-7 STP Configuration
Device Configuration Using Web Interface
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