Bridge, Spanning tree, Storm threshold – Proxim ORiNOCO AP-700 User Manual
Page 77: Intra bss, Spanning tree storm threshold intra bss
Performing Advanced Configuration
AP-700 User Guide
Bridge
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Bridge
The AP is a bridge between your wired and wireless networking devices. As a bridge, the functions performed by the AP include:
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MAC address learning
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Forward and filtering decision making
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Spanning Tree protocol used for loop avoidance
Once the AP is connected to your network, it learns which devices are connected to it and records their MAC addresses in the Learn Table.
The table can hold up to 10,000 entries. To view the Learn Table, click on the Monitor button in the web interface and select the
tab.
The Bridge tab has four sub-tabs:
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Spanning Tree
A Spanning Tree is used to avoid redundant communication loops in networks with multiple bridging devices. Bridges do not have any
inherent mechanism to avoid loops, because having redundant systems is a necessity in certain networks. However, redundant systems can
cause Broadcast Storms, multiple frame copies, and MAC address table instability problems.
Complex network structures can create multiple loops within a network. The Spanning Tree configuration blocks certain ports on AP devices
to control the path of communication within the network, avoiding loops and following a spanning tree structure.
For more information on Spanning Tree protocol, please see Section 8.0 of the IEEE 802.1d standard. The Spanning Tree configuration
options are advanced settings. Proxim recommends that you leave these parameters at their default values unless you are familiar with the
Spanning Tree protocol.
Storm Threshold
Storm Threshold is an advanced Bridge setup option that you can use to protect the network against data overload by:
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Specifying a maximum number of frames per second as received from a single network device (identified by its MAC address).
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Specifying an absolute maximum number of messages per port.
The Storm Threshold parameters allow you to specify a set of thresholds for each port of the AP, identifying separate values for the number of
broadcast messages/second and Multicast messages/second.
When the number of frames for a port or identified station exceeds the maximum value per second, the AP will ignore all subsequent
messages issued by the particular network device, or ignore all messages of that type.
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Address Threshold: Enter the maximum allowed number of packets per second.
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Ethernet Threshold:
Enter the maximum allowed number of packets per second.
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Wireless Threshold: Enter the maximum allowed number of packets per second.
Intra BSS
The wireless clients (or subscribers) that associate with a certain AP form the Basic Service Set (BSS) of a network infrastructure. By default,
wireless subscribers in the same BSS can communicate with each other. However, some administrators (such as wireless public spaces) may
wish to block traffic between wireless subscribers that are associated with the same AP to prevent unauthorized communication and to
conserve bandwidth. This feature enables you to prevent wireless subscribers within a BSS from exchanging traffic.
Although this feature is generally enabled in public access environments, Enterprise LAN administrators use it to conserve wireless
bandwidth by limiting communication between wireless clients. For example, this feature prevents peer-to-peer file sharing or gaming over the
wireless network.
To block Intra BSS traffic, set Intra BSS Traffic Operation to Block.
To allow Intra BSS traffic, set Intra BSS Traffic Operation to Passthru.