Proxim wireless ORiNOCO AP-4000MR-LR User's Guide download pdf (Page 113)

Advanced Configuration AP-4000MR User Guide

Alarms

113

Background Scanning Mode

In background scanning mode the AP performs background scanning while performing normal AP operations on the

wireless interface.

You can configure the scan cycle time between 1-1440 minutes (24 hours). The scan cycle time indicates how

frequently a channel is sampled and defines the minimum attack period that can go unnoticed.

In background scanning mode the AP will scan one channel then wait for a time known as channel scan time. The

channel scan time affects the amount of data collected during scanning and defines the maximum number of samples

(possible detections) in one scan. This is increased to improve scanning efficiency; the tradeoff is that it decreases

throughput. The optimum value for this parameter during background scanning mode is 20ms.The channel scan time is

calculated from the scan cycle time parameter and the number of channels in the scan channel list as follows:

intra-channel scan time = (scan cycle time - (channel scan time * number of channels in the scan list))/number of

channels in the scan list.

NOTE: If the AP is configured as a Mesh AP, the background scanning interval will be the same as the Mesh scanning

interval (20 ms if there is no uplink, or 180 ms if there is an uplink).

NOTE: In Background Scanning mode, the Mesh AP may not immediately detect all APs entering the network. To

ensure immediate detection of all APs entering the network, select Continuous Scanning mode.

Rogue Scan Data Collection

The AP stores information gathered about detected stations during scanning in a Rogue Scan result table. The Rogue

Scan result table can store a maximum of 2000 entries. When the table fills, the oldest entry gets overwritten. The Rogue

Scan result table lists the following information about each detected station:

• Station Type: indicates one of the following types of station:

– Unknown station

– AP station

– Infrastructure Client Station

– IBSS Client Station

• MAC Address of the detected station

• Channel: the working channel of the detected station

• SNR: the SNR value of the last frame from the station as received by the AP

• BSSID: the BSSID field stores the:

– MAC address of the associated Access Point in the case of a client.

– Zero MAC address or MAC address of the partner Access Point if the AP is a partner of a WDS link

The AP ages out older entries in the Rogue Scan result table if a detected station is inactive for more than the Scan

Result Table Ageing Time.

Rogue Scan

Perform this procedure to enable Rogue Scan on a particular interface or interfaces and define the Scan Interval and

Scan Interface. See Figure 4-41.

The Rogue Scan screen also displays the number of new access points and clients detected in the last scan on each

wireless interface.

1. Enable the Security Alarm Group. Select the Security Alarm Group link from the Rogue Scan screen. Configure a

Trap Host to receive the list of access points (and clients) detected during the scan.

2. Click Configure > Alarms > Rogue Scan.

3. Enable Rogue Scan on the wireless interface by checking Enable Rogue Scan.

1 2 ... 108 109 110 111 112 113 114 115 116 117 118 ... 266 267

Comments to this Manuals

No comments

Proxim wireless ORiNOCO AP-4000MR-LR User's Guide Page 113

Comments to this Manuals

Related products and manuals for Routers Proxim wireless ORiNOCO AP-4000MR-LR