User Manual
Table Of Contents
- Chapter 1 - System Description
- 1.1 Introducing BreezeACCESS VL
- 1.2 Base Station Equipment
- 1.3 Subscriber Unit
- 1.4 BreezeACCESS VL B&B (4.9 GHz only)
- 1.5 Networking Equipment
- 1.6 Management Systems
- 1.7 Specifications
- 1.7.1 Radio
- 1.7.2 Data Communication
- 1.7.3 Configuration and Management
- 1.7.4 Standards Compliance, General
- 1.7.5 Physical and Electrical
- 1.7.6 Environmental
- Chapter 2 - Installation
- 2.1 Installation Requirements
- 2.2 Equipment Positioning Guidelines
- 2.3 Installing the Outdoor Unit
- 2.4 Installing the Universal IDU Indoor Unit
- 2.5 Installing the SU-I
- 2.6 Installing the Modular Base Station Equipment
- Chapter 3 - Commissioning
- Chapter 4 - Operation and Administration
- 4.1 Working with the Monitor Program
- 4.2 Menus and Parameters
- 4.2.1 Main Menu
- 4.2.2 Info Screens Menu
- 4.2.3 Unit Control Menu
- 4.2.3.1 Reset Unit
- 4.2.3.2 Default Settings
- 4.2.3.3 Change Unit Name
- 4.2.3.4 Change Password
- 4.2.3.5 Flash Memory Control
- 4.2.3.6 Log Out Timer
- 4.2.3.7 Ethernet Negotiation Mode
- 4.2.3.8 Change System Location
- 4.2.3.9 Event Log Menu
- 4.2.3.10 Feature Upgrade
- 4.2.3.11 SW Version Download
- 4.2.3.12 Configuration File Upload/Download
- 4.2.4 Basic Configuration Menu
- 4.2.5 Site Survey Menu
- 4.2.6 Advanced Configuration Menu
- 4.2.6.1 IP Parameters
- 4.2.6.2 Air Interface Parameters
- 4.2.6.2.1 Country Code and Sub-Bands
- 4.2.6.2.2 ESSID Parameters
- 4.2.6.2.3 Frequency Definition Parameters
- 4.2.6.2.4 Frequency Definition Submenu in AU
- 4.2.6.2.5 Frequency Definition Submenu in SU
- 4.2.6.2.6 Best AU Parameters (SU)
- 4.2.6.2.7 Scanning Mode (SU only)
- 4.2.6.2.8 Power Control Parameters
- 4.2.6.2.9 Antenna Gain
- 4.2.6.2.10 Cell Distance Parameters (AU only)
- 4.2.6.2.11 Arbitration Inter-Frame Spacing (AIFS)
- 4.2.6.2.12 Maximum Number of Associations (AU only)
- 4.2.6.2.13 Wireless Link Trap Threshold (AU only)
- 4.2.6.2.14 Spectrum Analysis
- 4.2.6.2.14.1 Spectrum Analysis Channel Scan Period
- 4.2.6.2.14.2 Spectrum Analysis Scan Cycles
- 4.2.6.2.14.3 Automatic Channel Selection (AU only)
- 4.2.6.2.14.4 Spectrum Analysis Activation
- 4.2.6.2.14.5 Reset Spectrum Analysis Information
- 4.2.6.2.14.6 Spectrum Analysis Information Display
- 4.2.6.2.14.7 Spectrum Analysis Information Display - Continuous
- 4.2.6.2.14.8 Show Spectrum analysis Parameters & Data
- 4.2.6.2.15 Lost Beacons Transmission Watchdog Threshold (AU only)
- 4.2.6.2.16 Disassociate (AU only)
- 4.2.6.2.17 Noise Immunity Control
- 4.2.6.2.18 Noise Floor Calculation Parameters
- 4.2.6.3 Network Management Parameters
- 4.2.6.3.1 Access to Network Management
- 4.2.6.3.2 Network Management Filtering
- 4.2.6.3.3 Set Network Management IP Address
- 4.2.6.3.4 Delete a Network Management IP Address
- 4.2.6.3.5 Delete All Network Management IP Addresses
- 4.2.6.3.6 Set/Change Network Management IP Address Ranges
- 4.2.6.3.7 SNMP Traps (AU Only)
- 4.2.6.3.8 Wi2 IP Address (SU Only)
- 4.2.6.4 Bridge Parameters
- 4.2.6.4.1 VLAN Support
- 4.2.6.4.1.1 VLAN ID-Data (SU only)
- 4.2.6.4.1.2 VLAN ID-Management
- 4.2.6.4.1.3 VLAN Link Type
- 4.2.6.4.1.4 VLAN Forwarding (AU and SU)
- 4.2.6.4.1.5 VLAN Relaying (AU only)
- 4.2.6.4.1.6 Service Provider VLAN ID (SU only)
- 4.2.6.4.1.7 VLAN Traffic Priority
- 4.2.6.4.1.8 VLAN QinQ Protocol Ethertype
- 4.2.6.4.1.9 Show VLAN Parameters
- 4.2.6.4.2 Ethernet Broadcast Filtering (SU only)
- 4.2.6.4.3 Ethernet Broadcast/Multicast Limiter
- 4.2.6.4.4 Bridge Aging Time
- 4.2.6.4.5 Broadcast/Multicast Relaying (AU only)
- 4.2.6.4.6 Unicast Relaying (AU only)
- 4.2.6.4.7 MAC Address List (AU only)
- 4.2.6.4.8 Roaming Option (SU only)
- 4.2.6.4.9 Ports Control (SU only)
- 4.2.6.4.10 Show Bridge Parameters
- 4.2.6.4.1 VLAN Support
- 4.2.6.5 Performance Parameters
- 4.2.6.5.1 RTS Threshold
- 4.2.6.5.2 Minimum Contention Window
- 4.2.6.5.3 Maximum Contention Window
- 4.2.6.5.4 Multicast Modulation Level (AU only)
- 4.2.6.5.5 Maximum Modulation Level
- 4.2.6.5.6 Average SNR Memory Factor
- 4.2.6.5.7 Number of HW Retries
- 4.2.6.5.8 Burst Mode
- 4.2.6.5.9 Adaptive Modulation Algorithm (Multi Rate)
- 4.2.6.5.10 Concatenation Parameters
- 4.2.6.6 Service Parameters
- 4.2.6.6.1 User Filtering Parameters (SU only)
- 4.2.6.6.2 MIR and CIR Parameters
- 4.2.6.6.2.1 MIR: Downlink (SU only)
- 4.2.6.6.2.2 MIR: Uplink (SU only)
- 4.2.6.6.2.3 CIR: Downlink (SU only)
- 4.2.6.6.2.4 CIR: Uplink (SU only)
- 4.2.6.6.2.5 Maximum Burst Duration (SU and AU)
- 4.2.6.6.2.6 Maximum Delay (SU only)
- 4.2.6.6.2.7 Graceful Degradation Limit (AU only)
- 4.2.6.6.2.8 MIR Only Option (AU only)
- 4.2.6.6.2.9 MIR Threshold Percent (AU only)
- 4.2.6.6.2.10 Show MIR/CIR Parameters
- 4.2.6.6.3 Traffic Prioritization
- 4.2.6.6.3.1 VLAN Priority Threshold
- 4.2.6.6.3.2 ToS Prioritization
- 4.2.6.6.3.3 UDP/TCP Port Ranges Traffic Prioritization
- 4.2.6.6.3.4 Low Priority Traffic Minimum Percent
- 4.2.6.6.3.5 Wireless Link Prioritization Parameters (AU)
- 4.2.6.6.3.5.1 Wireless Link Prioritization Option
- 4.2.6.6.3.5.2 Low Priority AIFS
- 4.2.6.6.3.5.3 Number of HW Retries for High Priority Traffic
- 4.2.6.6.3.5.4 Number of HW Retries for Low Priority Traffic
- 4.2.6.6.3.5.5 AU Burst Duration for High Priority Traffic
- 4.2.6.6.3.5.6 AU Burst Duration for Low Priority Traffic
- 4.2.6.6.3.5.7 SU Burst Duration for High Priority Traffic
- 4.2.6.6.3.5.8 SU Burst Duration for Low Priority Traffic
- 4.2.6.6.4 DRAP Parameters (AU only)
- 4.2.6.6.5 Show Service Parameters
- 4.2.6.7 Security Parameters
- 4.2.6.8 Country Code Parameters
Chapter 4 - Operation and Administration
BreezeACCESS VL System Manual
196
4.2.6.6.3.5 Wireless Link Prioritization Parameters (AU)
To better support delay-sensitive and other high-priority traffic, a set of Wireless
Link Prioritization parameters enables configuring parameters that affect the
processes of gaining access to the wireless media and of transmitting high/low
priority packets.
The Wireless Link Prioritization feature is a licensed feature and is available only
in units with the suitable Feature License.
The time interval between two consecutive transmissions of frames is called Inter-
Frame Spacing (IFS). This is the time during which the unit determines whether
the medium is idle using the carrier sense mechanism. The IFS depends on the
type of the next frame to be transmitted, as follows:
SIFS (Short Inter-Frame Spacing) is used for certain frames that should be
transmitted immediately, such as ACK and CTS frames. The value of SIFS is
16 microseconds.
DIFS (Distributed coordination function Inter-Frame Spacing) is typically
used for other frame types when the medium is free. If the unit decides that
the medium is not free, it will defer transmission by DIFS plus a number of
time slots as determined by the Contention Window back-off algorithm after
reaching a decision that the medium has become free. DIFS equal SIFS plus
AIFS, where AIFS is a configurable number of time slots.
Under regular conditions, AIFS is configured to two time slots. To support
prioritization in the wireless link, we can configure a higher AIFS for low priority
traffic (AIFS of two time slots will always be used for high priority traffic as well as
AU’s transmissions of broadcasts/multicasts and beacons). This will give
advantage to units that need to transmit high priority traffic (depending also on
the configured values for the Contention Window parameters).
Other parameters related to transmission to the wireless media that can be
configured separately for high/low priority packets are the Number of HW Retries
and Burst Duration.
Typically, a lower value of Number of HW Retries should be configured for traffic
such as VoIP, which on the one hand is sensitive to delays and on the other hand
is less sensitive to missing packets than data traffic.
The Burst Duration, which defines the maximum duration of a burst, should be
set to a lower value for delay sensitive traffic. Typically the Burst Duration of the
AU should be set to higher value than that of the SUs, because of the higher
number of packets that should be transmitted by the AU.
When the Wireless Link Prioritization feature is enabled, the following parameters
are not applicable: