User's Manual
Table Of Contents
- Cambium
- PMP 450 Operations Guide
- Safety and regulatory information
- Contents
- List of Figures
- List of Tables
- PMP support website: http://www.cambiumnetworks.com/support
- Cambium main website: http://www.cambiumnetworks.com/
- Sales enquiries: solutions@cambiumnetworks.com
- Email support: support@cambiumnetworks.com
- Cambium Networks
- 3800 Golf Road, Suite 360
- Rolling Meadows, IL 60008
- Growing Your Network
- Managing Bandwidth and Authentication
- Configuring quality of service
- Maximum Information Rate (MIR) Parameters
- Token Bucket Algorithm
- Maximum Information Rate Data Entry Checking
- Bandwidth from the SM Perspective
- Interaction of Burst Allocation and Sustained Data Rate Settings
- High-priority Bandwidth
- Traffic Scheduling
- Setting the Configuration Source
- Quality of Service (QoS) Tab of the AP
- DiffServ Tab of the AP
- Quality of Service (QoS) Tab of the SM
- DiffServ Tab of the SM
- Configuring a RADIUS server
- Understanding RADIUS for PMP 450
- Choosing Authentication Mode and Configuring for Authentication Servers - AP
- SM Authentication Mode – Require RADIUS or Follow AP
- Handling Certificates
- Configuring your RADIUS servers for SM authentication
- Configuring your RADIUS server for SM configuration
- Using RADIUS for centralized AP and SM user name and password management
- RADIUS Device Data Accounting
- RADIUS Device Re-Authentication
- RADIUS Attribute Framed-IP-Address
- Configuring quality of service
- Managing the network from a Network Management Station (NMS)
- Using Informational Tabs in the GUI
- Viewing General Status (AP)
- Viewing General Status (SM)
- Viewing Session Status (AP)
- Viewing Remote Subscribers (AP)
- Interpreting messages in the Event Log
- Viewing the Network Interface Tab (All)
- Viewing the Layer 2 Neighbors Tab (AP and SM)
- Viewing the Scheduler Tab (AP and SM)
- List of Registration Failures (AP)
- Interpreting Data in the Bridging Table (All)
- Translation Table (SM)
- Interpreting Data in the Ethernet Tab (All)
- Interpreting RF Control Block Statistics in the Radio Tab (All)
- Interpreting Data in the VLAN Tab (ALL)
- Viewing Data VC Statistics (All)
- Viewing Summary Information in the Overload Tab (All)
- Viewing Filter Statistics (SM)
- Viewing ARP Statistics (SM)
- Viewing NAT Statistics (SM)
- Viewing NAT DHCP Statistics (SM)
- Interpreting Data in the GPS Status Page (AP)
- Accessing PPPoE Statistics About Customer Activities (SM)
- Viewing Bridge Control Block Statistics (All)
- Using Tools in the GUI
- Using the Spectrum Analyzer Tool
- Graphical spectrum analyzer display
- Using the AP as a Spectrum Analyzer
- Using the Remote Spectrum Analyzer Tool (AP)
- Using the Alignment Tool (SM)
- Using the Link Capacity Test Tool (AP or SM)
- Using the AP Evaluation Tool (SM)
- Using the OFDM Frame Calculator Tool for Collocation (AP or SM)
- Using the Subscriber Configuration Tool (AP)
- Reviewing the Link Status Tool Results (AP)
- Using the BER Results Tool (SM)
- Using the Throughput Monitoring Tool (AP)
- Using the Sessions Tool (AP)
- Maintaining Your Software
- Troubleshooting
- General planning for troubleshooting
- General fault isolation process
- Secondary Steps
- Procedures for Troubleshooting
- Module Has lost or does not establish connectivity
- NAT/DHCP-configured SM has lost or does not establish connectivity
- SM Does Not Register to an AP
- Module has lost or does not gain sync
- Module does not establish Ethernet connectivity
- Module does not power on
- Power supply does not produce power
- CMM does not pass proper GPS sync to connected modules
- Module Software Cannot be Upgraded
- Module Functions Properly, Except Web Interface Became Inaccessible
- Reference information
Viewing General Status (SM)
Using Informational Tabs in the GUI
4-8
pmp-0049 (September 2012)
Attribute
Meaning
Registered AP
This field displays the MAC address of the AP to which this SM is registered.
Color Code
Module parameter that identifies the other modules with which
communication is allowed. The range of values is 0 to 255. When set at 0, the
Color Code does not restrict communications with any other module.
Channel Frequency
This field lists the current operating frequency of the radio.
Receive Power Level
This field lists the current receive power level, in dBm.
Transmit Power
Level
This field lists the current transmit power level, in dBm.
Signal to Noise Ratio
This field lists the current signal-to-noise level, an indication of the
separation of the received power level vs. noise floor.
Air Delay
This field displays the distance in feet between this SM and the AP. To derive
the distance in meters, multiply the value of this parameter by 0.3048.
Distances reported as less than 200 feet (61 meters) are unreliable.
Data Slots Down
This field lists the number of slots used for downlink data transmission.
Data Slots Up
This field lists the number of slots used for uplink data transmission.
Control Slots
This field indicates the number of (reserved) control slots configured by the
operator. Control slots are half the size of data slots. The SM uses reserved
control slots and unused data slots for bandwidth requests.
If too few reserved control slots are specified, then latency increases in high
traffic periods. If too many are specified, then the maximum capacity is
unnecessarily reduced.
In a typical cluster, each AP should be set to the same number of control
slots to assure proper timing in the send and receive cycles. However, where
high incidence of small packets exists, as in a sector that serves several VoIP
streams, additional control slots may provide better results. For APs in a
cluster of mismatched control slots settings, or where OFDM and FSK APs of
the same frequency band are collocated, use the frame calculator.
If you are experiencing latency or SM-servicing issues, increasing the number
of control slots may increase system performance, depending on traffic mix
over time.
Use care when changing the control slot configuration of only some APs,
because changes affect the uplink/downlink ratio and can cause collocation
issues.
Change control slot configuration in an operating, stable system
cautiously and with a back-out plan. After changing a control slot
configuration, monitor the system closely for problems as well as
improvements in system performance..