Cambium Networks PMP 450 Series User Manual

Contents
Page iv
Link planning .................................................................................................................................... 3-22

Range and obstacles ................................................................................................................. 3-22
Path loss ..................................................................................................................................... 3-22
Calculating Link Loss ................................................................................................................ 3-23
Calculating Rx Signal Level ...................................................................................................... 3-23
Calculating Fade Margin ........................................................................................................... 3-24
Adaptive modulation ................................................................................................................ 3-24
Planning for connectorized units .................................................................................................... 3-25
When to install connectorized units ........................................................................................ 3-25
Choosing external antennas .................................................................................................... 3-25
Calculating RF cable length (5.8 GHz FCC only) ..................................................................... 3-25
Data network planning .................................................................................................................... 3-27
Understanding addresses......................................................................................................... 3-27
Dynamic or static addressing ................................................................................................... 3-27
DNS Client .................................................................................................................................. 3-28
Network Address Translation (NAT) ....................................................................................... 3-28
Developing an IP addressing scheme ..................................................................................... 3-29
Address Resolution Protocol .................................................................................................... 3-29
Allocating subnets ..................................................................................................................... 3-30
Selecting non-routable IP addresses ....................................................................................... 3-30
Translation bridging .................................................................................................................. 3-31
Engineering VLANs ................................................................................................................... 3-31
Network management planning ..................................................................................................... 3-35
Planning for SNMP operation .................................................................................................. 3-35
Enabling SNMP ......................................................................................................................... 3-35
Security planning ............................................................................................................................. 3-36
Isolating AP/BHM from the Internet ........................................................................................ 3-36
Encrypting radio transmissions ............................................................................................... 3-36
Planning for HTTPS operation ................................................................................................. 3-37
Planning for SNMPv3 operation .............................................................................................. 3-37
Managing module access by passwords ................................................................................ 3-38
Planning for RADIUS operation ............................................................................................... 3-39
Filtering protocols and ports .................................................................................................... 3-39
Encrypting downlink broadcasts ............................................................................................. 3-43
Isolating SMs in PMP ................................................................................................................ 3-43
Filtering management through Ethernet ................................................................................ 3-43
Allowing management from only specified IP addresses ..................................................... 3-44
Configuring management IP by DHCP .................................................................................... 3-44
Controlling PPPoE PADI Downlink Forwarding ...................................................................... 3-45
Chapter 4: Legal and regulatory information .................................................................................. 4-1
Cambium Networks end user license agreement ........................................................................... 4-2
Definitions .................................................................................................................................... 4-2
Acceptance of this agreement ................................................................................................... 4-2

Cambium Networks PMP 450 Series Specifications

General

Brand	Cambium Networks
Model	PMP 450 Series
Category	Wireless Access Point
Language	English