MotoTrbo IP Site Connect For Dummies Moto Trbo

MotoTrbo IP site connect for Dummies MotoTrbo IP site connect for Dummies

User Manual: MotoTrbo IP site connect for Dummies

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MOTORBO IP Site Connect
For Dummies
PH17/11/2011
Page 2
PH17/11/2011
Content
Content ............................................................................ 2
Introduction ..................................................................... 3
IP Network Requirements ............................................... 3
Bandwidth Calculations ................................................... 4
Wireless Broadband and MOTOTRBO ........................... 7
MOTOTRBO and ADSL (no VPN) ................................ 13
MOTOTRBO and ADSL (with VPN) .............................. 16
Further reading.............................................................. 18
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Introduction
This document is an attempt to remove all the waffle and try to give you the basic understanding to
set up a basic MOTOTRBO™ IP Site Connect system. The system may however still need some
tweaking regarding RSSI levels, delays and beacon lengths once operating. For more in-depth
information, refer to Motorola’s IP-Site-System-Integration document and System Planner. The
purpose of this document is however, to get the basic system running first.
IP Network Requirements
The IP backbone network can be a dedicated network or an internet connection provided by an
Internet Service Provider (ISP). ISPs provide a range of technologies such as dial-up; DSL
(typically ADSL); Cable Modem; broadband wireless access; ISDN; Frame Relay; Satellite etc. The
connection cannot use a dial-up connection (due to small bandwidth) or Satellite (due to large
delay).
The ideal end-to-end system delay must be less than 254 milliseconds.
Sufficient bandwidth must be made available by the IP Network and the packet loss; latency and
jitter must be within the limits. Calculate the minimum system bandwidth required using the below
guide and if using a device like ADSL you will need a guaranteed quality of service connection
from your ISP (Table 1).
The master repeater requires a static IP address. Peer repeaters can use a dynamic IP address. A
defined UDP port must be opened on all devices across the IP network which is responsible for
routing (e.g. ADSL modems; routers etc.) or firewall protection. The router and/or firewall’s user
manual will give further guidance on this.
If the Master repeater is connected to the IP Site Connect network via a router or (ADSL modem),
the internet service provider or network administrator has to allocate a static IP address to the
WAN port of that router/modem. A static IP address on the internet is expensive and one way to
solve this is to use VPN to connect the sites – some routers have VPN built-in.
When a Peer device registers with the Master repeater, the return IP Address and UDP Port of that
Peer device is supplied as part of the link establishment process. This IP Address and UDP Port
must then be made available by the IP Network to all other IP Site connect devices on the IP Site
Connect System.
The IP Network must not use a Proxy server which redirects a user to a login page before
connecting to the internet.
We have found that using fixed (static) IP addresses is easier than using dynamic addresses
(DHCP) due to the reduced complexity of configuration.
Always design the system so that there is a minimum of one unmanaged Ethernet (LAN) port to
connect the repeater to the broadband, ADSL or other connectivity devices, this allows for easy
connection of a laptop to service the equipment (such as setting up the connected devices IP’s and
pinging the devices), and will safeguard unnecessary plugging in and out of patch cables and the
outside chance of forgetting to reconnect or worse still damage the patch cable and or connectors.
Please note that if connected via an ISP or using a VPN, then a managed router is mandatory.
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Bandwidth Calculations
The following examples show the bandwidth calculation and values for a standard IP connection
with no VPN.
BWVC = 15 kbps = Bandwidth required to support Wide Area Voice or Data (per slot)
BWLM = 6 kbps = Bandwidth required to support Link Management
BWIR = 3 kbps = Bandwidth required to support Master Messaging
BWRD = 55 kbps = Bandwidth required to support RDAC1 commands
Example 1: Master & 4 Peer Repeaters with both slots linked with no RDAC1
Number of Wide Area Channel Peers2 for Slot 1
4
BWVC
15kbps
Number of Wide Area Channel Peers2 for Slot 2
4
BWVC
15kbps
Total Number of IP Site Connect Peers2
4
BWLM
6kbps
If Master, Total Number of IP Site Connect Peers2
4
BWIR
3kbps
RDAC1 Traffic
0
BWRD
55kbps
Required Minimum & Guaranteed Uplink/Downlink Bandwidth
Example 2: Master & 4 Peer Repeaters with both slots linked on two sites, slot 2 linked on three
sites and with RDAC1
Number of Wide Area Channel Peers2 for Slot 1
2
BWVC
15kbps
30kbps
Number of Wide Area Channel Peers2 for Slot 2
3
BWVC
15kbps
45kbps
Total Number of IP Site Connect Peers2
5
BWLM
6kbps
30kbps
If Master, Total Number of IP Site Connect Peers2
5
BWIR
3kbps
15kbps
RDAC1 Traffic
1
BWRD
55kbps
55kbps
Required Minimum & Guaranteed Uplink/Downlink Bandwidth
175kbps
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Using VPN adds some overhead (i.e. extra bandwidth needed) to maintain the connection and to
support encryption.
BWVC = 23 kbps = Bandwidth required to support Wide Area Voice or Data (per slot)
BWLM = 5 kbps = Bandwidth required to support Link Management
BWIR = 4 kbps = Bandwidth required to support Master Messaging
BWRD = 64 kbps = Bandwidth required to support RDAC1 commands
Example 3: Master & 4 Peer Repeaters with all time slots activated for interconnect with no RDAC1
Number of Wide Area Channel Peers2 for Slot 1
4
BWVC
23kbps
92kbps
Number of Wide Area Channel Peers2 for Slot 2
4
BWVC
23kbps
92kbps
Total Number of IP Site Connect Peers2
4
BWLM
5kbps
20kbps
If Master, Total Number of IP Site Connect Peers2
4
BWIR
4kbps
16kbps
RDAC1 Traffic
0
BWRD
64kbps
0kbps
Required Minimum & Guaranteed Uplink/Downlink Bandwidth
220kbps
Example 4: Master & 4 Peer Repeaters with selected time slots activated 2 * 1 WAC3 & 3 * 2 WAC3
for interconnect with RDAC1 (Figure 1)
Number of Wide Area Channel Peers2 for Slot 1
2
BWVC
23kbps
46kbps
Number of Wide Area Channel Peers2 for Slot 2
3
BWVC
23kbps
69kbps
Total Number of IP Site Connect Peers2
5
BWLM
5kbps
25kbps
If Master, Total Number of IP Site Connect Peers2
5
BWIR
4kbps
20kbps
RDAC1 Traffic
1
BWRD
64kbps
64kbps
Required Minimum & Guaranteed Uplink/Downlink Bandwidth
224kbps
1 RDAC is an optional MOTOTRBO Repeater Diagnostics and Control application
2 Peer does not include self.
3 WAC is Wide Area Coverage
4 LC is local; no link slots selected
Note: The above tables with automated calculation in Excel, are included on the ARD CPS disk,
and are available for downloaded from the ARD download site.
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Figure 1
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Wireless Broadband and MOTOTRBO
It is possible to provide IP connectivity between sites using a Motorola Point to Point Wireless
Broadband link. The below drawing and screenshots show a three site IP Site Connected system
using such a broadband connection (the Motorola PTP300). Connectivity between the two devices
is buffered by a simple Ethernet Unmanaged Switch.
The IP address configuration of the above devices is as follows:
Radio
Both
Device
ID
Radio IP
Master IP
Ethernet IP
Gateway IP
DHCP
Master
1
192.168.10.1
0.0.0.0.0
196.168.4.101
192.168.4.254
PTP300
N/A
N/A
196.168.4.200
192.168.4.254
Peer 1
2
192.168.10.1
196.168.4.101
196.168.4.11
192.168.4.254
PTP300 A
N/A
N/A
196.168.4.201
192.168.4.254
PTP300 B
N/A
N/A
196.168.4.202
192.168.4.254
Peer 2
3
192.168.10.1
196.168.4.101
196.168.4.12
192.168.4.254
PTP300
N/A
N/A
196.168.4.203
192.168.4.254
Radio UDP Port = 50000
NOTE: The IP addresses in the DR3000 and the PTP300 example starting with 196 are routable
(public); you should consider changing these to something starting with 10 or 192. The same goes
for the other diagrams.
Figure 2
Site 1
Site 3
Site 2
A
B
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The below screenshots show the PTP300 configuration settings
Site 1 PTP300 configuration settings
Figure 3
Site 2 PTP300 configuration settings
Figure 4
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Site 2B PTP300 configuration settings
Figure 5
Site 3 PTP300 configuration settings
Figure 6
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Master repeater CPS settings
Figure 7
Figure 8
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Peer 1 repeater CPS settings
Figure 9
Figure 10
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Peer 2 CPS settings
Figure 11
Figure 12
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MOTOTRBO and ADSL (no VPN)
Another way of providing IP Site Connect service across sites, which (in some cases) may not
have microwave (wireless broadband) connectivity, is to use ADSL. In order for such a system to
work, the WAN port of the router/modem at the Master site must have a static IP address. This
static IP address is allocated by the internet service provider for which there is an additional (large)
monthly fee.
Since the majority of bandwidth usage will be outbound, the ISP has to configure the service for
high upload rate - in most cases it is the other way around. Most ADSL connections are designed
for users to browse the web and download emails thus the majority of the bandwidth will be
consumed by downloading videos (Youtube) and pictures.
Figure 13
The above Router has been configured to provide 6,9MBps downstream and only 733kbps
upstream. In a MOTOTRBO network, consisting of three repeaters, the upstream will be around
80kbps and the downstream around 16kbps.
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Figure 14
Radio
Both
Router
Device
ID
Radio IP
Master IP
LAN IP
Gateway IP
DHCP
WAN IP
Master
1
192.168.10.1
0.0.0.0.0
196.168.2.110
192.168.2.1
N/A
ADSL Master Router
N/A
N/A
196.168.2.1
84.59.32.11
84.59.32.131
Peer 1
2
192.168.10.1
84.59.32.131
Assigned3
Assigned3
N/A
ADSL Router
N/A
N/A
196.168.2.1
Assigned2
Assigned2
Peer 2
3
192.168.10.1
84.59.32.131
Assigned3
Assigned3
N/A
ADSL Router
N/A
N/A
196.168.2.1
Assigned2
Assigned2
Radio UDP Port = 50000
1 Assigned by ISP (Fixed)
2 Assigned by ISP (DHCP)
3 Assigned by Local Router (DHCP)
In the above diagram, the repeaters are connected to the internet via ADSL modems. A typical
ADSL modem (router) is a sophisticated device that connects to the Internet Service Provider
using ADSL and provides connectivity for several computers via Ethernet and WiFi. The ADSL
router then transfers IP data between the computers and the internet. The computers connected to
the router can connect to the internet via the router. On top of that, the router provides some
degree of protection to the computers against attackers.
In the MOTOTRBO radio network, the repeaters would connect to the internet (WAN) in the same
way a computer would despite being a fairly simple device.
Site 1
Site 3
Site 2
The Internet via WAN
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Figure 15
The above screenshot shows how the UDP port would be mapped in the ADSL Router. The above
setting says that any UDP port 50000 traffic that arrives on the WAN, must be forwarded to IP
address 192.168.2.110 (i.e. the Master DR3000).
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MOTOTRBO and ADSL (with VPN)
One way of providing IP Site Connect service across sites which may not have microwave
connectivity, is to use ADSL. To overcome the requirement for a static WAN IP address at the
Master site, is to use VPN (Virtual Private Networking). VPN offers an additional benefit in that IP
packets transferred across the internet are encrypted thus providing the customer additional
communications security.
As the name suggests, VPN creates a virtual private network on the internet. This makes all the
sites seem as if they are on the same network. Most importantly, the VPN also eliminates the need
for a static IP WAN address at the Master site. The Master repeater will still need to be configured
with a static IP address on the LAN but this is fairly simple.
The VPN however will create additional consumption as the various routers in the network maintain
the connection.
Figure 16
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Figure 17
Radio
Both
Router
Device
ID
Radio IP
Master IP
LAN IP
Gateway IP
DHCP
WAN IP
Master
1
192.168.10.1
0.0.0.0.0
196.168.2.110
192.168.2.1
N/A
ADSL Master Router
N/A
N/A
196.168.2.1
Assigned1
Assigned1
Peer 1
2
192.168.10.1
196.168.2.110
Assigned1
Assigned1
N/A
ADSL Router
N/A
N/A
196.168.2.1
Assigned1
Assigned1
Peer 2
3
192.168.10.1
196.168.2.110
Assigned1
Assigned1
N/A
ADSL Router
N/A
N/A
196.168.2.1
Assigned1
Assigned1
Radio UDP Port = 50000
1 Assigned by ISP (DHCP)
2 Assigned by Local Router (DHCP)
Site 1
Site 3
Site 2
The Internet using VPN via WAN
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Further reading
MOTOTRBO System Planner
MOTOTRBO IP Site Connect Integration Guide
TCP/IP For Dummies ISBN: 978-0-470-45060-4 http://bit.ly/tYzb12
Networking For Dummies ISBN: 978-0-470-53405-2 http://bit.ly/tEeJnn
Bandwidth link calculation for MotoTrbo: on http://download.ard.co.za & on CPS DVD
Authored and compiled by Philip Hime (Alcom Radio Distributors) in collaboration with Wayne
Holmes (Motorola Solutions)

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