NENA Development Conference | October 2014 | Orlando, FloridaNENA Development Conference | October 2014 | Orlando, Florida
Local PSAP IP Network Infrastructure and NG9-1-1
Michael Smith, DSS
Nate Wilcox, Emergicom
Jim Lockard, ENP, Consultant
NENA Development Conference | October 2014 | Orlando, Florida
What we’ll cover
Network Requirements
Common for any ESInet
Special PSAP Requirements
Things that will drive a PSAP
network design
NENA Development Conference | October 2014 | Orlando, Florida
What is an ESInet?
Just the network
Not the NG9-1-1 Core Services
Includes hardware and software
Designed to support the NG9-1-1 Core
Services and Other Public Safety
Applications
NENA Development Conference | October 2014 | Orlando, Florida
Is a PSAP network just another ESInet?
Yes!
And, of course, no!
It’s an ESInet with a few additional
requirements
NENA Development Conference | October 2014 | Orlando, Florida
What major factors drive PSAP network design?
The applications, services, and
interfaces it must support
The critical nature of 9-1-1 itself
Policies
NENA Development Conference | October 2014 | Orlando, Florida
PSAP Virtualization and network design
Elements of a PSAP could be
anywhere
But the design drivers remain the
same
NENA Development Conference | October 2014 | Orlando, Florida
The i3 solution
The i3 solution: NENA 08-003 (STA-
010)
NG9-1-1 Core Services
A PSAP is a Service itself
The i3 specifications drive network
requirements common to PSAP
networks
NENA Development Conference | October 2014 | Orlando, Florida
The i3 solution
ALI – Automatic Location Identification PSAP – Public Safety Answering PointECRF – Emergency Call Routing Function BCF – Border Control Function ESRP – Emergency Services Routing Proxy ESInet– Emergency Services IP Network
ALI Interface
i3 CompliantOriginatingNetwork
i3 ESInet
Legacy PSAP Gateway
Legacy NetworkGateway
ESRP
Legacy PSAP
BCF
i3 PSAPB
CFESRP
ECRF
MF/E-MF/DTMF
SIP
SIP
SIP
LegacyOriginatingNetwork
SIP
MF/SS7
LoST LoST
SIP
ECRF
NENA Development Conference | October 2014 | Orlando, Florida
Is a Domain really required?
Yes!
Why can’t I just have a “peer” or
“workgroup” style network?
NENA Development Conference | October 2014 | Orlando, Florida
What other common infrastructure is required?
For managing and monitoring
For protecting and securing
For reliability and availability
For ensuring quality of service
NENA Development Conference | October 2014 | Orlando, Florida
Security for Next-Generation 9-1-1
Security for Next-Generation 9-1-1
(NG-SEC)
Security is driver for network design
PSAPs must not be the weak link
NENA Development Conference | October 2014 | Orlando, Florida
Emergency Services IP Network Design for NG9-1-1
A NENA Informational document
Outlines issues to consider
Provides guidance for design
Applies to all ESInets
NENA Development Conference | October 2014 | Orlando, Florida
Emergency Services IP Network Design for NG9-1-1
OSI Layers 1, 2 and 3
Availability and Reliability
Network Security
Performance
Traffic Engineering and more…
NENA Development Conference | October 2014 | Orlando, Florida
Supporting PSAP interfaces to the serving ESInet
Application Interfaces drive some
underlying network requirements
SIP Call Interface
Additional Data
Management and Monitoring
NENA Development Conference | October 2014 | Orlando, Florida
Performance requirements
Bandwidth requirements
Media and Metadata
Event and Media Recording
Traffic Prioritization
NENA Development Conference | October 2014 | Orlando, Florida
Availability and Reliability
What is “five nines”?
How do you achieve five nines?
What’s the difference between
Availability and Reliability?
MTBF and MTTR
NENA Development Conference | October 2014 | Orlando, Florida
Network Management and Monitoring
ESInets must be monitored
Mechanisms for monitoring:
SNMP – v3 vs. v2
Traffic Monitoring
Syslog – what it does
Proprietary mechanisms
NENA Development Conference | October 2014 | Orlando, Florida
Network Management and Monitoring
Mechanisms for Managing ESInets
As-built documentation
Service Level Agreements
Traffic
Capacity / Trending Analysis
Configuration Management
NENA Development Conference | October 2014 | Orlando, Florida
PSAP Connectivity (OSI Layer 1)
The Last Mile
Copper, Fiber, RF, Satellite
Reliability and Availability
Redundant and Diverse Paths
NENA Development Conference | October 2014 | Orlando, Florida
The data link layer (OSI Layer 2)
T1/T3
Frame Relay
ATM
MPLS
Metro Ethernet
NENA Development Conference | October 2014 | Orlando, Florida
The IP Layer (OSI Layer 3)
Dynamic Routing Protocols
There are choices
OSPF, EIGRP, etc.
The choices drive design requirements
NENA Development Conference | October 2014 | Orlando, Florida
IPv4 and IPv6
IPv4 is what we’ve seen for years:
179.166.10.1
We’ve run out of public addresses
IPv6 allows for more addresses:
2001:0db8:85a3:0042:1000:8a2e:0370:7
334
Build for IPv6 out of the box
NENA Development Conference | October 2014 | Orlando, Florida
Traffic Engineering
Study your bandwidth requirements
Media consumes a lot – video and
audio the most
Text consumes less, but is still
significant
Bandwidth and DDOS attacks
NENA Development Conference | October 2014 | Orlando, Florida
Quality of Service
What is QoS
Why do we need it
What design criteria does it drive?
NENA Development Conference | October 2014 | Orlando, Florida
Prioritizing network traffic
What is “DiffServ”?
Why does the i3 architecture require
it?
What elements must support it?
How does that drive network
design?
NENA Development Conference | October 2014 | Orlando, Florida
What’s special about a PSAP network?
The PSAP network has the same
basic requirements as any ESInet –
it is an ESInet
But it has a few additional ones,
driven by the job a PSAP does
NENA Development Conference | October 2014 | Orlando, Florida
What’s special about a PSAP network?
The PSAP will likely be connected to other
networks that require different, and possibly
conflicting network policies
Data services drive these policies (NCIC, LEO
DB)
How do we mediate these?
And mitigate risks to disparate networks?
NENA Development Conference | October 2014 | Orlando, Florida
Policy impact on network design, and vice-versa
How do your policy choices impact
the network you design?
How will your network design
impact your policy choices?
NENA Development Conference | October 2014 | Orlando, Florida
The “separate networks” issue
Why do vendors sometimes insist
on a separate physical network for
their applications?
Why does it matter?
Why is that a problem in NG9-1-1?
NENA Development Conference | October 2014 | Orlando, Florida
Interconnection to other networks
Connecting to certain data services
like NLETS and LEO carry restrictive
security requirements
Connecting to less-secure networks
introduce additional risks
NENA Development Conference | October 2014 | Orlando, Florida
The “Internet”
Both the PSAP and the ESInet that
provides NG Core Services to it will
likely be connected to the Internet
Why?
What special design problems does
this introduce?
NENA Development Conference | October 2014 | Orlando, Florida
Local “Administrative” networks
Most PSAP will be connected to one
or more “Administrative” networks
Examples?
How does this impact network
design?
NENA Development Conference | October 2014 | Orlando, Florida
Questions, Comments?
NENA Development Conference | October 2014 | Orlando, Florida
NENA Development Conference | October 2014 | Orlando, FloridaNENA Development Conference | October 2014 | Orlando, Florida
This Is How a Title Slide LooksChris Nussman, Comms DirectorNENA: The 9-1-1 Association
NENA Development Conference | October 2014 | Orlando, Florida
Successful Slides & Presentations
Bullets, not paragraphs
Keep the type big so those in the back
of the room don’t have to squint
Clip art is not OK
Don’t read from slides; ask
questions
Top Related