Transcript Kein Folientitel

Information
and Communication
Networks
IP Backbone requirements for NGN
VoIP
Michael
DICKMANN
Agenda
Pourquoi converger?
NGN, VoIP: le point de vue de Siemens
VoIP: IP Network design principles
VoIP: Selection of IP Network elements
Backbone Solutions
Information and Communication Networks
7/7/2015 ICN CN 4H page 2
VoIP: Quality of service requirements
Why Next Generation Networks?
Needs of customers:
Optimized
utilization
Efficiency of
infrastructure
Information and Communication Networks
Revenue
generating
Applications
Self-managing
Networks
Demand-oriented
Infrastructure & Technology
7/7/2015 ICN CN 4H page 3
Additional
revenues
TDMTechnology
Features
SURPASS-enhanced NGN
NGN IPTechnology
NGN IPTechnology
Comparable
costs
TDMTechnology
Time
Take advantage of the “Economies of scale” and the
service richness of Next Generation Network
Information and Communication Networks
Time
7/7/2015 ICN CN 4H page 4
Costs/connection
Challenges and Opportunities
A simple TDM-NGN comparison
Augmentation de la bande passante
- effet sur le Core IP -
1.000.000
100.000
Internet
10.000
Voix
1999
2000
2001
2002
2003
Effet de la croissance du traffic voix (Virtual Trunking)
sur le Core IP: néant
bande passante pour la voix << bande passante de l’Internet
Information and Communication Networks
7/7/2015 ICN CN 4H page 5
1.000
1998
Delta Voix
Challenges and Opportunities
Advantages of a new architectural paradigm
PSTN Switch
SS7

Switching matrix
Line Card
Trunk I/F
Line Card
Trunk I/F
Signalling Gateway
Softswitch


Distributed MSF* Architecture
SS7


Subscriber
Gateway
Subscriber
Gateway
IP/ATM
Network
Integrated functionality
Proprietary platforms and partly
proprietary feature development
Standard IN interface for externallyprovided services
Trunk
Gateway

Trunk
Gateway

Open platforms
Open interfaces between all
components
Softswitch provides Trunk- and LocalSwitch features
Gateways support various media stream
conversions
*MSF=Multiservice Switching Forum; defined a widely accepted architectural model for carrier convergence
Information and Communication Networks
7/7/2015 ICN CN 4H page 6
Call Processor, SS7 Processor
Maintenance & Administration
Agenda
Pourquoi converger?
NGN, VoIP: le point de vue de Siemens
VoIP: IP Network design principles
VoIP: Selection of IP Network elements
Backbone Solutions
Information and Communication Networks
7/7/2015 ICN CN 4H page 7
VoIP: Quality of service requirements
SURPASS Solution overview
Switch
MSC
Virtual Trunking
Phone
IP PBX
IAD & CPG
Packet Local Switch
Voice over Broadband
LEX consolidation, replacement,
user growth
any service over your
broadband subscriber line
SIP, multimedia Applications
SURPASS
Switch
Switch
Switch
Switch
PSTN
NextGen Applications
SIP-based multimedia,
.....across any network
we SURPASS
Information and Communication Networks
MSC SCPSCP
PLMN
IN
NGN
Signaling
Overlay Network
the universal signaling bridge
for all networks
7/7/2015 ICN CN 4H page 8
PBX
IP
Phone
the packet based core
for fixed and mobile networks
SURPASS Virtual Trunking
Seamless integration into any network environment
hiQ
Softswitch
SCP
NetManager
INAP
SS7 over IP
hiS 700
STP
STP
SS7
hiR
hiG
hiG
IP Core Network
Fits seamlessly into any network environment
supporting full PSTN, ISDN feature set !
Information and Communication Networks
7/7/2015 ICN CN 4H page 9
SS7
SURPASS Packet Local Switch
Full TDM access to the NGN
MGCP/ACP
PSTN Network
SS7
Management
System
NetManager
MGCP
MGCP
bearer
SURPASS hiQ
Softswitch
SURPASS hiS
Signaling Gateway
PBX
SURPASS hiG
Trunk Gateway
SURPASS hiR
Resource Server
RDLU
Any-vendor
access equipment
SURPASS hiX
Access Gateway
QoS enabled
IP Core Network
The Solution for all Voice Services – All services over IP
Information and Communication Networks
7/7/2015 ICN CN 4H page 10
DLU
SURPASS Voice over Broadband
Provide full featured PC telephony
SS7
PSTN / ISDN
SIP
QoS IP backbone
SIP clients and terminals,
e.g. Microsoft Windows
Messenger
IP-IP GW
IP PBX’s,
e.g.
H.323+
IP clients and terminals
IP Clients - the future of communications today!
Information and Communication Networks
7/7/2015 ICN CN 4H page 11
H.323/SIP
SURPASS NextGen Applications (NGA)
multimedia across any NGN
Easy to develop Presence Conferencing
end-user
applications
SURPASS - open
Application Interfaces
CORBA
Messaging …
SIP
Switch
Open Interfaces for easy application development
Information and Communication Networks
7/7/2015 ICN CN 4H page 12
SURPASS network
SURPASS Signaling Overlay Network
Bridging all networks
Bridging all networks
PSTN
MSC
PLMN
SCP
IN
NGN
All network technologies
 TDM
 (ATM)
 IP
Full signaling interoperability between today´s and future networks
Information and Communication Networks
7/7/2015 ICN CN 4H page 13
Switch
All network types
 Fixed Networks (PSTN)
 Mobile Networks (PLMN)
 Next Generation Networks
(NGN)
SURPASS Streamline your NGN business with NetManager
NetManager for
SURPASS
NGN Management Architecture
Cross Domain Management & Customer Care
Open Interfaces
 centralized management of all
SURPASS solutions and products
 fast service introduction
 automation of operational
processes with value added
applications
 open interfaces for easy integration
into Cross Domain Management
solutions
Information and Communication Networks
Service Management
Applications
Network Management
Applications
Base System
NetManager
SURPASS
7/7/2015 ICN CN 4H page 14
 guarantees cost saving and
revenue generation
SURPASS Solution overview
Switch
MSC
Virtual Trunking
Phone
IP PBX
IAD & CPG
Packet Local Switch
Voice over Broadband
LEX consolidation, replacement,
user growth
any service over your
broadband subscriber line
SIP, multimedia Applications
SURPASS
Switch
Switch
Switch
Switch
PSTN
NextGen Applications
SIP-based multimedia,
.....across any network
we SURPASS
Information and Communication Networks
MSC SCPSCP
PLMN
IN
NGN
Signaling
Overlay Network
the universal signaling bridge
for all networks
7/7/2015 ICN CN 4H page 15
PBX
IP
Phone
the packet based core
for fixed and mobile networks
Agenda
Pourquoi converger?
NGN, VoIP: le point de vue de Siemens
VoIP: IP Network design principles
VoIP: Quality of service requirements
Backbone Solutions
Information and Communication Networks
7/7/2015 ICN CN 4H page 16
VoIP: Selection of IP Network elements

Lot of things to keep track of in next generation networks
 Topology / IP addressing
 Router requirements
 IGP
 BGP
 Utilization
 Blocking
 Bandwidth
 MPLS
Information and Communication Networks
7/7/2015 ICN CN 4H page 17
IP Network Design – a Huge Area
Hierarchical Design Principles:
Dual-homing to the core with access redundancy
Core
Access
Core Layer:
Switching speed
Distribution Layer:
Topology change isolation
Controlling the routing table size
Traffic aggregation
Information and Communication Networks
Access Layer:
Feed traffic into the network
Control access
7/7/2015 ICN CN 4H page 18
Distribution
Strategy for successful IP addressing

Allocate IP addresses carefully.
If you don’t address your network right, you have no hope of scaling
to truly large sizes.

Keep two primary goals in mind:
 Controlling the size of the routing table
 Controlling the distance topology change information must
travel (by controlling the work required when topology changes)

The primary tool for accomplishing these goals is summarization.
Information and Communication Networks
7/7/2015 ICN CN 4H page 19

Selecting the Appropriate IGP:
OSPF or IS-IS
1
...
10
1
...
10
T640
1
OSPF
AREA
132.0.1/24.
.
.
Both protocols are over 15 years old, using graph
theory that’s at least 40 years old

Both protocols are (even still) works in progress

They’re both good protocols

Use the one that makes the most sense to you
132.0.0/20
132.0.0/24
ERX

0.0.0.X
T640
We probably choose IS-IS
AREA 0.0.0.0
T640
1
...
10
POP 1
L1-Only
Area 49.0001
ERX
L1-L2
L1-L2
POP 2
L1-Only
Area 49.0002
6
1
...
10
L1-L2
L1-L2
OSPF
L1-L2
L1-L2
132.0.0/18
POP 1
L1-Only
Area 49.0003
L1-L2
IS-IS
Information and Communication Networks
132.0/16
Towards
Public Internet
L1-L2
POP 2
L1-Only
Area 49.0002
7/7/2015 ICN CN 4H page 20
Core L2-Only
Area 49.0000
Agenda
Pourquoi converger?
NGN, VoIP: le point de vue de Siemens
VoIP: IP Network design principles
VoIP: Quality of service requirements
Backbone Solutions
Information and Communication Networks
7/7/2015 ICN CN 4H page 21
VoIP: Selection of IP Network elements
Core
Core Layer Requirements
Proven stable IS-IS, OSPF and BGP4

Full-featured MPLS for traffic engineering
and multi-service applications

Deterministic line-rate forwarding
performance under network instability

Low and predictable latency

Per-flow load balancing

Broad range of interfaces,
scalable to STM-16 / STM-64 speeds

High port density and
flexible configuration
System reliability

Information and Communication Networks
Core Layer
7/7/2015 ICN CN 4H page 22

Distribution
Distribution Layer Requirements
Proven stable IS-IS, OSPF and BGP4

Full-featured MPLS for traffic engineering
and multi-service applications

Deterministic line-rate forwarding
performance under network instability

Low and predictable latency

Per flow load balancing

Broad range of interfaces,
scalable to STM-16 / STM-64 speeds

High port density and
flexible configuration
System reliability
Dual router APS
(Automatic Protection Switching)


Information and Communication Networks
Core Layer
Distribution Layer
7/7/2015 ICN CN 4H page 23

Peering
PEERING
Internet Exchange
Core Layer
Distribution Layer






Full-featured MPLS for traffic engineering
Scalable and robust BGP-4 routing protocol

Complete user-friendly routing policy
implementation to simplify management
Broad range of interfaces, scalable to
STM-16 / STM-64 speeds

Consistent line-rate forwarding performance
under network instability
Small form factor for space-limited
deployment

Low power consumption
Sampling and port mirroring for traffic visibility
Per-flow load balancing
Rate limiting for peering connections
Per flow policing

Traffic classification / DSCP re-writing

Destination address verification

Destination Class Usage (DCU)


Information and Communication Networks
7/7/2015 ICN CN 4H page 24
Peering Requirements
Agenda
Pourquoi converger?
NGN, VoIP: le point de vue de Siemens
VoIP: IP Network design principles
VoIP: Quality of service requirements
Backbone Solutions
Information and Communication Networks
7/7/2015 ICN CN 4H page 25
VoIP: Selection of IP Network elements
Impact of Router Performance on Per-Hop Latency






Route lookups
Policies and classification functions
Ingress and Egress queue management
Switch fabric access and SAR functions
MPLS and other encapsulations
VPN management
Background processes on shared CPU‘s (SNMP, statistics,
etc.)
Statements in red are typically performed on both core and edge
routers
Edge routers: VPN management, classifications, support a
multitude of customer terminations, and tunnel encapsulations
Core routers: Basic packet forwarding as fast as possible
Information and Communication Networks
7/7/2015 ICN CN 4H page 26

Internet Processor II

Packet Sampling

Deterministic Load Balancing
120.0%
100.0%
80.0%
60.0%
40.0%
20.0%
0.0%
Increasing Number of Packet Filters
Juniper
Information and Communication Networks
CPU Based
Router
7/7/2015 ICN CN 4H page 27
Packet Filtering

Blocking

Counting

Logging

Explicit Forwarding

CoS Classification

Granular Policing
% of Line Rate

Edge Routing Solutions



The edge is where services are defined, created and
controlled
The edge is where the change in networks will occur
Network edge as the first strategic investment
Services create revenue directly
 Core investments are in advance of revenue

Even in slower periods, customers and network
applications all depend on and demand new or
faster services

Everything on IP
Information and Communication Networks
7/7/2015 ICN CN 4H page 28

Line Rate / Pkt Size
60 Bytes
768 Bytes
1500 Bytes
E1
320 ms
4 ms
8 ms
E3
10 ms
137 ms
267 ms
STM-1
3 ms
40 ms
77 ms
STM-4
0.77 ms
10 ms
19 ms
Extended bursts of 1500-byte packets entering the router
via an STM-4 connection fill E1 connection leading to
immense per-packet latency and possibly packet loss
Edge router requirement:

Congestion control functions

Support of specific traffic classes

Support of multiple queues per interface
Information and Communication Networks
7/7/2015 ICN CN 4H page 29
Low-Speed Connections: The Interface Bottleneck
Quality of Service –
Access vs. Core

At the edge, the access (subscriber) facing side of the edge
router has different QoS requirements than the core facing side

Access:
 Great number of IP interfaces (subscribers)
 4 – 8 queues per subscriber (IP interface) that
represent the traffic classes

10s of 000s of queues per port
Core:
 Low number of IP interfaces (uplink)
 4 – 8 queues per port that represent the traffic classes
 All access traffic (and queues) is aggregated into the
corresponding core queues (uplink)
Information and Communication Networks
7/7/2015 ICN CN 4H page 30

Customer Class-Based Queuing

Each customer is serviced by 4-8 unique hierarchical queues

Strict priority and hierarchical round robin
Supports QoS SLA per customer

Hierarchical
Weighted Queues
C-OC-12/STM-4
DS1
DS-3
Information and Communication Networks
7/7/2015 ICN CN 4H page 31
F-E1
Juniper Networks
Next-Generation IP Edge Router ERX

High Density (low power, small size) to
conserve scarce point-of-presence
(POP)
rack space
 Hundreds of physical circuits/shelf
Thousands of logical circuits/shelf
High bandwidth capacity with 100%
Wire Speed Performance
Hardware redundancy and other Carrier
reliability features provide high
availability required to meet SLAs
Supports wire speed QoS crucial to
deployment of the business-grade
Internet



Information and Communication Networks
7/7/2015 ICN CN 4H page 32

Port-Based Queuing




Each physical port is serviced by 4-8 queues
All customer traffic terminating on the same physical port is
aggregated into a common scheduler
Delivers Class-Based Queuing services
No deterministic subscriber traffic / no QoS SLA
C-OC-12/STM-4
DS1
DS-3
Information and Communication Networks
7/7/2015 ICN CN 4H page 33
Class-Based
Queues
F-E1
Agenda
Pourquoi converger?
NGN, VoIP: le point de vue de Siemens
VoIP: IP Network design principles
VoIP: Quality of service requirements
Backbone Solutions
Information and Communication Networks
7/7/2015 ICN CN 4H page 34
VoIP: Selection of IP Network elements
Juniper Networks
Next-Generation IP Edge Router ERX

High Density (low power, small size) to
conserve scarce point-of-presence
(POP)
rack space
 Hundreds of physical circuits/shelf
Thousands of logical circuits/shelf
High bandwidth capacity with 100%
Wire Speed Performance
Hardware redundancy and other Carrier
reliability features provide high
availability required to meet SLAs
Supports wire speed QoS crucial to
deployment of the business-grade
Internet



Information and Communication Networks
7/7/2015 ICN CN 4H page 35

Juniper Networks’ Carrier Class Routers:
M-series and T-series Value Added


Best-in-class IP routing platforms
 Predictable performance
 Carrier-class availability
Unparalleled flexibility and control
 Purpose-built modular operating systems
 Rich packet processing feature set
 Hardware only forwarding path
 Low latency, jitter
 Wide range of interfaces
 Interface portability
Services Without Compromise
 Flexible Class of Service (CoS) capability
 Classification, queuing, marking
 Security
 Rate limiting, filtering, sampling,
counting, logging, IPSec, others
Information and Communication Networks
T-series
E-series
M-series
7/7/2015 ICN CN 4H page 36

Comprehensive Solutions
Platform
Capacity
Deployment Scenario:
640
320
T-series
160
Core Transport
40
10
5
M-series
ERX Family
Subscriber Services
Metro Ethernet
Information and Communication Networks
Edge Routing
7/7/2015 ICN CN 4H page 37
Edge Services
20
Michael DICKMANN
ICN CN4 H
+49-89-722-47151
[email protected]
Information and Communication Networks
7/7/2015 ICN CN 4H page 38
Thank you for your attention