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Wireless SeminarMassy – July, 1st

N2X MultiservicesTest Solution

R&D & Lab validation of triple play infrastructure and

services, from broadband access through carrier

core/edge.

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N2X leads Agilent’s Triple Play Solutions

Triple Play andNetwork Security

NetworkTester

Infrastructure and Services

N2X MultiservicesTest Solution

R&D System Verification Installation & Maintenance Management

3Play + 3G mobile – Quadruple play

+Drive test integration– E2E Analysis

Signaling Analyzer

Triple PlayAnalysis

Triple Play Analyzerand DNA

Simplifying Triple Play Test Complexity Through The Technology Life Cycle

VoIP IMS

NGN

Handheld forTriple Play

FrameScope™ ProWirescope™ Pro

R&D System Verification Deployment TroubleshootingManagement

SAN & FCTester

Storage

N2X verifies network devices and systems, in the lab, “out-of-service”

R&D-strength testing

N2X is usually not placed in ‘live’ networksN2X is mostly used before

deployment

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Where is N2X aimed?

Core Router

Edge / Access Router

Access Node(DSLAM or PON OLT)

Ethernet Aggregation (L2) Switch

Home NetworkEdge / AccessIP/MPLS

CoreContent Servers

Broadband Network Gateway BNG /

Broadband Remote Access Server B-RAS

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Core IP Router

Cisco CRS-1 Juniper TXHuawei 5000E NEC CX5220

High-capacity core routers process large amounts of traffic and routing information in the core of service-provider networks.

They are often situated at Internet Point-of-Presence (POP) locations and may connect to other carrier networks.

Key pain points• Scalability: Ensure the router can handle huge traffic and routing

loads over many high-speed interfaces• High Availability: Verify that the router can maintain 99.999%

availability during periods of network instability

IP/MPLS Core

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Edge / Access

Edge/Access router, BNG / B-RASAn Edge/Access or Multi-Service router, Broadband Network Gateway (BNG), or Broadband Remote Access Server (B-RAS) manages subscriber services, applies policies, and can act as a PPP or DHCP server.

Key pain points• Multiple Services: Validate IPTV, VoIP, data applications / TCP,

multicast, and business VPN deployment scenarios• Access Protocols: Measure DHCP, DHCPv6, PPPoX, and ANCP

performance and scalability• QoS: Verify per-flow Quality of Service and prioritization

Redback SmartEdge Juniper E-Series Cisco 10000 Alcatel-Lucent 7750

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Ethernet Aggregation (layer-2) SwitchThe Ethernet Aggregation (or Ethernet Services) Switch cost-effectively aggregates traffic, and is optimized for Ethernet services.

Key pain points• Scalability: Verify Ethernet and/or MPLS switching from

many GbE interfaces to a few high-speed 10GbE interfaces• Layer-2 Protocols: Test conformance and performance of Ethernet OAM Fault

Management, Spanning Tree (xSTP), Link Aggregation (LACP), BFD, Provider Backbone Bridging, Mac-in-Mac (PBB/MiM)

• Carrier Ethernet Services: Validate E-Line/E-LAN services shaping & policing

Ethernet Aggregation

Alcatel-Lucent 7450 Siemens Surpass 6670 Fujitsu Atrica A-4100 World Wide Packets LE-3300

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Access Node / IP DSLAM / OLTAccess Nodes are also known as Access Concentrator, DSL Access Multiplexer or Optical Line Terminator (OLT).

They terminate DSL or Passive Optical Network (PON) lines, aggregate subscribers, and assist IPTV multicast services.

Key pain points• Traffic: Analyze forwarding performance (latency, loss, throughput)• Multicast: Verify IGMP/MLD snooping (which accelerates IPTV channel-

zapping) and multicast performance• Access Protocols: Gauge DHCP relay agent and PPPoE performance &

scalability

Ericsson EDN288x Huawei SmartAX 5300 ECI Hi-FOCuS Alcatel-Lucent 7300

Access

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The 5 key application areas

Hits the Buzz Words

MDI= 0:0Delay Factor (DF) & Media Loss Rate (MLR)

• Carrier EthernetLACP

RSTP & MST

CFMVPLS

CIR, EIR, CBS and EBS parameters

spanning tree

S-VLAN

MEP Y.1731

802.1ag

802.3ah

VPWS

Ethernet Virtual Circuits E-Line & E-LAN services

MEF 10, MEF 14

PBB-TE

Q-in-Q Mac-in-MacPWE3

BFD

E-OAM

PBB/MiM

• Routing, MPLS and VPNs

Route flapping

failover Fast re-route

Graceful RestartRoute flapping

VPLS

G-MPLSRFC 2147bis L2 & L3 VPNs

O-UNI

mVPN

LMP

MPLS OAM

Kompellla

BGP4, OSPF, IS-IS and RIP

RSVP

LDPControl Plane

• Access Protocols and Multicast

mVPN

IGMPMLD

PIMRendezvous Point

DHCP/DHCPv6 Relay agents PPP

PPPoEPPPoA

PPPoEoA

join/leave latency LAC and LNS devicesL2TP

PIM-SM

MDSP

IGMP SnoopingANCP L2C/L2CP

QoSSLAs

Packet loss, latency, throughput

Inter-arrival timepackets per second

traffic encapsulations forwarding

PriorityQ-in-Q VLAN tagswire-speed PDU payload

header

IPv6

• Traffic Generation, Analysis & QoS

W-RED

• Triple Play – IPTV, VoIP, DataIPTV QoE

Channel Zapping

HTTP, FTP, RTSP

SIP

TCP

MOS

Multi-Play

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Fundamental Test Scenario 1 - Functional Test“Does it work as it should?”

• Test device under normal and abnormal conditions

• Traffic (data plane) functional test

• Protocol (control plane) functional test

“Ping” Echo-Request Message

N2XPing Reply

DUT

Incorrectly formed Message

N2XAppropriate Error Message

DUT

Test DUT functionality under expected conditions

Test stability and response to unexpected stimulus

(negative testing)

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Fundamental Test Scenario 2 – Packet Performance“Does it perform?”

• Measure packet performance through a forwarding device

Send thousands streams of realistic traffic into the device

Each stream can represent a QoS level or traffic from an individual customer

Measure packets sent and received, latency, throughput, and lost and misdirected packets on each stream

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Fundamental Test Scenario 3 - Protocol Emulation “Does it scale?”

• Emulate routing, signaling and other protocols simultaneously, to simulate very large attached networks

• Measure protocol scalability

• Verify multi-protocol management

Because N2X accurately sends and responds to protocol messages, the

SUT thinks N2X is actually thousands of real devices

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• Measure performance during integrated traffic and protocol stress

• Measure delivery of services such as IPTV, MPLS VPNs and Carrier Ethernet OAM

Fundamental Test Scenario 4 Integrated traffic and protocol emulation

Combine traffic generation and protocol emulation

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Fundamental Test Scenario 5 – Conformance Test “Does it conform to industry standards?”

• Verify protocol conformance to IETF, IEEE & MEF standards

N2X sends the DUT a message and tests for a correct and timely response

Each N2X conformance test suite contains a hundred or hundreds of

unique test cases

Conformance helps ensure interoperability with network devices from other vendors

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Simulatedfailure

New traffic path

Simulatednetwork

N2X traffic source

Fundamental Test Scenario 6 – Restoration Time“Does it handle failures? How fast?”

• Measure recovery from a simulated device or link failure

Fault occurs here

Traffic failover

Failover (restoration)

time

Packet loss during failover

• Applies to many technologies– MPLS Fast Re-Route– Routing reconvergence– LACP single-link failure– Spanning Tree reconvergence– Bidirectional Forwarding

Detection– Ethernet CFM Continuity Check

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System switch

N2X system controller

N2X System Components:

• Chassis – 2 slot or 4 slot

• Controller – laptop or 2 levels of rackmount

• Software (3 tiers)

1. Packet only- including QuickTests

2. Emulation Software3. Productivity Advantage –

advanced pre-written tests

• Hardware – Test Cards

• Support & Software Updates

N2X Product Structure

N2X System

Local GUI or API SUT

Remote GUI/API

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N2X session-GUI/API model

…

test session1

Test session2 …

GUIs APIs GUIs APIsN2X controller – local GUIs and APIs

API on external computer

GUI on remote desktop

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Packets Application

Packets & Protocols Application

Conformance Productivity Applications

QuickTest

Automated Applications

Base Software

Emulation Software

N2X Product Structure

Ethernet OAM CFM

MS TV

LACP

IGMP

MLD

DHCP

DHCP V6

IPv4 Routing

IPv6 Routing

MPLS SignalingMulticast Routing

xSTP

BFD

Optical SignalingAccess

Protocols

MPLS OAM

L2 VPNs

Transport Application

XM CardsSONET/SDH

testing

XP & XP-2Cards

Packet testing

XR & XR-2 CardsProtocol & Packet testing

XS & XS-2 CardsHigh performance

P&P testing

OC48cPOS/FR 2 port

E7909A

10/100/1000 +SFP 4 port

N5551B

10 GbE & POSXFP LAN/WAN

1 portN5602A

OC3/12cPOS/ATM/FR

2 portE7907B

OC768c40Gb/s POS

1 portE7320B

10/100 Ethernet16 portE7906A

10/100 Ethernet4 port

N5550B

10 GbE & POSXFP LAN/WAN

1-portN5632A

10/100 Ethernet16 portE5215A

OC192/STM64 STS-1, 1 port

J7241A, J7242A

OC3/12c POS/ATM/FR

2 portE7907A

10/100/1000 +SFP EPON4 port

N5604A

10/100/1000+ SFP2 port

N5552B

10/100/1000+ SFP2 port

N5630B

OC48cPOS/FR2 port

E7909B

10/100/1000 +SFP4 port

N5553B

OC3/12/48 /STM16, 2 port

STS-1/VT J7244A, J7245A

10 GbEXFP LAN/WAN

1-portN5603A

Ethernet OAM Y.1731

Test cards

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Traffic Terminology• N2X Packets and Protocols traffic:

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Select traffic profile properties

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Configuring the traffic type and length

Specify the number of times the transmitter sends each PDU in the Current stream group before moving to the next stream group in the profile.

Specify the type of PDU (layer-2 or Layer 3) and its length.

Adds 20 bytes of test information to the payload and must be enabled if you want to gather statistics for the stream group.

Specify whether PDUs have a mixed length (None) or a range of incrementing , decrementing, or randomized lengths.

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Examples: Defining PDU lengths

Increment or decrement a range of PDU lengths by a specified step.

You can also create a random distribution of lengths within a defined range

Step 3: Configuring the traffic type and length

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Create protocol encapsulations Add a new layer (encapsulation ) to the existing PDU Delete the selected layer

Add a new Protocol

Expand to view all encapsulations and fields

View the entire PDU in hexadecimal format

Vary the value of a selected field of interest by adding a Field Modifier.

Hide the Encode Pane

Change Encapsulation

View Options of selected Field

Packet Preview

Field Modifier Options

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Edit PDU fields

Define a fixed field value for all packets in the stream group, or apply a field modifier to vary the fields value within the PDU.

Override a field to type an illegal value.

Apply a field modifier to vary the value of a field of interest. Modifiers can increment, decrement, randomize a range of values. You can also create a custom list of field values.

Indicates the number of streams defined in the stream group.

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Supported PDU types - GPT

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Custom PDU types: LTE/WiMax

• PDU fields and layout defined by .xml files

• User can construct packets of any type to simulate LTE protocolcontrol plane messages

• Use profile features to send protocol packets in sequence

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Packet capture in N2X

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Summary

• N2X generates high-scale, high-bandwidth IP traffic for realistic testing

• Protocol emulations for a large range of routing and access protocols

• PDU builder and capture features allow testing of new protocols used in IPoWireless

• High volume IP traffic testing remains vital