BRKSPG-2012.pdf - Cisco Live

#CLUS

Eric ORTHEAU – Senior Product ManagerBRKSPG-2012

Automation and Operation at scale for the new Segment Routing/EVPN-based 5G Backhaul network

Agenda

© 2018 Cisco and/or its affiliates. All rights reserved. Cisco Public#CLUS

• Introduction

• 5G Backhaul: Requirements and Specificities

• Benefits of Segment Routing and EVPN

• Impact and New Challenges for Network Management

• Solutions and Best Practices to Address these Challenges

• Key Takeaways

3BRKSPG-2012


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© 2018 Cisco and/or its affiliates. All rights reserved. Cisco Public 4

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4BRKSPG-2012


Introduction

5BRKSPG-2012

• xHaul (BackHaul, FrontHaul, MidHaul)

• Segment Routing and EVPN

• Management

• Orchestration

• Path Computation

• Assurance

• Making all this working together

What we’ll discuss today…Some of the 5G Keywords…

5G Backhaul: Requirements and Specificities


Shift to 5G Will Be Led by New Services

So

urc

e: N

GM

N

Ultra Reliability(Wherever + Whenever)

Ultra Capacity

and Coverage

Ultra High-Speed(up to 10 Gbps to cell site)

Ultra Low Latency(1 ms End-to-End)

Massive Device

Connectivity

UHD Video

AR/VR

Average 1 Gbps per

device

Broadband access

everywhere

Tactile Internet

Extreme real-time

communications

Natural Disaster

Lifeline communications

High Speed Train

Higher

user mobility

Sensor Networks

Massive

Internet of Things

E-Health Services

Ultra-reliable

communications

Broadcast

Services

Broadcast-like services

+

1G

5G

BRKSPG-2012 8


Service Trends per Mobile Generation

Ubiquitous Broadband Wireless w/ Low latencyUser BW

1Gbps

100 Mbps

10 Mbps

1 Mbps

100 kbps

2G 3G 3.5G 4G 5GLatency

User Latency

1000ms

100 ms

10 ms

LTE• Voice/VoIP• MMS• Web/Email• Apps• Streaming• Collaboration• High res multimedia• Multi-user gaming• High res video• M2M

HSPA• Voice• SMS/MMS• Web/Email• Apps• Streaming• Collaboration• Low res Video

WCDMA• Voice• SMS• MMS• CS-Video• Email

GSM/EDGE| CDMA2K• Voice/SMS• WAP• BB/Email

5G• VR applications• Tactile Internet• Multiple ultra Hi-Def

video (4K) per home• 10 – 100X

connected devices per BS

• Massive M2M

5G

BRKSPG-2012 9


Enhanced Mobile Broadband (eMBB)

Massive Machine Types

Communications (mMTC)

Ultra-Reliable and Low

Latency Communications

(URLLC)

Significant Capacity Increase

Increase services scale, coverage

Deterministic latency; ultra fast recovery

10X ~ 25X increase in capacity

Highly scale, intelligent, service aware transport

Predictable, fast, end to end failover solution

8K TV, HD Telepresence

Smart building, smart cities

eHealth, Autonomous vehicles, industrial

automation

Example Services

Primary Requirements

Transport Infra. Requirements

Services

5G Services Requirements

5G

BRKSPG-2012 10


Carrier Aggregation, VoLTE, COMP, eICIC,

Small Cell

Higher Bandwidth to users, Less call drops,

less interference, better

coverage

Massive Device Connectivity (Smart Building, Logistics Tracking and fleet

management, Smart Meter, Smart Agriculture)

Secure Infrastructure

Phase & Frequency Synchronization

Network Slicing

Clocking as a Service (AAV)

Automation

Virtualization

Network Visibility & Insight

10Gig to cell site

1Gig per User Equipment (UE)

OTT & UHD Video

Extreme Real time communication

(Autonomous Car, Remote Manufacturing,

VR/AR)

Expand Capacity

Low Latency

High Scale,Reliability,Security

New Revenue Generating Services

Operational Simplicity and

Agility

Mobile Apps Enhanced Experience

5G Network Requirements

5G

BRKSPG-2012 11


5G Transport Requirements

• 1-10 Gbps connection to the end devices (RRU, eNB)

• 100 us ~ 10 ms end-to-end latency

• 10-100x number of connected devices

• Nanosecond accuracy through packetized timing

• 99.999% availability

• 100% coverage

• Services aware

• End to end secured

• Cost:

• CAPEX: $/bit; $/unit

• OPEX: Deployment, Management, Troubleshoot

5G

BRKSPG-2012 12


Key Enabling Technologies for 5G

User Plane/SDN Forwarder

Service Functions


Service Functions

Service Functions


Mobility Control Plane

Charging and Policy

Authentication and Security

Legal Intercept

Enterprise

Edge ComputingInternet

MVNO

5G

Connected Commerce

Fronthaul Backhaul WAN

WANController

vRAN vCore

Mobility Control Plane


InternetMobile

Backhaul

CachingMultiCastUniCast

ManagedVideo

Network Slice

Service Function

Control Sub DB IoT Core Network

MBB Core Network

Streaming Camera Core Network

CUPS: Control/User Plane Separation Cloud Scale Networking with Cloud RAN/Core and SD-WAN

Mobile network to scale with video using MEC Network Slicing

Amazon

HuluNetflix

HBO GO

5G

BRKSPG-2012 13


Cisco Unified xHaul Architecture

Fronthaul

DU

DU

xHaul

Backhaul

MEC

CU

Automation

TopologyTelemetry

ProvisioningTraffic Engineering

Bandwidth & Latency Optimization

EPC5GC

Timing (SyncE, PTP), TSN

L3VPN or EVPN

Segment Routing (MPLS or IPv6)

5G

BRKSPG-2012 14


What does 5G Fronthaul look like?

• Fronthaul: Transport between functional blocks (e.g., baseband processing & radio frequency blocks) of a cellular base station

• Still being defined

• 5G Fronthaul will be based on Ethernet: names you’ll hear:• CPRI over Ethernet (eCPRI, 802.1CM and IEEE P1904.3)

• Radio over Ethernet (IEEE P1904.3)

• Next Generation Fronthaul Interface (NGFI) = IEEE P1914.1 and P1914.3

• xRAN

• …

• Fronthaul will require a broad range of SLAs (Service & Transport) starting with very strict requirement (Bandwidth, Latency, Timing, etc…)

16BRKSPG-2012


Traditional D-RAN Phase 1: C-RAN Phase 2: Cloud-RAN

BBU co-located with RRU

Dedicated BBUs

Challenging for CoMP

Centralized baseband units with potential for pooled baseband

CPRI interconnect ~2.4 Gbps/ 20 MHz channel

Enables CoMP and other LTE-A

Not virtualized

Virtualized baseband with RRC connection state shared across

BS

CPRI over Ethernet or NGFI Radio over Ethernet (future)

New functional split

Service Integration (MEC)

FrontHaul: C-RAN to Cloud RAN…

Site A

Site B Site C

BBU

BBU BBU

Central Office

Site A

Site B

BBUBBUBBU

Front Haul

Site C

Mini-Data Center

Site A

Site B

BBUBBUvBBU

Front Haul

Site C

MECMECMECBackhaul

BRKSPG-2012 17


What Sync does LTE-A/5G Need?

• State of art in current mobile network technologies uses the same level of (frequency) synchronisation as at the dawn of GSM!

• First new requirement for 20+ years is phase synchronisation, supporting new services & increased capacity density, namely:• Massive MIMO, CoMP…

• Small Cells and heterogeneous networks (“HetNets”)

• New radio technologies developed for the air interface require stringent timing

< 3μS θ

(Phase

Offset)

±1.5μS θ

±1.5μS θ

Synchronization will need to be properly managed and assured

BRKSPG-2012 18


• Flexibility to adapt and aggregate legacy & Next Gen interfaces & services.

• IP routing enables specialized and distributed application deployments

• Seamless extension of SDN model up to Radio

• Enabling Network Slicing & Traffic Steering

• Accommodate diverse applications with different characteristics – Delay, Jitter & Loss matrix.

• IP network Analytic intelligence

• Uniform Operational model across business lines – Residential or Enterprise

• Multi-Radio (Mobile or non-mobile services) support

• Scalable service awareness

• Consistent end-to-end OAM

• Performance Management for different application

Why End-to-End IP

19BRKSPG-2012

OAM Services

ConvergedNetwork

SDN &

Analytics

5G

Benefits of Segment Routing and EVPN


Segment Routing and EVPN for 5G xHaul

• Combination of Segment Routing for Transport and EVPN for Services

• Advanced capabilities for Service Orchestration and Programmability

• Segment Routing and EVPN provide the scalability and flexibility that the 5G xHaul requires

• Able to support the large variety of 5G services: eMBB, mMTC, URLLC…

21BRKSPG-2012


Unified MPLS MPLS SR with controller SRv6

Services

Transport

BGP-LU

RSVP-TE

MPLS LDP

IGP

IP/MPLS

BGP-LU

RSVP-TEServices

Transport

Services

Transport

BGP

T-LDP

IGP/SR

IP/MPLS

SDN

Overlay

IGP

IPv6/SR

SDN

SRv6

Cisco 5G-Ready Network: TransportSimplified Protocol Stack in transport

BRKSPG-2012 22


ACE - FrameworkXTC

PE1

PE2 PE4

PE3

A1 B1

NSO WAE EPN-M

BGP/BGP-LS

RR

IGP-SRIGP-SRIGP-SR

PCEPPCEP

Transport: Segment-Routing

Services: BGP - L3VPN/L2VPN(EVPN)

Controller/Orchestration:

• XTC Provides inter-IGP domain path, WAE - WAN optimization

• NSO Service provisioning

• EPN-M Service provisioning/Service assurance/Network Visibility/Fault Management

Anycast-GW Anycast-GW

Applications

APIs

ProvisioningNSO

Path Computation/ WAN optimization

XTC/WAEEPN-M

BGP

IP

IGP/SR

BRKSPG-2012 23


Foundation for Network Operations Simplification and Automation, and Service Agility via Programmability

Simplification of network protocolsImproved scalability

Simplification of Traffic Engineering

Application enabled policy using SDN techniques

Support MPLS & v6 Forwarding

Built-in Redundancy & HA

Universal Forwarding PlaneFrom Access to DC

Automated 50ms convergence

Cisco 5G-Ready Network: TransportSegment Routing: Key capabilities

BRKSPG-2012 25


What is EVPN?

• EVPN family introduces next generation solutions for Ethernet services

• BGP control-plane for Ethernet Segment and MAC distribution and learning over MPLS core

• Same principles and operational experience of IP VPNs

• L2 and L3VPN in same instance - optimal forwarding

• Multihoming

• Multi-vendor solutions

• Cisco is author of most RFCs/Drafts

EVPN-VPWS

P2P Multipoint

EVPN PBB-EVPN

EVPN RFC 7432

RFC 7623

draft-ietf-bess-evpn-vpwsRFC 7432

BRKSPG-2012 26


Access

Aggregation

Understanding Todays Service Creation

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HW Appliances

Legacy Central Office

Metro Network Domain Core Network Domain Data Center Domain

Limited Cross-domain Automation

Centralized Delivery

of Services

VNF

IPMPLS

L2VPN

Ethernet

L3VPN VXLAN

E2E service provisioning is lengthy and complex:

Multiple network domains under different management teams

Manual operations

Heterogeneous Underlay and Overlay networks

VNF


ACE “Unified Network Transport” for Service Creation

28BRKSPG-2012

Cloud Scale Networking

Central Office

Metro Network Domain Core Network Domain Data Center DomainAccess

Compute Leaf Spine

Virtualize

Transform the CO into a data center

to enable distributed service delivery

and speed up service creation Simplify

Unified underlay and overlay

networks with segment

routing and EVPN

VNF VNF

VNF

VNF

L3VPN/ EVPN

Segment Routing

Automate

E2E Cross-domain automation

with model-driven programmability

and streaming telemetry

Controller


Forwarding Plane

Control Plane

Orchestration Plane

Programmable paths

Simplified operation

Optimal use of resources

Rapid convergence

Local features: Timing, QoS, Telemetry, OAM/PM…

High Throughput

Centralized control plane for network wide policy

& control

Real-time checks and updates

Advanced algorithms for complex service SLAs

Network wide service definition and deployment

Network-wide orchestration replaces the individual

device config

WAE

XTC

SDN Controller

NSO

Service Plane

Cisco 5G-Ready Network: TransportOrchestration, Control and Forwarding

BRKSPG-2012 29


• Path Protection with multi-domain disjoint paths at node, link or SRLG level

• Paths can have same origin node or separate nodes

Guaranteed Disjoint Paths Low Latency Path

• Latency sensitive services prefer low latency paths – Default IGP lowest cost path typically provides highest bandwidth

Avoidance Reachability Multi-Domain(ODN)

• Avoid a node/network due to e.g, security, reliability, competition concerns

• Head-end node does not have path to a destination node – requests the path to XTC using On-Demand Next Hop.

• Simplification and scalability of service deployment

Tokyo

Bejing

London

100G

100G

1G

Low

Latency

PathHigh Bandwidth Path(Default)

NO GUARANTEE OF SERVICE

GUARANTEED SERVICE

SAME FIBER CONDUIT & SAME POWER PLANT

DIFFERENT FIBER CONDUIT & DIFFERENT POWER PLANT

Without Segment Routing With Segment Routing

A B

B

C

A D

High Bandwidth Path(Default)

Avoid C

Path

Cisco 5G-Ready Network: TransportSDN Controller: Basic PCE use-cases (Cisco XTC)

BRKSPG-2012 30


• Traffic engineering for SLA bandwidth guarantee • Monitor network utilization to reach 100% of network

utilization

Bandwidth Optimization Multi-Layer Path Optimization

• L1 and L3 network visibility and correlation enabling multi-layer optimal path computation and SLA monitoring automation

Congestion based rerouting Predict/Plan node/network changes/impact

• Deploy tactical LSP tunnel to alleviate congestion• LSP initiated by WAE

• “What if” analysis for network planning – test protection strength, change traffic patterns, change network topology, etc

• Optimize maintenance operations• API exposure for 3rd party applications

WAE

XTC

Cisco 5G-Ready Network: TransportSDN Controller: Advanced use-cases (Cisco WAE)

BRKSPG-2012 31

Impact and New Challenges for Network Management


• Scale: 10 times the 4G Backhaul

• End 2 End architecture from cell-tower up to DC

• Network Slicing

• Service awareness

• Guaranteed Low Latency and High Bandwidth

• Accurate timing management

5G Backhaul: New Challenges (A recap)

Network Slice

Service Function

Control Sub DB IoT Core Network

MBB Core Network

Streaming Camera Core Network

BRKSPG-2012 33

Segment Routing and EVPN will be key components to address these new

challenges


Plan & Design

(Establish the Intent)

Validate & Deploy

(Implement the Intent)

Operate

(Monitor the Intent)

Optimize

(Optimize the Intent)

AUTOMATION

&

ANALYTICS

Intent based Network Operations Lifecycle

Challenge for automation: How can we help customers to deploy large scale and flexible services while simplifying operations?

BRKSPG-2012 34


Challenges and Outcomes for SR/EVPN for 5G

Challenges Outcomes

Scale and End to End architecture Network Staging for SR and EVPN

Deploy new services at scale Deploy the Services

Make the network service aware Path Computation & Simulation

Assure and manage the deployed servicesControl Bandwidth and Latency

Network and Service Assurance

Optimize the transport and anticipate on new service deployments

Transport Optimization and Capacity Planning

BRKSPG-2012 35

Solutions and Best Practices to Address these Challenges


A View of Automation & Analytics Portfolio, today

Service, Network &

Device Fault,

Performance Reporting,

Visualization, Inventory

& Topology

Traffic

optimization

within the network

WAEWAN Automation

Engine

Plan &

Optimize

BW & Topology

Optimization

Real Time Path

Compute and

Topology

XTCXR Transport

Controller

Deliver

Model Driven

Orchestration

EPNM

Evolved Programmable Network Manager

Operate

Dynamic Inventory

XTC

SP Network Automation & Analytics

Implement Agile

Service Orchestration

across WAN, DC, NFVI

NSONetwork Service

Orchestrator

Deploy

Model Driven

Orchestration

NSO

BRKSPG-2012 37


Cisco NSO (Network Service Orchestrator)

• Simplified service configuration end2end

• Create, delete, roll-back

• Definition of templates for recurrent actions

• Highly flexible defining services

• Model-driven services and device configuration

• Multivendor support

• Scalable with hierarchical structure

• Cross domain service creation – DC, WAN

BRKSPG-2012 38


Cisco XTC (“SR PCE”) Overview

• XTC is based on IOS-XR (implemented as XR process)

• can run on a router in the network or in a virtual machine running IOS-XRv on a stand-alone server

• Stateful Path Computation Controller (PCE)

• Path computation algorithm designed to optimize Segment Routing

• Dynamic path SLA management

• Automate network changes to ensure path compliance

• Multi-domain: Real-time reactive feed via BGP-LS/ISIS/OSPF from multiple domains; computes inter-area/domain/AS paths

• Northbound and Southbound standard interfaces

• Redundant and scalable solution

• Multi-vendor support

XTC

BGP-LSPCEP

REST API

WAE 3rd party App

BGP-TE

BRKSPG-2012 39


WAE (Wan Automation Engine) Overview

• Model-driven path visibility and computation engine

• Simulates, optimizes, and activates paths in a network

• Supports multi-vendor and multi-layer environments

• Enables applications for planning, peering, forecasting, traffic engineering to be developed via a programmatic interface

COLLECT

MODELMANAGER

OPM

DEPLOY

NIMO

DESIGN

Collection

• SNMP

• Netflow

• BGP-LS (XTC)

• Telemetry

Deploy

• NSO Device Mgr

• PCEP (XTC)

• Controller plug-in

Optimization and PredictionWAE Design is a core ”app”

BRKSPG-2012 40


EPN Manager (EPNM) Overview

• Network discovery and inventory

• Nodes, Interfaces, Pseudowire, TE Tunnels, Segment Routing policies, QOS…

• L2 Services, L3VPN, MPLS TE, Circuit Emulation

• Service provisioning and/or discovery

• Service and Network Assurance

• Fault Management

• Performance Management

• Interfaces traffic, …

• Y.1731, QOS…

• Performance/Fault data overlay on topology maps

• Service testing: Y.1564, BERT…

• Multi-layer Visualization

BRKSPG-2012 41


Outcome #1: Prepare the Network for SR/EVPN for 5GNetwork/Service Inventory & Topology Visibility

Challenge: How do we make sure the network is ready to support 5g xHaul with Segment Routing?

• Network Inventory and Network Staging

• End to End Network Inventory from cell tower to DC

• Network staging: Zero Touch Provisioning, Control Plane configuration

• End to End Service discovery with underlying Segment Routing Transport

• Service Overlay

• Transport overlay

• Service Multi-Layer trace with underlying LSPs

• Show traffic mapping

BRKSPG-2012 42


Evaluating New Customer

Challenge: Can a new service using 4Gbps at the San Francisco PoP be supported

• Model and predict impact of the new service within minutes

• Full Traffic Matrix and Topology

• Traffic Trending/Forecasting

• Model Network adds/moves/changes.

Identify flows for new customer

Simulate results

Add 4Gbps to those flows

Congested link in REDBRKSPG-2012 43


What-If Analysis

Challenge: Impact of adding a new circuit between two nodes

• Network change analyzed and impact across global network can be modeled

• Extensive network wide failure analysis

• ‘Worst Case’ analysis of Network

• Risk Analysis of planned outages

• Model Node, Circuit and SRLG failovers

Congestion betweenCHI and DET

Congestion relieved

Specify parameters

Add new circuit

BRKSPG-2012 44


Outcome #2: Deploy the ServicesDeploying a large number of services at scale

NE

XTC

Optimization

Activation/Operations

6

1

34

2

5

1. Provision the service (NC/Y)

• PW: “foo”, NH:”1.1.1.1”

• TE Policy: “Low Latency”

2. NE to request path (PCEP)

• NH:”1.1.1.1”

• PCEP policy: “TE metric”

3. XTC to compute path

4. XTC to reply path (PCEP)

• ERO: 18001, 18002, 16001

5. NE to report (PCEP)

6. XTC to update optimization with newer LSP (YANG)

7. Discover Service and LSPs and start assuring them

BGP-LS

Topo Change

7

XTC

Challenge: How can we deploy easily a large number of services with Segment Routing Path Computation and Optimization?

BRKSPG-2012 45


Challenge: How do we guarantee “Low latency” and proper Bandwidth usage in the network?

• Leverage Bandwidth usage measurement, TE Metrics and OAM to show Segment Routing Efficiency

• Monitor ‘Low Latency Services’ on the network topology map by calculating TE metric and leveraging OAM Tools

• Verify ‘Low Latency service’ traffic after physical routes have been optimized

• Offer both latency and bandwidth Optimization Options

Outcome #3: Check the Segment Routing EfficiencyControl the “Low Latency” and “Bandwidth Usage”

BRKSPG-2012 46


Challenge: How do we optimize the network for 5g Use Cases and new

service deployment?

• Simulate all of link failure scenarios and

automatically calculate link utilization in the

worst case.

• Forecast future traffic demand increase based on the traffic trend of the whole

network

• Make sure a new service can be safely deployed

Outcome #4: Network Simulation and OptimizationForecast traffic and prepare new services deployment

BRKSPG-2012 47


Challenge: How can I visualize my services and the underlying transport characteristics?

• Provides the visual tools to identify quickly Service Paths with Bandwidth utilization, Latency information and alarms levels

• Up-to-date and accurate Network Topology Map based on Reactive Inventory

• Overlay of key information: bandwidth, latency, alarms for a quick assessment of the network

Outcome #5: Service Topology Map

BRKSPG-2012 48


Outcome #6: Service Assurance and Operational MetricsControl and Manage the Services at scale

Challenge: How can I operate the SR-based services and Infrastructure at scale?

• Service Multi-layer trace with underlying LSPs

• Service Impact and Alarm Correlation

• Service Performance and Service OAM

• End 2 End Service Testing (Service Turn-Up)

• Timing management

49BRKSPG-2012


Network Service Assurance and Troubleshooting: Available Tools

50BRKSPG-2012

Service OAM QOS Service Testing Dashboards Troubleshooting Tools

Carrier Ethernet Y.1731ELMI

Provisionedwith service

Y.1564/RFC2544

Service, Interfaces, QOS, Y.1731

Multilayer trace (P2P services only)PW OAMMPLS OAM

L3VPN IP SLA Provisionedwith service

IP SLA « on demand » Service, Interfaces, QOS, IP SLA

MPLS OAMVRF OAM

Circuit Emulation Y.1731 (Pseudowire)

Template BERT Test Service, CEM,Y.1731

PW OAMMPLS OAMMultilayer trace

MPLS Interface MPLS Performance Management

TE Tunnel MPLS OAM


A New Useful OAM Tool:Link Delay Measurement Protocol

Local-end Remote-end

PM Response Packet

PM Query Packet

TX Timestamp T1 RX Timestamp T2

(phase1) One Way Delay = (T2 – T1)(future) Two-Way Delay = (T2 – T1)

+ (T4 – T3)TX Timestamp T3RX Timestamp T4

99.1.2.1

99.2.1.2

Information distributed in IGP

and via BGP LS to the controllerBRKSPG-2012 51


Showing SR Policy Overlay with Delay

52BRKSPG-2012

Prefix SID is displayed

Other information could be displayed like

Link Delay or IGP Weight


Assurance: Performance Dashboard and ThresholdsBandwidth Utilization, QOS Efficiency, Latency…

53BRKSPG-2012

Large range

of predefined

dashboards

for

performance

management

and analysis


Real-Time Active MonitoringEnd-to-End Y.1731 Test Results for L2 Services

Monitoring Service

Performance with

Y.1731

BRKSPG-2012 54


Mapping Outcomes to Cisco Products

Challenges Outcome Product/Solution

Scale and End to End architecture Outcome #1: Prepare the Network for Segment Routing

EPNM

Deploy new services at scale with dynamic path computation

Outcome #2: Deploy the Services NSO for the provisioning part (Activation)XTC for the Path Computation (BGP)

Control Bandwidth and Latency Outcome #3: Check the Segment Routing Efficiency

EPNM

Optimize the transport and anticipate on new service deployments

Outcome #4: Network Simulation and Optimization

WAE

Assure and control the Transport network and Services

Outcome #5: Service Topology Map EPNM

Assure and manage the deployed services

Outcome #6: Operational Metrics (Bandwidth, QOS, Latency), Service Testing and Troubleshooting

EPNM

BRKSPG-2012 55


Goal: A Complete 5G Automation Solution

NSO WAE

A1

B1

A3

B3

A4

B4

A6

B6

A7

B7

A9

B9

C2 C5 C8

A2 A5 A8

B2 B5 B8

Metro 1 CORE Metro 2

T1

T1’

EPNM

XTC

NSO: Service orchestration

and deployment

EPNM: Service & Network

Discovery and Assurance

WAE: Planning & Optimization

XTC: Path Compute Engine for

Segment Routing and MPLS-

TE

BRKSPG-2012 56


Use Case1: Orchestrated Network Optimization

• The Problem: When congestion happens, operator has to jump through multiple systems before eventually running the optimization to remove the hotspot.

• The Solution: With service orchestration through NSO and close-loop path computation with WAE, operator can execute network optimization through a single pane of glass.

• The Value: Faster MTTR to issues and increase customer satisfaction with quick response.

Seamless workflow to run network optimization ensure rapid response to SLA violation

1. Operator invokes optimization service that will request WAE to compute an optimized path based on current network state

2. WAE will compute and provide the optimization outcome to NSO service, which evaluates result based on defined business logic to decide if optimization is required

3. NSO orchestrates deployment of optimization changes to the network.

4. EPNM discovers the changes from the network -device, network, LSP & service

5. EPNM monitors the network - LSP fault/performance

BRKSPG-2012 57


Use Case 2: Seamless Network Optimization• The Problem: Network state changes continuously and operators are having problem tracking and

reacting to rapid network changes that often lead to congestions• The Solution: With WAE, XTC and Segment Routing, a closed loop network state tracking enables

WAE with Tactical TE engine to continuously track changes and react to optimize the network. EPNM monitors the KPI policy.

• The Value: Real-time optimization that enables the network to continuously run optimally.

Network Optimization with continuous tracking of network state

1. Network state changes are detected by XTC and WAE which will trigger the Tactical TE engine

2. Tactical TE engine checks for policy violation which has already been set by operator

3. If violation occurs, optimization algorithm will determine if Tactical TE operation is required

4. If yes then SR-based Traffic Engineering path will be deployed by XTC

5. EPNM discovers the changes from the network -device, network, LSP & service

6. EPNM monitors the network - LSP fault/performance

BRKSPG-2012 58


Use Case 3: Bandwidth on Demand• The Problem: A Service Provider’s customer would like to acquire service that would provide them

with a certain bandwidth guarantee, for e.g to run backup service• The Solution: Bandwidth on Demand engine in WAE will compute a path that will guarantee the

bandwidth requirement for the service• The Value: Provider can offer a value-added service to existing services that could be monetized

Closed-Loop Network Optimization with continuous tracking of network state

1. An operator instantiates a new service with bandwidth requirement

2. The new service with the bandwidth requirement is deployed to the network

3. The service head-end queries XTC and WAE for the service path based on the bandwidth constraint

4. WAE compute service path that meet the bandwidth requirement based on current network state

5. Computed path is then deployed to the network.

6. Notification is sent to EPNM7. EPNM monitors the network. Can also monitor

and validate the SLA

BRKSPG-2012 59

A Workflow example for Segment Routing Assurance

© 2018 Cisco and/or its affiliates. All rights reserved. Cisco Public#CLUS BRKSPG-2012 61

Network Map with Service List

List of Services including SR Policies

Services are discovered by EPNM. Some of them can also be provisioned using EPNM


SR Policy OverlayPrefix SID and IGP Information can be presented on the MAP

Selected SR Policy is shown on the map

BRKSPG-2012 62


SR Policy Overlay with Delay and IGP Metrics

63BRKSPG-2012

Prefix SID is displayed

Other information could be displayed like Link Delay or IGP Weight

BRKSPG-2012 64

SR Policy 360 with alarms and SR Details

The 360 View is our single pane of glass for all types of services:• Service Parameters• Traffic KPIs• Alarms• Endpoints• Related Services• Path details (new for

SR Policy)

SR Policy details (Header) would include:• States• Color• Head-End• End Point• Binding SID• Path Preference

Actions Button give access to Show Command and OAM Tools


SR Policy: Path Details

Preferred path details are displayed here

BRKSPG-2012 65


SR Policy: Attached services

Services attached attached to this SR Policy

BRKSPG-2012 66


EVPN Multi-Layer View with SR TE Policy

End to End service multi-layer trace with underlying SR TE Policy, MPLS and Ethernet layers

BRKSPG-2012 67

Key Takeaways


Key Takeaways

• Some aspects of the 5G xHaul final design are still to be defined

• Segment Routing and EVPN are the right technologies to address the scalability and flexibility requirements for Transport

• Orchestration and Automation are fundamental for a successful deployment

• Bandwidth, Latency and QOS are critical and need to be managed/assured properly

69BRKSPG-2012

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Questions?

BRKSPG-2012 71


Demos in the Cisco campus

Walk-in self-paced

labs

Meet the engineer

1:1 meetings

Related sessions

Continue your education

BRKSPG-2012 72

Thank you

#CLUS

Backup Slides


Cisco WAECisco EPNM

Cisco SP Orchestration and Automation Portfolio

Cisco Crosswork

Cisco NSO

Health Insights

Situation Manager

Change Automation

Data Platform

Network Insights

BRKSPG-2012 75


Service Provider Cisco education offerings

77

Course Description Cisco Certification

Deploying Cisco Service Provider Network Routing (SPROUTE) & Advanced (SPADVROUTE)

Implementing Cisco Service Provider Next-Generation Core Network Services (SPCORE)

Edge Network Services (SPEDGE)

SPROUTE covers the implementation of routing protocols (OSPF, IS-IS, BGP), route manipulations, and HA routing features; SPADVROUTE covers advancedrouting topics in BGP, multicast services including PIM-SM, and IPv6;

SPCORE covers network services, including MPLS-LDP, MPLS traffic engineering, QoS mechanisms, and transport technologies;

SPEDGE covers network services, including MPLS Layer 3 VPNs, Layer 2 VPNs, and Carrier Ethernet services; all within SP IP NGN environments.

CCNP Service Provider®

Building Cisco Service Provider Next-Generation Networks, Part 1&2 (SPNGN1), (SPNGN2)

The two courses introduce networking technologies and solutions, including OSI and TCP/IP models, IPv4/v6, switching, routing, transport types, security, network management, and Cisco OS (IOS and IOS XR).

CCNA Service Provider®

Implementing Cisco Service Provider Mobility UMTS Networks (SPUMTS);Implementing Cisco Service Provider Mobility CDMA Networks (SPCDMA);Implementing Cisco Service Provider Mobility LTE Networks (SPLTE)

The three courses (SPUMTS, SPCDMA, SPLTE) cover knowledge and skills required to understand products, technologies, and architectures that are found in Universal Mobile Telecommunications Systems (UMTS) and Code Division Multiple Access (CDMA) packet core networks, plus their migration to Long-Term Evolution (LTE) Evolved Packet Systems (EPS), including Evolved Packet Core (EPC) and Radio Access Networks (RANs).

Cisco Service Provider Mobility CDMA to LTE Specialist;Cisco Service Provider Mobility UMTS to LTE Specialist

Implementing and Maintaining Cisco Technologies Using IOS XR (IMTXR)

Service Provider/Enterprise engineers to implement, verification-test, and optimize core/edge technologies in a Cisco IOS XR environment.

Cisco IOS XR Specialist

For more details, please visit: http://learningnetwork.cisco.comQuestions? Visit the Learning@Cisco Booth

BRKSPG-2012

http://learningnetwork.cisco.com/

BRKSPG-2012.pdf - Cisco Live

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