deploying carrier ethernet services on cisco...

Deploying Carrier Ethernet Services on Cisco ASR-9000

BRKSPG-2202

Kashif Islam – Solutions Architect

Nouman Jaferi – Customer Support Engineer

• Cisco EPN and Carrier Ethernet Architecture Overview

• Cisco ASR-9000 – A Quick Recap

• Carrier Ethernet Service Configuration Toolset

• Service Monitoring & OAM

• Services Orchestration through Controllers

• Conclusion

Agenda

Cisco ASR-9000 – A Quick Recap


• Cisco EPN and Carrier Ethernet Architecture




• Conclusion

© 2016 Cisco and/or its affiliates. All rights reserved. Cisco Public

ASR 9904

ASR 9001 / 9001-S

ASR 9006

ASR 9010

ASR 9912

High Density Service

Edge and CoreFlexible Service Edge

Compact, Powerful, Small

Access/Aggregation Routers

• Scalable, ultra high density service routers

• Perfect fit for large, high-growth sites

• >2Tbps/slot capability

• Optimized for ESE and MSEwith high M-D scale

• Perfect fit for medium to large sites

• 1Tbps/ slot capability

• Small footprint with full IOS-XR feature capabilities

• Perfect fit for distributed environments (BNG, Pre-agg etc.)

Fixed

240 Gbps

2 LC

8Tbps

8 LC

7 Tbps

10 LC

40 Tbps

20 LC

80 Tbps

4 LC

3.5 Tbps

Why Cisco ASR 9000 for Carrier Ethernet Services?

ASR 9922

*Total Fabric BW

nV Satellites

ASR 9000v

MSE E-MSE Peering P/PE CE Mobility Broadband

One Platform, One OS, One Family

BRKSPG-2202 5


IOS-XR EvolutionScalable, Resilient, Virtualized

Edge Routing

ASR 9000 Portfolio

Core Routing

CRS Portfolio

NG Core Routing

NCS 6000 Series

Virtual XR DP

X86 Virtual Router

NFV Virtual Router

IOS-XRv

Robust, Carrier

Class OS

Introduced on

CRS ASR 9000

Added

Virtualization,

64-bit Added

with NCS 6000

NFV for vPE,

vRR Introduced

BRKSPG-2202 6


ASR-9K in Cisco EPN Architecture

DCISP Data Center

NCS6KASR9K

nV, AN, MPLS,

EthernetMPLS

(SR, LDP, BGP, mLDP, nV)

CoreMPLS (SR, SRTE, mLDP, BGP)

AccessCE/NID Preggregation

InternetMPLS

(SR, LDP, BGP, mLDP)

ASR900/NCS 4206

ASR9K

ASR9000v

ASR920/NCS4201

ASR920-12SZ-IM/NCS 4202

Aggregation

ASR9K ASR907/

NCS4216

Service Edge

ASR9K

Internet

Gateway

ME1200

NCS5500

NCS5000

NCS5000NCS5000

NCS5500

XTC

BRKSPG-2202 7

Cisco EPN Carrier Ethernet and Mobile Backhaul Architecture






• Conclusion


Cisco EPN Framework

Service

Orchestration

SDN

Interfaces

Packet

Transport

Services MEF Services Mobile Infrastructure Business VPNResidential

Services

CLI,

SNMP

Netconf,

YangBGP Openstack/vCenter PCEP

ME1200

ASR907/903

ASR920

ASR9000v

NCS5500

NCS5000

ASR9K

NCS6K

XRv-9000

CSR1Kv

Physical VirtualSegment Routing SR Routing, SR-TE, SR-LDP Interworking, BGP LU

Orchestration, Service and Policy Implementation

(NSO enabled by Tail-f)

Multi Layer Manager

(EPN-M, CSM)DC & NFV Controller

(ESC, VTS, APIC)Open Source Controller

(OSC, ODL)

Multilayer WAN

Automation Engine

(WAE, XTC)

Multi Vendor End to End Management & Orchestration (Physical & Virtual)

Applications Rapid Service Deployment

Service-Intent API

SDN / APIs

Optical

Transport Optical

IPoDWDM

NCS 4201/4202

NCS 4206/4216

BRKSPG-2202 9


MEF Services in an EPN EnvironmentMPLS, Ethernet and/or nV Access Network

E-Line

Ethernet Port, 802.1q or 802.1ad

E-LAN VPLS, PBB-EVPN (includes E-TREE), EVPNEthernet Port, 802.1q or 802.1ad

AGN-SE

E-LAN VPLS, PBB-EVPN (includes E-TREE), EVPN

Ethernet Port, 802.1qEthernet 1q/ 802.1ad PWHEWith Spoke Pseudowire Multiplexing per Access Node or per Access Port

E-Line

Ethernet Port, 802.1q

PAN-SE

Pre-AggCore AGGAGG

iBGPvRR1 vRR2

Access Access

BRKSPG-2202 10

Carrier Ethernet Services Configuration Toolset






• Conclusion


Carrier Ethernet Configuration Toolset

Architecture Simplification• Pseudowire Headend

• Network Virtualization (nV)

Forwarding• VLAN Tag Manipulation

• Bridge Domain, Bridged Virtual Interface

• Local Connect, Ethernet over MPLS (EoMPLS)

• Virtual Private LAN Service (VPLS)

Frame Classification• Ethernet Flow Points with EVC infrastructure

• Intelligent Layer 2 Sub-interfaces

• Flexible VLAN Tag Matching

BRKSPG-2202 12

Traffic Classification


Ethernet Flow Point

• EVC Infrastructure introduces to the concept of an EFP

interface r/s/module/port.<sub-intf no.> l2transport

<match criteria commands> (VLAN tags, MAC, Ether type)

<rewrite commands> (VLAN tags pop/push/translation)

<feature commands> (QoS, ACL etc)

intG

ig 0

/3/0

/0int Gig 0/3/0/0.100

BRKSPG-2202 14


EFP Flexible Tag ClassificationThe Longest Match Rule and the default option

• Longest match for VLAN tag provides configuration flexibility

dot1q 10

dot1q 10 sec 100 exact

dot1q 10 sec 128-133

int

Gig

0/3

/0/0

default

10

10010

13010 200

13020 200

10 200

BRKSPG-2202 15

Traffic Forwarding


Point to Point

Forwarding

• Flexible VLAN Tag Manipulation

• Push, Pop, Translate

• Any combination up to 2 VLANS

• 1 to 1, 1 to 2, 2 to 1 or 2 to 2

• Uses “rewrite” keyword

• Symmetric Application

Traffic Forwarding Through an EFP

Traffic Manipulation Multipoint Forwarding

• MEF defined E-LINE services

• Allows 2 sites to connected via EFPs

• Two Primary Mechanisms

• Local Connect

• EoMPLS

• MEF defined E-LAN, E-TREE services

• Allows 2+ sites to connected via EFPs

• MAC based Forwarding

• Bridge-Domain, BVI

• VPLS, H-VPLS

Configured under “l2vpn” CLI

BRKSPG-2202 18


Lin

ecard

Local Connect

• Local Connect used to forward traffic between two EFPs on the same device

• No MAC Learning is performed, since only two EFPs are part of the service

• Service origination and termination on the same device e.g. Hairpinning

Lin

ecard

l2vpn

xconnect group CISCO

p2p LCONNECT

interface GigabitEthernet0/0/0/4.1


INT

F

INT

FEFP EFP

BRKSPG-2202 19


Ethernet Over MPLS

• Point to Point Psuedowire/L2VPN for Carrier Ethernet E-LINE services

• No MAC address learning performed

Lin

ecard

l2vpn

xconnect group CISCO

p2p VPWS


neighbor 1.1.1.1 pw-id 100

INT

FEFP EoMPLS PWLin

ecard IN

TF

Lin

ecard

INT

F EFP

Lin

ecard IN

TF

BRKSPG-2202 20


Bridge Domains

• Provides classical L2 switching

• Bridge groups for logical grouping of customers

• 2 or more EFP’s assigned to Bridge Domains

• MAC Learning and Forwarding performed by Bridge Domains

Lin

ecard

Lin

ecard

l2vpn

bridge group CISCO

bridge-domain BD1

interface TenGigE0/1/0/0.1



INT

F

INT

FEFP

EFP

Lin

ecard

INT

FEFP

BRKSPG-2202 21


L3 Routing using Bridged Virtual Interface (BVI)Interface gig 0/0/0/1.50 l2transport

encapsulation dot1q 50

rewrite ingress tag pop 1 Symmetric

Interface gig 0/0/0/5.20


ipv4 address 2.2.2.2 255.255.255.0

Interface bvi 20 BVI

ipv4 address 1.1.1.1 255.255.255.0

l2vpn

bridge group cisco

bridge-domain domain50

Interface gig 0/0/0/1.50

Interface gig 0/0/0/2

routed interface bvi 20 BVI


vfi 60


L3 InterfaceBVI

L2 sub-interface

Bridge-DomainPhysical interface

Bundle interface

L2 bundle sub-interface

L2 PsuedowireVPLS. VPWS

BRKSPG-2202 22


MultiPoint ServicesVPLS

Lin

ecard

Lin

ecard

l2vpn

bridge group CISCO

bridge-domain BD1



vfi CISCO-VFI



INT

F

INT

FEFP

Lin

ecard

INT

FEFP

Lin

ecard

INT

F PW

PW

BRKSPG-2202 23


Traffic Isolation for Multi Point Services

• Split Horizon is disabled on AC by default

• Split Horizon is enabled on PW by default

• 3 Split Horizon groups are defined in IOS-XR

• Group 0 is default

• Group 1 – Any PW configured under the “vfi”

• Group 2 – Any AC configured with “split-horizon” keyword.

Split Horizon Groups

BRKSPG-2202 24


Lin

ecard

MultiPoint ServicesH-VPLS

Lin

ecard

Lin

ecard

l2vpn

bridge group CISCO

bridge-domain BD1



vfi CISCO-VFI



INT

F

INT

F

Lin

ecard

INT

F

INT

F PW

PW

PW

PW

BRKSPG-2202 25


H-VPLS

Access Node

Access Network

IP/MPLS

Access Node

AcessNode

Access Network

IP/MPLS

EdgeNode

Access Node

Access Node

Access Node

EdgeNode

EdgeNode

EdgeNode

Core Node

Core Node

Core Network

IP/MPLS Domain

BRKSPG-2202 26


Bringing Everything TogetherASR 9000 Flexible Ethernet SW Infrastructure

EoMPLS PW

VPLS PW

EoMPLS PW

L3

X

P2P VPWS

P2P local

connect

Multipoint bridging

Bridging

Bridging

Routing VPLSEFP (Ethernet Flow Point) or sub-interface

Flexible VLAN tag

classification

Flexible VLAN tag

rewrite

Flexible Ethertype

(.1Q, QinQ, .1ad)

Flexible service mapping and multiplexing

L2 and L3, P2P and MP services concurrently on the same port

BRKSPG-2202 27

Operational Simplicity Network Virtualization (nV)


nV Overview • Not to be confused with Network Function Virtualization (NFV)

• Available in 2 flavors: nV Edge and nV Satellite

• nV Edge:

• Clustering technology – two ASR-9K's clustered as 1

• Works on Edge ASR-9K's

• Provides redundancy and availability

• nV Satellitle

• Geared towards a distributed edge

• Standalone devices act as remote ASR-9K linecards

• ASR-9K acts as the “brain” for remotely distributed “line card”

BRKSPG-2202 29


MPLS

ASR 9000 Carrier Ethernet Technology Network Virtualization - nVResidential, Biz, Mobile, Cloud

Native L2Low Cost, Plug & Play

IRB creates L3 overlay

network to support TDM

STP/PVST/RPVST

G.8032, REP, MC-LAG

TDM

Native L2

MPLS to

Access/Aggregation

Virtualize

Access/Aggreg

IP/MPLSUnify services (TDM,

Ethernet)

Common MPLS (access,

aggregation, Core)

Remote LFA, Auto IP Ring

MPLS

TDM

MPLS

Residential, Biz, Mobile, Cloud

MPLS

nV

Operational Simplicity Model

Remove majority of protocols

on access/aggr devices

nV

Residential, Biz, Mobile, Cloud

L2

BRKSPG-2202 30


nV Edge Technical Use Case L2VPN Dual-homing

S S

A A

LACP

Standby

Active

Active PW

Standby PW

Standby

Active

LACP

Solution1: MC-LAG + 2-way PW redundancy

(Considered one of the best solution in the market)

Solution 2: ASR 9000 nV Edge

MC-LAG Operationally

Complex

4 PWs with 3 standby

control plane overhead

PW failover time depends on

the number of PWs

Require additional state sync

(for example, IGMP Snooping

table) to speed up service

convergence complex

Simple, legacy LAG

Single PW

Link/Node failure is protected

by LAG, PW is even not aware

super fast convergence

State sync naturally

Simple and fast convergence

independent of PW scaleBRKSPG-2202 31


nV Edge Technical Case Study –L3 CE Dual-homing

Two Routing

Adjacency

Single Routing

Adjacency

CE dual homing to two PE routers.

2 L3 interface, and run separated IGP/BGP

session with two PE routers

Traffic load balance over the two ECMP paths

When link or node failure, IGP/BGP adjacency

goes down. Protocol re-converge.

No state sync between PE’s

CE dual homing to one virtual nV System. Single

routing adjacency over the link bundle*

Traffic load balance over the link bundle

When link or node failure, bundle remains up, no

upper layer protocol change super fast

convergence, and simple

State sync naturallyBRKSPG-2202 32


What is the nV Satellite solution ?• A single logical switch/router built by interconnecting an ASR9K and one or more

smaller satellite switches

N x 10GSatellite 2

ASR 9000

N x 10GSatellite n

N x 10G

Satellite 1

…

One Virtual System

BRKSPG-2202 33


nV Satellite – One Virtual SystemGE Port Extender

Satellites are virtual line cards – enabling one virtual system

Increased Service Velocity

No distance limitation between Host and Satellite

Host: Any ASR9000 Series Chassis

Satellites: ASR9000v

N x 10GSatellite 2

ASR 9000

N x 10GSatellite n

N x 10G

Satellite 1

…

ASR9000 HostASR9000v Satellite

One Virtual System

ASR9000v

BRKSPG-2202 34


Alrm EMS DNS Sec.

MAC L1

STP

MPLS TE

MPLS

IP

e-BGP

i-BGP

IGP

LDP

CPE

Access

…

Agg

MAC L1

STP

MPLS TE

MPLS

IP

e-BGP

i-BGP

IGP

LDP

Edge Edge

MAC L1

STP

MPLS TE

MPLS

IP

e-BGP

i-BGP

IGP

LDP

Agg

MAC L1

STP

MPLS TE

MPLS

IP

e-BGP

i-BGP

IGP

LDP

Complexity Touch-PointsTraditional Network

Addressed by Cisco nV Satellite

BRKSPG-2202 35


nV Satellite

Satellite

nV Satellite

MAC L1

CPE

Access

MAC L1

STP

MPLS TE

MPLS

IP

e-BGP

i-BGP

IGP

LDP

Edge Edge

MAC L1

STP

MPLS TE

MPLS

IP

e-BGP

i-BGP

IGP

LDP

MAC L1

Complexity Touch-PointsWith Cisco nV Satellite

Satellite

Result:

Control Plane

Reduction

and Operational

Simplification

BRKSPG-2202 36


Satellite OperationEnd User Perspective

All Satellite Configuration is done on the Host

Satellite is a remote line card: Access ports have feature parity with ASR9K local ports

One ASR 9000 nV System

ASR9000 HostSatellite

ID 101

Interface and

Sub-interface

CLI Example

interface GigabitEthernet 101/0/0/1

ipv4 address 1.1.1.1 255.255.255.0

interface GigabitE 101/0/0/2.100 l2transport


rewrite ingress tag push dot1q 2

nV follows the same XR naming

convention as local interfaces

sat-ID/sat-slot/sat-bay/sat-port

Satellite Access Port Satellite Fabric

Link (ICL*)

“nv” port

BRKSPG-2202 37

Operational Simplicity: Pseudowire Headend


Pseudo-wire Headend – Offers Flexibility !

Pseudo-wire Headend Architecture benefits:

• Supports Seamless MPLS end-to-end Architecture: Flexible Edge placement

• Simpler resiliency between L3 PE and aggregating network

• Easy-to-operate service High-Availability through MPLS based network convergence

• Eliminates operationally cumbersome VLAN hand-off

• Enables Flexible Edge placement

• Drop S-PE wherever there is a LSP towards Access PE

LDP Core / Internet Core

Access PE (A-PE)

e.g.: DSLAM, OLT,

U-PE

Service PE (S-PE)

e.g: PW-HE-L3-PE

PW-HE-BNGCE

CEL3PE

Internet

Peering

Business L3

VPNs

Aggregation LDP domain

BRKSPG-2202 39


Pseudowire Headend Interface in IOS-XR

interface pw-ether 100

vrf vpn-green

ipv4 address 10.1.1.2/24

service-policy input pw_in

service-policy output pw_out

ipv4 access-group p-in- in

ipv4 access-group p-out out

l2vpn

xconnect group pwhe

p2p pwhe-foo

interface pw-ether 100

neighbor 100.100.100.100 pw-id 1

Pseudowire foo (Ethernet)

InterfaceS-PE

Pseudowire bar (Ethernet)

PW-HE

Interface

PW-HE

Interface

• A PW-HE interface is a virtual interface created to represent traffic from/to a given PW while terminting that traffic in a VRF

• PW-HE is a L3 interface on which we can configure features such as Routing, QoS, ACL, etc:

• PW-HE support over MPLS label switched physical interfaces for T-LDP signaled PWs only

BRKSPG-2202 40

Services Monitoring






• Conclusion


Service Monitoring via Ethernet OAM

• L2 Virtual Circuits have the same common network infrastructure.

• How do you monitor these individual Virtual circuits?

• Traditional Network Monitoring tools Monitor Network and Physical Layer – Not Service Layer

• Need service layer visibility – EOAM Provides that !

• E-OAM provides monitoring as well as Service Activation testing

BRKSPG-2202 42


MEF Services: Activation and Monitoring

Pre-AggCore AGGAGG

vRR1 vRR2

Access Access

Serv

ice

Activa

tio

nM

on

ito

rin

g

Y.1564 MeasurementsDelay, Jitter, Throughput, Loss

E-OAM , Y.1731 (1DM, 2DM, SLM)TWAMP MEPMEP MIP MIP MIP MIP

E-LANVPLS, PBB-EVPN (includes E-TREE), EVPN

E-Line

PAN-SE

BRKSPG-2202 43

Services Orchastration






• Conclusion


Orchestrating Carrier Ethernet Services

Infrastructure

SERVICES

SR

L3 VPN

MP-BGP

Orchestration

Provisioning

SR SR SR SR

L3 VPN

EVPN

Segment Routing

Service Provisioning

• Netconf and Yang

Service Protocols

• EVPN

• PBB-EVPN

• Static PW

Transport

• Segment Routing

• TI-LFA

BRKSPG-2202 45


Services Orchestration

• YANG based Service Provisioning

• No need to provision services through CLI

• Provides Programmability, flexibility and faster turn up.

• Abstracts vendor specific CLI through NEDs

Pre-AggCore AGGAGG

vRR1 vRR2

Access Access

Network Services Orchestrator

BRKSPG-2202 46


Services Orchestration and Monitoring

EPN Manager

• Service Provisioning

• E-Line (w/o EVPN)

• E-LAN (w/o EVPN)

• E-Access and E-Transit

• L3VPN

• End to End Network Management

• Image and Inventory Management

Pre-AggCore AGGAGG

vRR1 vRR2

Access Access

BRKSPG-2202 47

In Conclusion


Carrier Ethernet Services in an EPN EnvironmentMPLS, Ethernet and/or nV Access Network

E-Line

Ethernet Port, 802.1q or 802.1ad

E-LAN VPLS, PBB-EVPN (includes E-TREE), EVPNEthernet Port, 802.1q or 802.1ad

AGN-SE

E-LAN VPLS, PBB-EVPN (includes E-TREE), EVPN

Ethernet Port, 802.1qEthernet 1q/ 802.1ad PWHEWith Spoke Pseudowire Multiplexing per Access Node or per Access Port

E-Line

Ethernet Port, 802.1q

PAN-SE

Pre-AggCore AGGAGG

iBGPvRR1 vRR2

Access Access

BRKSPG-2202 49


Summary

• Cisco EPN and Carrier Ethernet Architecture provides comprehensive architectural guidelines

• Cisco ASR-9000 – A versatile platform Quick Recap

• Carrier Ethernet Service Configuration Toolset provides tools for Carrier Ethernet Service configuration, monitoring and deployment

• Service Monitoring through E-OAM

• Services Orchestration using NSO provides NETCONF/YANG based service deployment

BRKSPG-2202 50


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BRKSPG-2202 52

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deploying carrier ethernet services on cisco...

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