1 | © 2015 Infinera
Open SDN in Metro P-OTS NetworksSten NordellCTOMetro Business Group2015-10-15
2 | © 2015 Infinera
Infinite Pool of Intelligent Bandwidth
The New Network for a Software-driven World
Old Model
API – SDN Control
New Simplified Model
ServicesNetwork Functions Virtualized into Cloud
Transport FunctionsScale, Convergence, Software-Controlled
Intelligent Transport
FirewallSBC
B-RASMPLS PE
L2/3 Packet
Layer 1 OTN
Layer 0 WDM
LayeredNetwork
Dynamic Intelligent BW
Network Efficiency
Intelligent Automation
App-Driven Performance
3 | © 2015 Infinera
The evolution of Native Packet Optical in the Metro
Native Packet Optical 1.0
Layer 1
Layer 2
Native Packet Optical 2.0
OTNEthernet
MPLS-TP CE2.0
Native Packet Optical 3.0
4 | © 2015 Infinera
Metro P-OTS SDN 2.0 key characteristics
Open SDN architecture• Open Source Software• Open platform with added value• Feature velocity driven• OpenFlow based
Open APIs providing interoperability between transport layers
Built for Metro P-OTS networks• Each switch instance controlled individually • Node level for infrastructure
Scalable and distributed SDN controller architecture
SDN
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What applications are we focusing on?
Service oriented transport SDN apps
• Bandwidth• On demand• Flexible • Calendaring• Instant
Service chaining
Multi-layer coordination
L0 to L3 applications and services
Open APIs for network programmability
Bandwidth on demand
Service chaining
Multi-layer coordination
6 | © 2015 Infinera
Metro P-OTS SDN 2.0 Overview
OpenFlow 1.3 (+Extensions)
REST APIs
MEFConnectivity
Host DiscoverySimple
DHCP Server Policers
vRouter BandwidthCalendaring
NetworkTap Statistics
Controller
TNM SDN Web app
EMXPEMXP
EMXP
EMXP EMXP
Har
dwar
eCo
ntro
l Lay
erU
I
7 | © 2015 Infinera
Application examples
8 | © 2015 Infinera
What: Adjust services’ bandwidth
levels freely and live
Why: Allows the operator to
dynamically adjust bandwidth based on customers requests
Flexible bandwidth
E-LINECE A CE B
Video Source
Video Display
EMXP
EMXP
EMXP
9 | © 2015 Infinera
What: Define bandwidth limits
based on date and time
Why: Define services providing
more bandwidth when utilization is low (off-hours)
Define services only used at scheduled intervals
Bandwidth Calendaring
Network wideUtilization
Time 00:00 23:0012:0006:00 18:00
0%
100%
50%Threshold
Time 00:00 23:0012:0006:00 18:00
Bandwidth Calendar for Customer X
0%
100%
50%
E-LINECE A CE B
EMXP
EMXP
EMXP
10 | © 2015 Infinera
What: Possibility to optimize the route of
existing services
Why: Provides freed-up resources and
improved services Avoid sub-optimal routing as a
result of changed network topology
Optimize services
CE EMXP
EMXP
EMXPEDU
Better path
CE EDU
Existing path
11 | © 2015 Infinera
What: Operator provides a number of
ports for connectivity between sites
Why: Customer can choose to connect
or disconnect network ports Customer get automated service
realization by connecting end-point devices
Instant services scenario
E-LINE
CE B
EMXP
EMXPEMXP
CE A
12 | © 2015 Infinera
What: Enables services definitions to be
bound up with a customer rather than to a physical network location
Why: Improving operational efficiency Services follow the customer –
e.g. when moving its offices increases customer satisfaction
EDU / Host mobility
CE EMXP
EMXP
EMXPEDU CE EDU
CE
EDU
13 | © 2015 Infinera
What: Basic level of protection provided
without additional configuration of rings or linear protection
Why: Automated service restoration in
case of faults/fiber break
Automatic Restoration
CE EMXP
EMXP
EMXPEDU CE EDU
14 | © 2015 Infinera
What: Tell network to re-route services
away from a network element using a ”make-before-break” approach
Why Allows operator to remove traffic
from a given element using a hitless approach• Reduces network impact of a
planned upgrade or replacement
Redirect / Reroute services
CE EMXP
EMXP
EMXPEDU
Alternative path
CE EDU
Upgrade target
15 | © 2015 Infinera
VirtualizationSDN based vRouter in Metro P-OTS
16 | © 2015 Infinera
Goal
Physical topology
Router topology
vRouter
IP Traffic IP Traffic
EMXP
EMXP
EMXP
17 | © 2015 Infinera
vRouter – How
OSPF PDUsOSPF PDUs
RoutingTable
ControllerForwarding Entries
Picks up control plane traffic:• From each router neighbor• For example OSPF packets
Passes the control packet to routing engine:• And sends back packets to edges
Routing engine computes routing table• Which is turned into forwarding
rules
vRouter
OSPF ISIS
Data flowEMXP
EMXP
EMXP
18 | © 2015 Infinera
EMXP
vRouter – Why – Mobile backhaul
Link for protection
Without vRouter:• All traffic goes to the core router• Traffic between edge routers• Even traffic that could go between ports
in the switch
With vRouter:• Enables effective routing between routers• Traffic is no longer routed via core router
• Limited configuration needed for the vRouter.• IS-IS would require no configuration• Any change in router configuration
reflected in vRouter
EMXP
EMXP
19 | © 2015 Infinera
vRouter – Why – Smart aggregation Without vRouter:
• Each client interface adds a port specific vlan• Router has one vlan interface per client interface on
port aggregation device• All traffic goes to router
• Even traffic that could go between ports in switch• Event traffic that could go between aggregation
switches
With vRouter:• One vRouter is created over the aggregation switches
in the network• All metro flows are handled efficiently• Port to port flows• Flows between aggregation switches
• Same operational model for vRouter as in routers• L2 service can still be provided in parallel
CECE CE
12
3
VLANFlows
CECE CE
EMXP
20 | © 2015 Infinera
vRouter for Metro P-OTS SDN 2.0 on existing EMXPs
Supported on existing EMXP family and PT-Fabric
Core network agnostic
Packet over OTU
MPLS-TP over Ethernet
Native Ethernet
L3 Services Internet L3VPN IPTV
Mobile services 3G LTE
IP Router
Mobile SGW
ROADM
λ
OTN(switching grooming)
MPLS(LSRs LERs)
EMXP
Ethernet(SVLAN, ERPS, …)
WDM foundation - Flexible Optical Networks
EMXP
L2 services E-Line E-LAN E-Tree E-Access
L3 services VPN Provider Edge Service chaining
PT-Fabric
PT-Fabric
21 | © 2015 Infinera
Summary Open SDN in Metro P-OTS Networks
Open SDN architecture• OpenFlow based Native Packet Optical • Open APIs for network programmability
Applications oriented for metro transport services• Bandwidth on demand• Service chaining• Multi-layer coordination• Supporting Layer 0 to Layer 3 services
22 | © 2015 Infinera
Thank you
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