PLNOG 17 - Alexis Dacquay - 100 G, Skalowalność i Widoczność

Alexis
Dacquay – Systems
Engineer
– ad@arista.com
100G
– Scale
– Visibility

Thank
you
100G
– Scale
– Visibility
Network
vs
Compute
&
Storage
Development

Confidential. Copyright © Arista 2016. All rights reserved.
Legacy ASIC vs Merchant Silicon
• Built for a singular
purpose
• Built for a specific
product
• Designed as
software, translated
into hardware
• Built for flexible
deployment
• Economies of Scale
• Designed as
hardware, no
translation
an
ASIC Merchant
Si
© Apple

Advantages of the Merchant Silicon
Allow the use of latest fabrication technology from Intel,
Broadcom, or others
• faster
• denser
• bigger tables
• cooler
Still leads ahead of ASIC based on newer 18nm (vs 26nm)

Merchant Silicon Innovations - 2016
Previous
Generation
Previous
Generation
Current
Generation
Next
Generation
Transistor Density
Increased
SerDes Speed
6.4Tbps
Increased
Table Scale
Significantly
Increased
Table ScaleIncreased SerDes
Density
1.28Tbps
You
Are
Here

Evolution
of 100GE
Densities
48x10GE - 2x100GE
96 x 100GE, 3W per 10G port
7280SE
64 x QSFP 40GE in 2RU
7250X
7500E
48 x QSFP 100GE & 4 x 40G
12 x QSFP 100GE & 24 x 40G
7280R – 1RU
7280R - 2RU
36 x QSFP 100GE per LC
432 x 100G per chassis
7500R
2015 Today

Evolution
of 100GE
Densities
48x10GE - 2x100GE
7280SE
7250X
7500E
48 x QSFP 100GE & 4 x 40G
12 x QSFP 100GE & 24 x 40G
7280R – 1RU
7280R - 2RU
7500R
2015 Today
P Full Internet table

Evolution
of 100GE
Densities
48x10GE - 2x100GE
7280SE
7250X
7500E
48 x QSFP 100GE & 4 x 40G
12 x QSFP 100GE & 24 x 40G
7280R – 1RU
7280R - 2RU
7500R
2015 Today
P < $3000 per 100G port

Are All Merchant Si Products Equal?
Door
One
Door
Two
Door
Three
Stickman ©Bowen Barrs

Bringing Merchant Si to the WAN Edge
Time à
Capabilityà
Merchant Silicon
capabilities
Routing Feature
Complexity
Universal Cloud
Network
DCI
Transit
Public
Peering
Internet Inter-DC WAN
WAN
Edge
Spine
Leaf
WAN Edge (CE) routers represent the
highest CapEx investment in infrastructure
today.
Challenges:
• Many niche features
• Full internet routing table in hardware

Merchant Silicon with Modern Operating System
7500R with Arista EOS
NetDb + FlexRoute:
All prefixes programmed in
hardware in under 32 seconds
Current Traditional ASIC router
2 minutes 24 seconds to
to program all prefixes
4.5X Faster Convergence than
existing/established router platforms
Existing
Router platform
and Router OS
100% of prefixes forwarded
100% of prefixes forwarded
~575K IPv4 + ~35K IPv6 prefixes – Internet table March 2016 via 4 upstream transit providers, ~2.4M paths

Service Provider 100G Deployments
Broadband Edge Aggregation Regional Content Peering
Cloud / Storage / BigData 100G Tap Aggregation / NPB

96 x 100G DCI : DWDM + Encryption on Switch LC
+
+
Switch
Encryption
DWDM
9.6Tbps
Up to 3,000 km
256 bit MACsec
Optical
MUX
Up to 96 λs
Optical
DMUX

100G
– Scale
– Visibility
Where
Else
Could
we
Deploy
Merchant
Si?

Merchant Silicon in the WAN/Edge – Why?

Telemetry
100G
– Scale
– Visibility

Why is Network Telemetry Critical?
Photo (Shelley): Audi

Industry Approach to Telemetry
https://upload.wikimedia.org/wikipedia/commons/4/49/Foggy_Golden_Gate.jpg
Syslog
SNMP
NMS GUI

Arista Approach to Telemetry
Local, Accessible Database of device
critical state changes.
Expose More as Standard, Expose all as Required
Historical
State Database
Proactive Performance and Metric
Notifications
Triggered Alerts
State Streaming
Automated Workload Deployment
Workload Location Identification
Workload
Visibility

Polling is inefficient
Time
Poll Poll
ACME Network Health Monitor
The current network status is
Congestion

States
Streaming
States Streaming

Network Wide Telemetry Use Cases
Instantaneous updates at
new levels of granularity
Recall historic network
state for off-network
analytics
Real-time data for predictive
security approaches.
Anomaly detection
SP SDN, ISP, Broadcast,
Media and Entertainment IP
Storage
What is possible with a modern approach?
Forensic
Troubleshooting
Security
Industry
Specific
Real-time
Monitoring

100G
– Scale
– Visibility
Telemetry
in
Action

Thank
you
100G
– Scale
– Visibility

Metro Use Case (<80km)
High Density & Cost Effective 100G Metro Link withWire Speed Encryption
Optical
MUX
~80km SMF
Optical
DMUX
Encrypted 100G Ethernet Traffic
Up to 9.6Tbps bandwidth
No amplification needed
Multiple λs

Metro Regional Use Case (80km – 500km)
Optical
MUX
~100km SMF spans
Optical
DMUX
Standard In-line Amplifiers
Multiple λs
EDFA EDFA

Long Haul Use Case (Up to 3000km)
Standard ROADMs with Colored or
Colorless DeMUX
Multiple λs
Optical
MUX
EDFA Optical
DMUX
EDFA
EDFA
ROADM

PLNOG 17 - Alexis Dacquay - 100 G, Skalowalność i Widoczność

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PLNOG 17 - Alexis Dacquay - 100 G, Skalowalność i Widoczność