G
OSFP/QSFP-DD/CFP8)
Shishio Tsuchiya
shtsuchi@arista.com

Public. Copyright © Arista 2018. All rights reserved.

Agenda• 400Gbps  •  Public. Copyright © Arista 2018. All rights reserved.

 3  

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   Source: Brad Booth and Tom Issenhuth Microsoft, IEEE 802.3bs 400G

4Public. Copyright © Arista 2018. All rights reserved.

100G-DCO

400G-ZR

100G-LR4400G-LR4100G-CWDM4100G-PSM4400G-FR4400G-DR4100G-AOC

400G-AOC

100G-CR44x25G-CR400G-CR88x50G-CR

   &  &4;B93?1A56</<7.04

2=B8$#+•  4;B9!)'56<$2=B8$#+%)* "(+• >B-&   %,:68@B0%
5

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<?A:8> %$")#
2015

2018

Tomahawk2

Tomahawk3

*!'!( &(*!'!( &(• • 
6x23

2017

Tomahawk
* &(
* &(x2 ,-62/70;?@9=A94+613, 57.
Public. Copyright © Arista 2018. All rights reserved.

*!'!( &(* &(Lane
Lane

10Gbps

25Gbps50Gbps100Gbps

1X

10G

25G

50G

100G

2X

-

50G

100G

200G

4X

40G

100G

200G

400G

8X

--400G

800G



2011/20122015/20162018/20192020/2021

4

7

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3

2
  

+#)!$'#"*+ !& +#*"&%796 •  04 3&%!*+(%*&!(&,52• 3.3:8937961-/
NRZ waveform for data: 0 1 1 0 1 1 0 0111

PAM-4 waveform for data: 0 1 1 0 1 1 0 0
Amplitude

Amplitude
0000

Time
Eye diagram for NRZ data

81111Public. Copyright © Arista 2018. All rights reserved.

01110100100
Time
Eye diagram for PAM-4 data

0100


 400G

100G 
SwitchASIC: 4 x 25G NRZ

: 4 x 25G NRZ

: 8 x 50G PAM-4

: 8 x 50G PAM-4
OSFP or QSFP-DD

QSFPSwitchASIC

400G-SR8400G-2FR4DACs

:4x 100G PAM-4
OSFP or QSFP-DD
SwitchASIC

8 x 50G->
4 x 100G
Gearbox
400G-DR4400G-FR49Public. Copyright © Arista 2018. All rights reserved.

400GE DC Solution
Intra-rackIntra-DC

DCI

10

Specification

3m - Copper

400G-CR830m - Cable

400G-AOC

100m - pMMF

400G-SR8500m - pSMF

400G-DR4

2km - SMF

400G-FR4

10km - SMF

400G-LR4100km - SMF

400G-ZR

Public. Copyright © Arista 2018. All rights reserved.

X_aUMZ $+2'7<958:
2014

2016

Arad

Jericho&4;=

x5.56
Jeriho2

!04;=

!/.!#04;='7<958:

Public. Copyright © Arista 2018. All rights reserved.

2018

Jericho+04;=• 1:-[aP]aSJ`LSaX]*,)/E
RaD@AHG•  D EIBC?G11

2017
x1.12x4

!/%!
04;="<36>

E

04;=!/.(!#
!!04;='7<958:

E'7<958:O\aQFQT^aPNaWQY_VKQXYPIS  #(0+&*.2014

2016

x2.25
AradJerichoC

2017
x2.66
Jericho+2018

Jeriho2*22/1555%0.$'&.,&.,/0.'3&21(2*(0-(2&.--(&2+4+2715+2&*+-)120$2$'-6%&,

FE1600
"%/1FE3600

!
!
"%/1 "%/1•  #AD B$%0+&MNREWWYL=GF(0+&*.B• <GH9@8TKUVYCJLOSH
A;F
12

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FE9600>?:WWYL

Agenda• 400Gbps  •  Public. Copyright © Arista 2018. All rights reserved.

;HB7<LCKM?NFN /.43
  10! 108MANG9N@>E=AA8H

/J<D<LG:NIG5=AN
6K86M@2  -&,% )-*"# $*##'#(,+ /
14

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"N@WVN;BGW• !&$)0N?WFL<OUWH: !&!&!&• )!!$)0>WDMIK#/-./.+/,4')!&
• *(7 %3265
R>VAWL5
PJ=<CFP

CFP2

CFP4CPAK*QSFP28R>VTWK

40/100G

40/100G

40/100G

40/100G

4x25-28G<OSCWEQV

Ethernet
SONET/SDH
OTN

Ethernet
SONET/SDH
OTN

Ethernet
SONET/SDH
OTN

Ethernet
SONET/SDH
OTN

Infiniband
Ethernet

D>F1582x145x1441x104x14

22x92x1034.8x101.2x11.6

18x52x8.5

8-32W

3-18W

1.5-6W

4.5-7.5W*

3.5W

201020132015

2013

2015

Public. Copyright © Arista 2018. All rights reserved.

198PJ=<

Source:http://www.fiber-optic-transceivermodule.com/overview-of-100g-client-sidetransceivers.html*Cisco Proprietary form factor
http://www.cisco.com/c/en/us/products/collateral/int
erfaces-modules/transceivermodules/data_sheet_c78-728110.pdf

+.2(LPFU`ce\• )./2]X_cZeT J-:89CE:A7TN- 9CC@B%>7EBA??=5:B5?5?=@A7BBA7<73B75?>C7>C'3AC:5<7,6&!" "$• YV[KTIGJNR- 9CC@B%4<?8B5:B5?5?=B@5:B5?5@3;E:>B47BC8?@C:53<@A?6D5C• 12*0#HaVdNMSQK YV[bVdWe^KO

16

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H=LBONL@CHO

$%&$ #&$

DAG 8!8'888888"&

/662777+-2 05)14.

/66277735-2 ,,+10

/66215-205)14.

(9=JLBOMNF

8$
'*25

 8 %&$ '*25

 8 #&$'*25• ('*25<;LBONL@CHO>#&$:%&$ KOIENC?
17Public. Copyright © Arista 2018. All rights reserved.

". "1;965

""*$&()21*$&()21

*58:74*''%!0/#0 ,+3-18



Public. Copyright © Arista 2018. All rights reserved.

7060X4  4(-!5' • 32 x 400G OSFP
- 128 x 100G (,132"/+$'%5.2

- 128 x 100G ,132"/+$'%5.2

- 32 x 100G (OSFP-QSFP )/(- 32 x 100G (QSFP28"/+$'

- QSFP28"/+$'&4,*.2- QSFP28"/+$'&4,*.2

19• 32 x 400G QSFP-DD

4(5-!5'

Public. Copyright © Arista 2018. All rights reserved.

5#+$*05

JDL• ) 'GOQ&.61$/8:T
• < ) 'GOR$/8:H N$1.9!7<GOR<) 'T • &.61$/8:$/8:I
• ,275.974%193027FE X\V]CHW[^YI G
K• (+#)IZ^YX]U?@SB>R =N$/8:G• 93:;.-I(+#)*+#)""EAPGM
20

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Thank You
www.arista.com
21

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QSFP-OSFP•  (/6,100GE$.+"%*'6-3! (/6,•  $.+"%*!400GE)*+1• 400GE 0#&46)25

22

Public. Copyright © Arista 2018. All rights reserved.

400G  100G QSFP Breakout

4 x QSFP-100G-DR

400G-DR4400G OSFP or QSFP-DD
Systems

Parallel SMF (4 pairs)

4 x QSFP-100G-FR

400G-XDR4400G OSFP or QSFP-DD
Systems

100G QSFP Systems

500m

Parallel SMF (4 pairs)

100G QSFP Systems

2km

400G-2FR4
2 x 100GE 

400G OSFP Systems

duplex SMF

2 x QSFP-100G-CWDM4100G QSFP Systems

duplex SMF
2km
400G-SR82 x 100GE400G OSFP Systems
Public. Copyright © Arista 2018. All rights reserved.

2 x QSFP-100G-SR4
Parallel MMF
100m100G QSFP Systems

400G  100G QSFP Breakout
CAB-O-2Q-400G-xM
Configured in 2 x 100GE mode

400G OSFP or QSFP-DD
Systems

24

Public. Copyright © Arista 2018. All rights reserved.

Copper DAC
3m for OSFP,
2.5m for QSFP-DD

100G QSFP Systems/03142
/03142    &)!$',+- .

25  *)!$',+ &  #++( "%& '& . -  &  #++( "%& '&

Public. Copyright © Arista 2018. All rights reserved.

 *    #)("$'+&,.100G


SwitchASIC: 4 x 25G NRZ100G


: 4 x 25G NRZ
QSFP





SwitchASIC: 4 x 25G NRZ: 1 x 100G PAM4QSFP• %'(*!  +&,.-  
26

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!
• %35 64$6$"< 20$+$9.< 6+(41(69,6&+(4,(5- +6635-3%42$'&20&20342'7&65(6+(41(6&211(&6,8,6;59,6&+,1*564$6$:*5%&0 5(4,(5• %564$6$"=(4,&+2 6+(41(69,6&+(4,(5- +6635-3%42$'&20&20342'7&65(6+(41(6&211(&6,8,6;59,6&+,1*564$6$'1:%&0 28(48,(9• 4,56$

 4$15&(,8(45$1'$%/(5- +6635999$4,56$&20$55(65'$6$3')$6$5+((654,56$

27

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#36,&5#3')