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제목 벤더별 QSFP+ transceiver 차이점 비교
작성자 엑사통신 (ip:)
  • 평점 0점  
  • 작성일 2018-05-27 14:54:08
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벤더별 QSFP+ transceiver 차이점 비교표


For QSFP+ formfactor there are different variants.
(without Active-Optical-Cables and Direct-Attached-Cables)

 

The main difference between SR4 and LR4 is the connector type. QSFP+ do have an integrated CWDM Mux/Demux which multiplexes all 4 lanes to only one fiber. This gives the ability to use a LC-Duplex connector with a standard Multimode- or Singlemode-Fiber.

QSFP+ with MTP/MPO connector are more price sensitive. There is just a cabling with MTP/MPO cables needed.

Description/
Connector

Distance

Wavelength

Connector

Details

Interoperability

Provider

QSFP+
SR4

100m (OM3)
150m (OM4)

4 x 850nm

MTP/MPO

IEEE 802.3ba
(40GBASE-SR4)

QSFP+ extended SR4

SFP+ SR

Cisco
QSFP-40G-SR4
Juniper
QFX-QSFP-40GE-SR4
Arista 40GBASE-SR4
Brocade
40G-QSFP-SR4*

QSFP+
eSR4

300m (OM3)

400m (OM4)

4 x 850nm

MTP/MPO

optimized VCSEL with better performance of RMS spectral width compared with QSFP+ SR4

QSFP+ SR4

SFP+ SR

Juniper QFX-QSFP-40GE-ESR4
*Arista 40GBASE-XSR4

QSFP+ MMR4

100m (OM3)

120m (OM4)

1270nm,
1290nm,
1310nm,
1330nm

LC

Multimode optimized

4-Kanal CWDM Mux/Demux inside

Juniper
JNP-QSFP-40G-LX4

QSFP+ BIDI SR

100m (OM3)

120m (OM4)

1 x 850nm

1 x 900nm

LC

BIDI for Multimode is hot!

20G per lambda!

only available from Cisco at the moment

Cisco
QSFP-40G-SR-BD

QSFP+ IR4

1km (G.652)

1270nm,
1290nm,
1310nm,
1330nm

LC

4-Channel CWDM Mux/Demux inside

SFP+ CWDM

Arista 40GBASE-LRL4
Juniper
JNP-QSFP-40GE-IR4

QSFP+ LR4

10km (G.652)

1270nm,
1290nm,
1310nm,
1330nm

LC

IEEE 802.3ba (40GBASE-LR4)

4-Channel CWDM Mux/Demux inside

SFP+ CWDM

Juniper
JNP-QSFP-40G-LR4
Cisco QSFP-40G-LR
Arista 40GBASE-LR4
Brocade
40G-QSFP-LR4

QSFP+ LR4

10km (G.652)

1270nm,
1290nm,
1310nm,
1330nm

LC

IEEE 802.3ba (40GBASE-LR4)

4-Channel CWDM Mux/Demux inside

SFP+ CWDM

Q.1640G.20

QSFP+ ER4

30km (G.652)

1270nm,
1290nm,
1310nm,
1330nm

LC

IEEE 802.3ba (40GBASE-ER4)

SFP+ CWDM

Q.1640G.40

QSFP+
PIR4

1km (G.652)

4 x 1310nm

MTP/MPO
APC

4 x 10G operations on SMF

QSFP+ parallel LR4
SFP+ LR

Arista 40GBASE-PLRL4
Juniper JNP-QSFP-4x10GE-IR

QSFP+
PLR4

10km (G.652)

4 x 1310nm

MTP/MPO
APC

4 x 10G operations on SMF

QSFP+ short parallel LR4

SFP+ LR

Arista
40G-PLR4

* Juniper enables for their QFX-QSFP-40GE-ESR4 also 4 x 10G operations - to split up one QSFP+ port in 4 dedicated 10G ports.

The same applies for Brocade. For this kind of operation they defined a special article/partnumber 40G-QSFP-SR4-INT. From a technical point of view this "split operation" is possible with all QSFP+ mentioned above.

QSFP+ get always 4 x 10G from the host on the electrical side. Only the programming of the transceiver needs to be adapted for the host. On the optical path you have to check how to split up the signal in 4 dedicated 10G lines. For the ones with MTP/MPO receptacle this is not a problem with  Breakout-cables.


*기술문의 엑사통신 기술팀

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