QSF+ and QSF cables

[kevin wilson]

Is there a difference in physical form between QSFP+ connectors and QSFP connector ? Will a QSFP+ cable be able to be connected to a QSFP port, and will a QSFP cable be able to be connected to a QSFP+ port ?

 

[i386]

No, qsfp and qsfp+ use 38pins QSFP - Wikipedia.

Yes, but the speed will be limited to the speed of the slowest component.

 

[i386]

No, qsfp and qsfp+ use 38pins QSFP - Wikipedia.

Yes, but the speed will be limited to the speed of the slowest component.

 

[Jerry Renwick]

There is a difference between sfp (1Gbqs) and sfp+ (10Gbqs), but no difference between qsfp or qsfp+ (they both refer to the 40G modules).

 

[pc_doom]

Is there a difference in physical form between QSFP+ connectors and QSFP connector ? Will a QSFP+ cable be able to be connected to a QSFP port, and will a QSFP cable be able to be connected to a QSFP+ port ?

QSFP+ evolved as the standard to support 10Gb/s data rates per SFF-8436. QSFP products support quarter small form-factor pluggable with the different data rate comparing with QSFP+, so there is no change in the product solution. Since QSFP+ can provide higher bandwidth, it is likely that it will eventally replace QSFP as this package standard. Gradually, QSFP becomes obsolete.

 

[ceorl yip]

new to qsfp, researching to stack 4 icx 6610 (40gbe ports).
i notice there are 40gbe qsfp(+) and 4x10gbe qsfp(+) (not the breakout), are these one and the same, just labeled differently or same type of cable but different personalities?

 

[fohdeesha]

new to qsfp, researching to stack 4 icx 6610 (40gbe ports).
i notice there are 40gbe qsfp(+) and 4x10gbe qsfp(+) (not the breakout), are these one and the same, just labeled differently or same type of cable but different personalities?
View attachment 12351

same cable type. The best deal I've found for brocade qsfp+ for stacking is: NEW Brocade 58-0000033-01 4x10GE QSFP Passive Cable 1M 100033290123 | eBay

 

[BeTeP]

I am just buying old new stock Netapp SAS cables for like $5 a piece - they work just fine with Mellanox switch and adapters at 40Gbps.

Transceiver Information
Identifier :
QSFP

Cable/ Module type :
Unknown

Ethernet speed and type :
Not supported

Vendor :
Molex Inc.

Cable length :
-

Part number :
112-00177

Revision :
A0

Serial number :
xxxxxxxxxxx

 

[Rdel70]

I can confirm these Netapp 112-00177 cables work fine in DAC mode between two HP 544 FLR Nics (Mellanox ConnectX-3 Pro) installed in HP Proliants G9 and G10 servers

Nics forced in Ethernet mode via ,
mlxconfig -d mt4103_pci_cr0 set LINK_TYPE_P1=2
mlxconfig -d mt4103_pci_cr0 set LINK_TYPE_P2=2
mlxconfig -d mt4103_pci_cr0 set PHY_TYPE_P1=2
mlxconfig -d mt4103_pci_cr0 set PHY_TYPE_P2=2

and sync at 40 Gbps in Windows without any particular tweaking