jeff_chong
1 Copper

QSFP+ MTP Breakout Cable to 4 x SFP+ LC compatibility for connecting MXL 10/40 Blade Switch and Cisco Catalyst 4507R+E

Hi,

My customer have several Dell M1000e Blade system with MXL 10/40 Blade switch. They also have a Cisco switch Catalyst 4507R+E (with Module: WS-X4712-SFP+E).

They want to access an iSCSI Compellent storage from the Blade systems by connecting both the MXL blade switch and compellent storage to the Cisco switch using 10Gb SFP+ connection.

By using a Dell QSFP+ MTP breakout cable to 4 x SFP+ LC, where the QSFP+ cable end is connected with the MXL switch and the 4 x SFP+ cable end connected to the Cisco switch. However, they have concerns if such connection is supported for iSCSI and if the breakout cable is compatible with the Cisco switches.

Since the cable is from Dell, i don't see a problem connecting the QSFP+ end to the MXL switch as it come with a QSFP+ transceiver already.

But for the 4 x SFP+ LC breakout end, as I understand it does not come with transceivers and will required to plug into a Cisco brand SFP+ transceiver which in turn plug in to the Cisco switch. 

As such, they are not convinced the breakout cable is supported. They would like to know if we have any breakout cable compatibility guide that stated the breakout cable can work with the Cisco  Catalyst 4507R+E switch?

Thanks.

Regards,

Jeff 

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Moderator
Moderator

RE: QSFP+ MTP Breakout Cable to 4 x SFP+ LC compatibility for connecting MXL 10/40 Blade Switch and Cisco Catalyst 4507R+E

The ends of the 4 breakout leads do not require any transceiver and plug directly in the SFP+ port. The lengths offered for this cable are .5m, 1m, 3m, 5m, and 7m. Here is an example of one of the cables on our site.

http://dell.to/1JTA7MD

The config guide has some further information on how to split the port. That information starts on page 415:

http://dell.to/1P0pOFk

Some key points to take away from the config guide.

-You cannot use split ports as stack-link to stack an MXL Switch.

-Split ports cannot be a part of any stacked system.

-The quad port must be in a default configuration before it can be split into 4x10G ports.

-The 40G port is lost in the configuration when the port is split; be sure the port is also removed from

other L2/L3 feature configurations.

-The system must be reloaded after issuing the CLI for the change to take effect

I am not aware of any documentation that has a list of hardware that the breakout cable will work with. Theoretically it will work with any device that has a SFP+ interface. Here is a white paper that details deploying the MXL unit in a Nexus environment. Not exactly the same, but it may prove useful.

http://dell.to/1UCXtqa

Hope you find this info helpful.

Cheers

Daniel Covey
Dell EMC| Enterprise Support Services
Get support on Twitter:@DellCaresPRO
Download our QRL app:iOS, Android, Windows
Dell Networking Resources

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Moderator
Moderator

RE: QSFP+ MTP Breakout Cable to 4 x SFP+ LC compatibility for connecting MXL 10/40 Blade Switch and Cisco Catalyst 4507R+E

If the Cisco already has transceivers, this looks to be another route you could take.

http://dell.to/1WXk1Ub

Daniel Covey
Dell EMC| Enterprise Support Services
Get support on Twitter:@DellCaresPRO
Download our QRL app:iOS, Android, Windows
Dell Networking Resources

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