QSFP+ LR4 Parallel Single Mode transceiver

[Carlos_Maldona2]

Installing a QSFP+ LR4 Parallel Single Mode transceiver. I had set one of the fg.1.1 to 10GB creating 4 tg ports. In order to use these transceiver, do I set the port back to 40GB?

[Erik_Auerswald]

Hi,

as I understand it, this QSFP+ can be used both in split mode to connect 4 devices at 10G, and in 40G mode to connect to another 40G port.

See http://documentation.extremenetworks.com/pluggable/PluggableHardware/QSFP/r_lr4-psm-qsfp-module.shtm...

Thus it depends on the use case if the 40G port should be configured as 40G or 4x10G, not on the transceiver.

Br,
Erik

[Straw__Glyn]

published the following article to cover this in the kb in case it comes up again

https://gtacknowledge.extremenetworks.com/articles/Q_A/40Gb-QSFP-Parallel-Single-Mode-PSM-MPO-connec...

[Straw__Glyn]

excellent , good luck

[Carlos_Maldona2]

Thanks Glyn, I'm running 4.2 so that's good.