Qsfp 40g csr4 can be used for native 40g optical links over parallel cables with mpo mtp connectors or in a 4 10g mode with parallel to duplex fiber breakout cables for connectivity to four 10gbase sr interfaces.
Qsfp 40g sr4 cable.
As shown in figure 11 each transceiver transmits over four fibers and also receives transmissions over four fibers.
The cisco 40gbase csr modules support link lengths of 300 meters and 400 meters respectively on laser optimized om3 and om4 multimode fibers.
In the 40gbase sr transmission there are eight fibers associated with the channel four fibers for the tx signal and four fibers for the rx signal.
As previously mentioned in 2010 ieee 802 3ba approved the 40gbase sr4 physical medium dependent pmd multimode parallel optic solution which uses eight fibers to transmit four duplex channels each at 10 gigabit ethernet.
Digital optical monitoring dom support is also present to allow access to real time operating parameters.
The qsfp40gsr4es is a dell emc qsfp 40g sr4 compatible fiber transceiver module that has been designed programmed and tested to work with dell emc brand switches and routers.
Limited by the property of copper cable qsfp 40g cr4 can only reach a transmission distance of 7 meters.
Qsfp 40g cr4 module is very much different from the above mentioned two 40g modules.
Product description this cisco qsfp 40g sr4 compatible qsfp transceiver provides 40gbase sr throughput up to 150m over multi mode fiber mmf at a wavelength of 850nm using a mpo connector.
The qsfp40gsr4st is a cisco qsfp 40g sr4 compatible fiber transceiver module that has been designed programmed and tested to work with cisco brand switches and routers.
The qsfp 40g csr s is a pluggable optical transceiver with a duplex lc connector interface used for connectivity using multimode fiber mmf.
The cisco qsfp 40g csr4 is optimized to guarantee interoperability over the complete specification range of 10gbase sr.
It is known as 40g qsfp cable or 40g qsfp direct attach cable.
It is a pre terminated copper cable with both ends terminated with qsfp connector.
It delivers dependable 40 gbe connectivity over fiber cable for 40gbase sr4 compliant networks with a maximum distance of up to 150 m 492 ft.
It delivers dependable 40 gbe connectivity over fiber cable for 40gbase sr4 compliant networks with a maximum distance of up to 150 m 492 ft.
As we all know the standard specifies mpo as a connector to the 40gbase sr4 csr4 qsfp transceiver.