If I connect two SN5600 switches for ICL or MLAG over an 800G port using an 800G DAC or ACC cable, do I need to break out the port as 2×400G (e.g., swpxs0 and swpxs1) for the link to work, or can it operate as a single 1×800G port (swpx) as supported by the switch?
The reason I ask is that both the DAC (MCP4Y10) and the ACC (MCA4J80) show in their specifications as twin-port OSFP / 2×400 Gb/s data rate. This makes me think the port might need to be broken out into 2×400G to use the cable properly.
Also, when using optical transceivers such as MMA4Z00-NS or MMS4X00-NM, I understand the port does need to be broken out into 2×400G, since those transceivers physically connect via two ports/two fibers within a single module.
Could someone please confirm if this understanding is correct?
Hi all, we are in deployment stage and have chance to test both 800G DAC (MCP4Y10) and optical transceivers MMA4Z00-NS in our project. Just to give you all update on this topic for contribution, if anyone interest in it.
We can confirm both DAC and transceiver they can work either as one single 800G mode or 2X400G mode. This has been tested between SN5600 pairs.
In our deployment, we use 2X400G mode for the 800G DAC even though it can work as single 800G mode, the reason is if we have one separate cable media break internally for any reason, we will still have another 400G work between the two switch ports. If set the cable as single 800G mode, an internal separate link down will bring down the whole 800G connection.
Hope this can help someone in future if have same confusion on this topic.