VIAVI TestCenter: B2-800G information.

VIAVI TestCenter: B2-800G information.

What is the Min/Max MTU size supported at 100% line rate? 64 bytes to 16K bytes Is it possible to send CRC errors and control rate? Does it suppoprts PCS error injection? No Error injection is supported so far. Is FEC Error Injection supported? Yes, starting at STC version 5.43. Is it possible to insert fault in laser for local and remote fault insertion? VIAVI supports module memory control, you can use “OutputDisableTx” if supported by the module to disable the laser output to create local link fault only. Is it possible to get back to back test results (output from VIAVI goes to input of VIAVI) for qualified cables like BER results? BER or SER are displayed in TestCenter IQ Is it possible to read individual PCS Block stats for 800G port, which has 2x400g PCS blocks? Yes, it is possible. Is it possible to set loop timing on VIAVI 800G port?  This will cause VIAVI to use recovered clock as the source of its Tx reference clock and will allow true 100% performance with no packet loss. We don’t support external clocking. Any visibility into the pre-FEC errors on the 800G link? Yes, via TestCenter IQ If it is the lowest-level -KP4 FEC, the pre-error counts would not be zero   What FEC is used in 1x800G, and what is the FEC if it is channelized to 8x100G or 2x400G? STC supports RS(544,514) common to all of the modes which 106.25GEL.  This means that RS-FEC is supported on 1x800G, 2x400G, and 8x100G modes.