This field is the single highest per-interval delta value captured in this archived historical record for FCoE payload bytes transmitted out this same converged Ethernet uplink toward the fabric — the worst burst seen across the retained collection history. This is the number to check after an alert fires, since it shows the worst single interval for bytesTx on this interface even if the current live value has already settled back down. For example, a max of 1,987,364 bytes would capture a burst interval, such as a large backup job briefly saturating this FCoE path.