John Gill Commentary Numbers 21:12

"From thence they journeyed, and encamped in the valley of Zered." — Numbers 21:12 (ASV)

From there they removed, and pitched in the valley of Zered .
] Or the brook Zered, as in (Deuteronomy 13:14) that is near it: this seems to be the same station with Dibongad, (Numbers 33:45) , and which, according to the above writer, was sixteen miles from Ijeabarim.