In chapter 11 cases, notice of a deadline for proofs of claim must be given in the following manner:

(a)     Party Request.  A party requesting the court to set a date within which claims must be filed must provide notice of the bar date and a form of proof of claim to all creditors.

(b)     Sua Sponte.  If the court sua sponte sets a date within which claims must be filed, the clerk must provide notice of the bar date and a form of proof of claim to all creditors.