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+Network Working Group                                      Steve Crocker
+Request for Comments: 25                                            UCLA
+                                                         30 October 1969
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+                           NO HIGH LINK NUMBERS
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+Because it may be desirable to reserve one or more link numbers for
+instrumentation purposes, and because 256 link numbers are many more
+than are needed, we suggest that no link number over 63 be used.  At
+UCLA, we will implement our tables to take advantage of this limitation.
+We also note that 32 may be even more realistic, but 64 is certainly
+sufficient.