
9.3 Signaling Protocols 397
Distribution Protocol (TDP). Aggregate Route-Based IP Switching (ARIS), supported
by IBM, was a control-based switching technology like TDP; although it was
also general in its applicability, it was most keenly focused on ATM hardware.
All four of the switching technologies listed in the preceding paragraph are
described in the past tense. Each had its strengths and weaknesses, but, apart
from legacy equipment, they have been deprecated by MPLS, which was
developed by the Internet community by taking the best features from all of the
previous work and adding to them as ...