
PPP Concepts
117360-A Rev. A 2-19
Media supported • Synchronous
• T1/E1
• MCE1/MCT1
• HSSI
• Synchronous
• T1/E1
• MCE1/MCT1
• ISDN B-channel drivers
• Raise-DTR/V.25bis modems
Packet
resequencing
Depends on the path selection:
• With address-based selection
(the default), packets always
arrive in sequence.
• With random path selection,
packets traveling on different
paths can arrive at their
destination out of sequence.
Multilink maintains the sequence
of packets sent over different lines
of the link.
Support for
bandwidth-on-
demand
No Yes
Miscellaneous • Address-based selection does
not always result in even
traffic distribution across all
data paths.
• Random selection provides for
even traffic distribution.
• All lines in a circuit must
negotiate and perform multilink.
• You cannot use nonmultilink
lines in a circuit with multilink
lines.
• All data packets sent over a
PPP multilink circuit travel as
multilink packets.
Table 2-4. Comparing Multiline and Multilink
(continued)
Feature Multiline Multilink
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