promiscuous mode, DLSw+, 529
propagation delay, 617
protocol-dependent modules, 238
protocol-independent multicast (PIM), 166
protocols, selecting, 58
proxy ARP, 195
Proxy Explorer, 515
PSTN
Internet connectivity, 391
PU type 1.
PU type 4.
PIUs, 443
requirements in full-mesh environment,
DLSw+, 529-530
traffic prioritization, 530-532
echo, effect on voice quality, 619
loss, effect on voice quality, 619
queuing
priority queuing, 304-306
custom queuing, 533
priority queuing, 532
Rapid Transport Protocol (RTP), 492
rate limiting, CAR, 305
reachability, convergence, 300
recurring costs, 13
redundancy
DLSw+, backup strategies, 522
Frame Relay, dial-on-demand backup, 364-365
hierarchical mesh, 363-364
implementing, 16
media implementations, 15
SNA, 512
redundant two-tier model, 27
reference points (ISDN), 395
referred, 22
reflective networks, 90
regional office routers, 412-413
registration authority, ATM address assignment, 121
reliability, 186, 299
reliable service protocols, X.25, 332, 339
design tips, 344
encapsulation, 333-334
flow control, 335
multiple SVCs, 341
over ISDN, 343
packet switching, 342
static routing, 342
versus Frame Relay, 345
WAN data links, 339-340
XOT, 335