stateful filters, 567-568
DES, 576
Diffie-Hellman, 575
digital signatures, 574
encryption keys, 573
ESP, 571
hashing algorithms, 574
IKE, 575-576
PKI (Public Key Infrastructure), 575
public key encryption, 574
VPNs, 576
L2TP, 578
segmentation
LAN switching, 90-91
switching, 84-85
devices, 56-57
network infrastructure, campus networks, 52
remote user access equipment, 408-409
BRI routers, 409
central site routers, 413-415
Cisco 3600 series routers, 415
PRI routers, 409
regional office routers, 412-413
telecommuter routers, 409-410
transport protocol for DLSw+, 489-490
trunks, 627
WAN technologies, ISDN, 298
service classes, 533-534
setting IP Precedence, 533-534
SHA (Secure Hash Algorithm), 575
shared secret keys, 576
shared-media LANs, segmentation, 91
shielding, 86
show frame-relay pvc command, 356
show process command, 361
show run command, 526
signaling
SS7, 600
VoATM, 605-606
VoFR, 607
voice over data networks, 598-600
VoIP, 608
single domain model (Windows networking), 274-275
single point of failure, collapsed backbone, 52
single-mode fiber, 88
single-protocol IP backbone, 310
Skeme key exchange, 575
SLAs, CIR
measurement interval, 355
oversubscription, 355
SLS (secondary link station), 458
SLUs (secondary logical units), 442
small-scale networks
ring model, 19-20
star model, 18, 20
composite network nodes, 491
control points, 491
dependent LUs, 493
end nodes, 491