eBGP, 285
EF, 337
EGP, 270
80/20 rule
life cycle costs, 46
network traffic, 2
element management, 299
encapsulating security payload (ESP), 367
encryption/decryption, 369–371
end devices, 72
end-to-end architectural model, 236–237
end-to-end characteristics, 301
end-to-end delay, 42, 124
enterprise requirements, 85
enterprise SLA, 347
Enterprise System Architectures: Building Client Server and Web Based Systems (Goodyear), 54
environment-specific thresholds, 113, 120, 140–142
error/loss rate, 120–121, 139
ESP, 367
Essentials of ATM Networks and Services (Ibe), 2, 386
Ethereal, 102
Etherpeak, 102
event, 304
event notification, 304–305
existing networks and migration, 78–80
expedited forwarding (EF), 337
exterior gateway protocol (EGP), 270
external BGP (eBGP), 285
external interfaces, 217
external relationships
addressing/routing architecture, 290–292
network management architecture, 325–326
performance architecture, 352–353
reference architecture, 227–228
security and privacy architecture, 379–380