Index_E

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E

EcoSYSTEMS, 350–52

defined, 350–51

EcoPREDICTOR, 351

EcoSCOPE, 351–52

EcoTOOLS, 351–52

historical trending reports, 352

Electronically erasable read-only memory (EEROM), 153

Element management systems (EMSs), 100

Encryption, 310–18

asymmetric, 311

cryptographic methods, 310–11

defined, 310

deployment issues, 316–18

DES, 311–12

implementation recommendations, 312–16

improper configuration, 317

key management automation, 314

key management implementation, 314

keys, dynamic, 313

keys, retiring, 314

keys, safeguarding, 313

keys, session, 313–14

keys, weak, 317–18

symmetric, 311

VPN vulnerability, 318

See also Security

Enhanced diversity routing option (EDRO), 361–62

Enterprise systems connection (ESCON), 79, 81

Equipment requirements, 391–94

service/repair documentation, 393–94

spares inventory, 392

test equipment, 392–93

See also Maintenance and support

Error logs, 147

Ethernet, 2–6, 27

defined, 2

error statistics, 143–44

frame format, 2–4

frame format comparison, 3

media access control, 4–5

See also LANs

Event notification, 50–51

console messages, 50

e-mail messages, 50

pager messages, 51

processing, 51

Extended super frame (ESF), 189

ANSI T1.403, 215

CSU, 216

defined, 214

original, 215

performance data, 216

Extranets, 249–53

accessibility, 249

advantages, 249–50

building, 250

defined, 244, 249

ICPs, 250

IP addressing for, 242

large, 252

management, 250–51

outsourcing, 250

performance criteria, 250

security, 251

tactical information aggregation, 252–53

uses, 249

See also IP networks

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