Index_E

E

EBGP (External BGP), 480

case study, 550–554, 551–552

confirmation, 588

hidden route repair, 571–588

Martian filtering, 560–571

peering, 554–560

r1, 589–591

r2, 591–594

r3, 594–598

r4, 599–603

r5, 603–604

r6, 604–608

r7, 608–611

defined, 630

peering in, 481–482, 482–483

C1, 487–488

C2, 484–486

P1, 493–498

T1, 500–504

T2, 498–500

troubleshooting, 489–493

policy in, 504

export. See export policies

forwarding path confirmation, 540–541

import. See import policies

summary, 549

timers and knobs in, 541

AS loops, 542–543

incoming traffic flow, 543–547

local preferences, 547–548

ECSA (Exchange Carriers Standards Association), 629

edge routers, 628

edit group command, 390, 392–393

edit interfaces command, 92

edit policy-options command, 181

edit policy-options policy-statement command

in IS-IS, 306

in OSPF, 189

edit policy-statement command, 429

edit protocols bgp group command

in EBGP, 484

in IBGP, 405–406

edit protocols bgp group interval command, 376

edit unit command, 104

editor macros (Emacs), 629

EGP (Exterior Gateway Protocol), 629

egress routers, 629

EIA (Electronic Industries Association), 629

802.3ad link aggregation, 101

EIR (Equipment Identity Register), 629

electromagnetic interference (EMI), 629

Electronic Industries Association (EIA), 629

eligible keyword, 169–170

Emacs (editor macros), 629

embedded OS software, 629

emergency-level messages, 20

EMI (electromagnetic interference), 629

encapsulating security payload (ESP), 629

encapsulation

in ATM, 93

in Ethernet interfaces, 101

in Frame Relay

configuring, 71–79

point-to-multipoint connections, 80–82, 81

verifying, 79–80

in leaky bucket rate limiting, 119

with POS interfaces, 65–66

PPP, 82–88, 83

encryption in ATM, 90

end system entities, 629

end-to-end ATM switches, 95

Equipment Identity Register (EIR), 629

EROs (Explicit Route Objects), 629

escape sequence for IOS prompt, 6

ESP (encapsulating security payload), 629

Established neighbor state

defined, 629

in EBGP peering, 489

Ethernet interfaces, 101

aggregated, 114–117, 114

logical properties for, 102–103

MAC address filtering in, 111–113

physical properties for, 101, 102

summary, 114

VLAN and VRRP configuration for

r1, 103–105

r2, 105–107

VRRP authentication and tracking in, 107–111

exact match type, 629

exception packets, 629

Exchange adjacency state, 629

Exchange Carriers Standards Association (ECSA), 629

EXEC mode passwords, 3

exit command, 15

Explicit Route Objects (EROs), 629

export policies

EBGP, 520

hidden route repair, 520–525, 522, 571–588

route filtering, 525–540

IBGP

confederations, 412

r5, 423–424

r6, 422–423

OSPF, 218–221, 231–235

ExStart adjacency state, 629

extensive option

for leaky bucket rate limiting, 121

for POS interfaces, 67

Exterior Gateway Protocol (EGP), 629

External BGP. See EBGP (External BGP)

external LSA generation, 181–182

external metrics, 630

external option for confederations, 412