P

Packaging, router, 122

Packets, 9, 38, 57, 93-94

PAP (Password Authentication Protocol), 264

Passwords

configurations, 262

enable and enable secret, 115-16

enable, recovering, 170-72

line, 113-15, 173

protocols, 262

recovery, 169-74

routers, 112-16

PAT, 72

Permanent virtual circuits, 53

Personal digital assistants (PDA), 15

Physical media, 8

Ping, 626-27, 648

Point-to-Point Protocol (PPP), 107, 180, 181, 251

Polling groups, 532-33, 539-41

Port numbers, 58, 61

PortChannel, 426

Ports, 37

auxiliary, 101, 142

console, 100-101

grouping, 228

monitoring, 229-30

network, 230

router, 118-22

security, 235-36, 424

switch configuration, 226-27

PRI (Primary Rate Interface) circuit, 50

Private Internets, 71

Protocols

Address Resolution, 233

application, 8

authentication, 262-64

Cisco Discovery, 165-69

Cisco Group Multicast Protocol (CGMP), 236-37

connection-less, 57

defined, 14

dial-in, 251

Internet, 13

Internet Control Protocol (ICMP), 294

internetworking, 14-16

maintenance, 15-16

passwords, 262

RADIUS, 257-59

reliable, 57

routing, 476-519

SAN, 415-16

spanning test, 221-22

Spanning-Tree Protocol (STP), 238-39

TACACS+, 257-59

token-passing, 42

Transmission Control Protocol (TCP), 294

unreliable, 57

User Datagram Protocol (UDP), 294

VLAN Membership Policy Server, 222

VLAN Query, 222

VLAN trunk, 222

Proxy servers, 298-300

Pulse Code Modulation (PCM), 389