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P1 peering, 493–498, 554–555
packages, 30, 642
packet data protocol (PDP), 642
packet flood ping testing
for ATM traffic shaping, 99
for leaky bucket rate limiting, 122–123
for POS interfaces, 70–71
Packet Forwarding Engine, 642
packet loops in RIP, 213
Packet Loss Priority (PLP), 642
Packet Loss Priority (PLP bit), 643
Packet Over SONET. See POS (Packet Over SONET) interfaces
PAP (Password Authentication Protocol), 85
parity in ATM, 90
partial sequence number PDU (PSNP), 642
passive mode
in EBGP, 491
in IBGP, 427–429, 459–460
in OSPF, 160
Password Authentication Protocol (PAP), 85
password keyword, 16
passwords
EXEC mode, 3, 6
in IS-IS, 279
for lab accounts, 16–17
for users, 47
path attribute, 642
path-vector protocols, 642
PathErr messages, 642
PathTear Messages, 642
payload scrambling
in ATM, 90
in POS interfaces, 65
PCI (Peripheral Component Interconnect) standard, 643
PCMCIA (Personal Computer Memory Card International Association), 643
PDP (packet data protocol), 642
PDUs (protocol data units)
defined, 644
in IS-IS, 258–260
PE (provider edge) routers, 644
peak bit rate, 98
PECs (Policing Equivalence Classes), 643
peer-as option, 412
peer-export option, 530
peer sites
in community tagging, 517–518
in route filtering, 529–538
peering
defined, 642
in EBGP, 481–482, 482–483
C1, 487–488
C2, 484–486
case study, 554–560
P1, 493–498
T1, 500–504
T2, 498–500
troubleshooting, 489–493
in IBGP
initial setup, 374–377, 375
policies, 377–383
penultimate hop popping (PHP) mechanism, 642
penultimate routers, 642
Perfect Forward Secrecy (PFS), 643
performance of OSPF, 179
Peripheral Component Interconnect (PCI) standard, 643
permanent virtual circuits (PVCs)
in ATM, 89
defined, 643
for Frame Relay, 71
Personal Computer Memory Card International Association (PCMCIA), 463
PFS (Perfect Forward Secrecy), 643
PHP (penultimate hop popping) mechanism, 642
Physical Interface Cards (PICs), 643
physical interface peering
with C-BGP, 444
in IBGP, 388
Physical Layer Convergence Protocol (PLCP), 90
physical properties
for ATM interfaces, 90–91
for Ethernet interfaces, 101, 102
for POS interfaces, 65–68
PIC I/O Manager ASIC, 643
PICs (Physical Interface Cards), 643
PIM (Protocol Independent Multicast) protocol, 644
ping size command, 99–100
ping testing
for ATM
traffic shaping, 99–100
virtual circuits, 94–95
for EBGP
peering, 489–490, 495
route filtering, 531–532
for IS-IS, 272
for leaky bucket rate limiting, 122–123
for loopback interfaces, 61
for MAC address filtering, 113
for OoB management network configuration, 10
for ops account, 19
for POS interfaces, 70–71
for unnumbered interfaces, 126
PLCP (Physical Layer Convergence Protocol), 90
PLMNs (public land mobile networks), 644
PLP (Packet Loss Priority), 642
PLP bit (Packet Loss Priority) bit, 643
point-to-multipoint connections, 80–82, 81
Point-to-Point Protocol (PPP)
defined, 643
for POS interfaces
CHAP authentication for, 85–88
configuring, 82–83, 83
verifying, 83–85
poison reverse method, 643
policies
EBGP, 504
export. See export policies
import. See import policies
IBGP, 377–383
OSPF routing, 201–202, 202
redistribution, 204–212
verifying, 213–221, 214–215
policing, 643
Policing Equivalence Classes (PECs), 643
policy chains, 643
poll expectation timers, 78
poll-interval parameter, 169
polls for Frame Relay, 77–78
popping, 643
POS (Packet Over SONET) interfaces, 64, 65
encapsulation options for
Frame Relay, 71–82, 81
PPP, 82–88, 83
logical properties of, 68–69
physical properties of, 65–68
summary, 89
verifying, 69–71
PPP (Point-to-Point Protocol)
defined, 643
for POS interfaces
CHAP authentication for, 85–88
configuring, 82–83, 83
verifying, 83–85
ppp-options option, 86
precedence bits, 643
preferences
defined, 644
in EBGP, 547–548
in IBGP, 422–426, 429–435
preferred addresses
defined, 644
with loopback interfaces, 62
prefix advertising, 505
prefix-length-range match type, 644
prefix-limit option, 556–557
prepend policy option, 585–586
primary addresses
defined, 644
with loopback interfaces, 62–63
primary contributing routes, 644
primary interfaces, 644
primary option, 63
priorities
for DR, 171
in IS-IS, 330–331
in VRRP, 104, 108, 110–111
privileged EXEC mode passwords, 3, 6
protocol addresses, 644
protocol data units (PDUs)
defined, 644
in IS-IS, 258–260
protocol families, 644
Protocol Independent Multicast (PIM) protocol, 644
protocol next hops for confederations, 415
protocol preference value, 644
protocol tracing
in IS-IS authentication, 285
in OSPF authentication, 177–178
in SNMP, 24
provider edge (PE) routers, 644
provider routers, 644
Prune messages, 644
PSNP (partial sequence number PDU), 642
.pub extension, 13
public keys, 11, 13
public land mobile networks (PLMNs), 644
PVCs (permanent virtual circuits)
in ATM, 89
defined, 643
for Frame Relay, 71
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