Table Of Contents
Index: Cisco IOS IP and IP Routing Configuration Guide
Symbols A B C D E F G H I J K L M O P Q R S T U V W
Symbols
? command xxxv
A
abbreviating commands
context-sensitive help xxxv
accept-lifetime command P1C-313
for DRP P1C-81
for IP Enhanced IGRP P1C-214
access-class command P1C-87
access control
access groups
IP P1C-88
access lists
IP
applying on inbound or outbound interfaces P1C-87
applying to interface P1C-87
BGP access list filters P1C-246
configuration examples P1C-104, P1C-105
controlling NHRP initiation P1C-22
dynamic P1C-83
extended P1C-82, P1C-83, P1C-84
implicit deny when no match found P1C-84, P1C-86
named P1C-84
creating 1
time-based P1C-86
undefined P1C-88
violations, accounting P1C-92
violations, logging P1C-83, P1C-85
virtual terminal lines, setting on P1C-87
address family configuration
NLRI to address family configuration, converting P1C-286
address pool names
creating P1C-66
address pools
obtaining IP addresses P1C-63
address ranges, summarizing
IS-IS for IP P1C-227
OSPF P1C-184
address resolution
establishing for IP P1C-12
Address Resolution Protocol
See ARP
adjacency levels
IS-IS for IP, specifying P1C-224
administrative distance
BGP, setting P1C-261
definition P1C-307
aggregate address
BGP P1C-249
aggregate-address command P1C-249
area authentication command P1C-182
area default-cost command P1C-182
area nssa command P1C-183
area-password command P1C-226
area range command P1C-184
area stub command P1C-182
area tag
IS-IS P1C-220
area virtual-link authentication command P1C-185
ARP
IP
encapsulations, setting P1C-14
proxy ARP, description P1C-28
proxy ARP, disabling P1C-14
table, displaying contents P1C-46
timeout P1C-14
arp arpa command P1C-14
ARP cache
See ARP table
arp command
IP P1C-13
ARP encapsulation P1C-14
arp probe command P1C-14
arp snap command P1C-14
ARP table
IP
contents, displaying P1C-14
defining static P1C-13
arp timeout command P1C-14
ATM
point-to-multipoint SVC P1C-370, P1C-372
SVC
point-to-multipoint P1C-370, P1C-372
VC status, displaying P1C-382
atm multipoint-signaling
with IP multicast P1C-372
authentication
dynamic P1C-82
IP Enhanced IGRP packets P1C-214
IP Enhanced IGRP route P1C-214
NHRP, configuring P1C-21
of DRP queries and responses P1C-80
authentication, MD5
See MD5 authentication
automatic route summarization, disabling P1C-160
autonomous systems
BGP
AS paths to remote networks, providing P1C-240
exchange of routing information between P1C-231
IGRP
(example) P1C-317
more than one connection to an external network P1C-167
redistribution from P1C-305
system routes within P1C-167
number
gateway of last resort P1C-167
number needed for EGPs P1C-3
OSPF
autonomous system network map (figure) P1C-200, P1C-322
routing for destinations outside autonomous system P1C-182
auto-summary (BGP) command P1C-250
auto-summary command
IP Enhanced IGRP P1C-213
RIP P1C-160
B
back channel P1C-414
bandwidth percentage for IP Enhanced IGRP P1C-212
beacon command P1C-425
BGP
administrative distance
defaults P1C-300
autonomous system P1C-303
community list matching P1C-303
metric translations P1C-304
route maps P1C-302
BGP (Border Gateway Protocol)
administrative distance
setting P1C-261
advertisement interval P1C-259
aggregate routes, configuring P1C-249
(example) P1C-276
authentication on TCP connection P1C-260
automatic network number summarization, disabling P1C-250
backdoor routes, configuring P1C-261
Cisco implementation P1C-231
classless interdomain routing (CIDR) P1C-232, P1C-249
community filtering P1C-250
confederation P1C-254
configuration (examples) P1C-269 to P1C-279
configuration task list P1C-233
configuring P1C-231 to P1C-263
connections
displaying status P1C-268
resetting EBGP immediately P1C-249
default local preference value, changing P1C-262
enabling P1C-235
filter P1C-259
IP routing table, updating P1C-261
mesh reduction
confederation method P1C-254
route reflector method P1C-254
multicast
See multiprotocol BGP
Multi Exit Discriminator (MED) metric P1C-248
multipath support P1C-233
multiprotocol BGP
See multiprotocol BGP
neighbor configuration (example) P1C-272
neighbor options P1C-251
network 0.0.0.0, redistributing P1C-263
next-hop processing, disabling P1C-247
path filtering by neighbor P1C-246
peer groups
clearing P1C-267
configuring P1C-258
displaying P1C-268
prefix filtering with inbound route maps P1C-249
prefix limit P1C-259
route dampening
dampened routes, displaying P1C-267
dampening information, clearing P1C-267
description P1C-264
enabling P1C-266
factors, configuring P1C-266
flap statistics, clearing P1C-266
flap statistics, displaying P1C-266
unsuppress the routes P1C-267
route filtering by neighbor P1C-242
route maps
configuration (example) P1C-269
route reflector P1C-254 to P1C-258
route selection rules P1C-231
routing domain confederation P1C-254
supernets P1C-249
synchronization with IGPs P1C-240
TCP MD5 authentication
(example) P1C-282
for a neighbor P1C-260
for a peer group P1C-259
timers, adjusting P1C-262
version, controlling P1C-248
Version 4 P1C-232
weight P1C-248
weight, configuring P1C-241
BGP (Border Gateway Protocol) neighbors, configuring P1C-235
bgp always-compare-med command P1C-263
bgp bestpath as-path ignore command P1C-242
bgp bestpath med-confed command P1C-263
bgp bestpath missing-as-worst command P1C-263
bgp client-to-client reflection command P1C-257
bgp cluster-id command P1C-257
BGP Conditional Advertisement
benefits P1C-252
configuration examples P1C-279
configuration tasks P1C-252
configuring P1C-252
overview P1C-252
troubleshooting tips P1C-253
verifying P1C-253
bgp confederation identifier command P1C-254
bgp confederation peers command P1C-254
bgp dampening command P1C-266
bgp default local-preference command P1C-262
bgp deterministic med command P1C-264
bgp fast-external-fallover command P1C-249
bgp log-neighbor-changes command P1C-268
bootfile command P1C-69
broadcast networks
OSPF, configuring P1C-180
broadcasts
IGRP update frequency P1C-168
IP
and transparent bridging spanning-tree protocol P1C-33
definition P1C-30
directed P1C-30
flooding (example) P1C-58
solution to storms P1C-31
types P1C-30
C
cautions
IP access lists P1C-82, P1C-84
usage in text xxix
CCO
accessing xxx
definition xxx
CDP
dialer mappings, using with P1C-152
ODR routing information P1C-150
ODR timers, relationship to P1C-151
reconvergence of IP routes P1C-151
timer P1C-151
updates P1C-151
cdp enable command P1C-150
cdp run command P1C-150
cdp timer command P1C-151
CEF
enabling for forwarding agent P1C-98
CELP P1C-368
CGMP
clearing P1C-381
enabling P1C-376
proxy P1C-376
CIDR (classless interdomain routing)
aggregate routes, configuring P1C-249
benefit P1C-249
description P1C-232
Cisco Connection Online
See CCO
Cisco Express Forwarding
See CEF
Cisco Group Management Protocol
See CGMP
Cisco IOS
saving configuration changes xxxviii
Cisco IOS DHCP server
address pool configuration
(example) P1C-71
benefits P1C-64
boot file, specifying P1C-69
configuration task list P1C-65
database agent configuration
(example) P1C-71
enabling P1C-70
manual bindings configuration
(example) P1C-72
monitoring and maintaining P1C-70
overview P1C-63
ping
number of packets P1C-69
timeout value P1C-70
prerequisites P1C-65
class D IP addresses P1C-336
classless interdomain routing
See CIDR
clear access-list counters command P1C-101
clear arp-cache command P1C-45
clear host command P1C-45
clear ip accounting command P1C-101
clear ip bgp command P1C-237, P1C-238, P1C-242, P1C-267
clear ip bgp dampening command P1C-267
clear ip bgp flap-statistics command P1C-266
clear ip bgp peer-group command P1C-267
clear ip cgmp command P1C-381
clear ip dhcp binding command P1C-70
clear ip dhcp conflict command P1C-70
clear ip dhcp server statistics command P1C-70
clear ip drp command P1C-101
clear ip eigrp neighbors command P1C-216
clear ip igmp group command P1C-381
clear ip mobile traffic command P1C-122
clear ip mrm status-report command P1C-426
clear ip mroute command P1C-381
clear ip msdp peer command P1C-404
clear ip msdp sa-cache command P1C-404
clear ip msdp statistics command P1C-404
clear ip nat translation command P1C-45
clear ip nhrp command P1C-47
clear ip pgm router command P1C-412
clear ip pim auto-rp command P1C-381
clear ip prefix-list command P1C-246
clear ip route command P1C-45, P1C-314
clear ip rtp header-compression command P1C-381
clear ip sdr command P1C-381
clear tcp statistics command P1C-101
client's hardware address
specifying P1C-69
client-identifier command P1C-69
client-name command P1C-69
command modes
summary (table) xxxiv
commands
ip summary-address rip P1C-157, P1C-159
command syntax conventions
Cisco IOS documentation xxix
COMMUNITIES attribute P1C-250
community display format, specifying P1C-251
community list, creating P1C-251
community path attribute P1C-250
Compressed Encoding for Linear Prediction (CELP) P1C-368
conditional default origination
IS-IS P1C-226
OSPF
description P1C-185
configuration, saving xxxviii
configured inbound soft reset (BGP) P1C-238
configured resets (BGP) P1C-238
ContentFlow Architecture
benefits P1C-97
ContentFlow architecture
Flow Delivery Agent (FDA) P1C-98
MNLB forwarding agent and P1C-98
related technologies P1C-98
CSNP interval
IS-IS for IP, configuring P1C-222
D
DDR
CDP packets P1C-152
debug ip dhcp server command P1C-70
debug ip mbgp updates command P1C-294
debug ip mobile advertise command P1C-122
debug ip mobile host command P1C-122
debug ip msdp command P1C-403
debug ip msdp resets command P1C-403
default form of a command
using xxxvii
default-information command P1C-304
default-information originate (BGP) command P1C-263
default-information originate command
IS-IS P1C-226
OSPF P1C-185
default-metric (BGP) command P1C-248
default-metric command
BGP, OSPF, RIP P1C-304
IP Enhanced IGRP, IGRP P1C-304
default networks
specifying P1C-301
Default Passive Interface P1C-306
default router
specifying P1C-68
default-router command P1C-68
default routes
IP
determining gateway of last resort P1C-302
specifying P1C-301
IS-IS for IP, generating P1C-226
OSPF, generating P1C-185
deny command P1C-84
designated routers
IS-IS for IP, specifying election P1C-224
DHCP
and BOOTP packets P1C-32
dhcpack P1C-64
dhcpdecline P1C-64
dhcpdiscover P1C-63
dhcpoffer P1C-63
dhcprequest P1C-64
DHCP server boot file
specifying P1C-69
dialer mappings
and CDP packets P1C-152
Director Response Protocol
See DRP Server Agent
disabling
AS path comparison P1C-242
bgp neighbor or peer group P1C-260
disabling automatic route summarization P1C-160
distance bgp command P1C-261
distance command P1C-307
Distance Vector Multicast Routing Protocol (DVMRP)
See IP multicast routing, DVMRP
DistributedDirector
See also DRP Server Agent P1C-79
distribute-list in command P1C-151, P1C-307
distribute-list out command P1C-151, P1C-307
DNS
IP dynamic name lookup (example) P1C-49
IP name server P1C-16
ISO CLNS addresses, configuring P1C-17
OSPF lookup of DNS names P1C-185
using to assign device names P1C-17
dns-server command P1C-67
documentation conventions
Cisco IOS xxviii
domain list, establishing IP (example) P1C-49
domain-name command P1C-67
domain name for the client
specifying P1C-67
domain-password command P1C-226
domains
OSPF P1C-305
PIM P1C-348
routing information, redistributing between P1C-302
DRP P1C-79
DRP Server Agent
authenticate queries and responses P1C-80
description P1C-79
displaying information P1C-101
enabling P1C-80
key management P1C-80
limit source of queries P1C-80
statistics, clearing P1C-101
DVMRP
See IP multicast routing, DVMRP
DVMRP (Distance Vector Multicast Routing Protocol)
routes
redistribute into multiprotocol BGP P1C-291
dynamic command P1C-85
Dynamic Host Configuration Protocol
See DHCP
dynamic inbound soft reset, BGP P1C-237
dynamic outbound soft reset (BGP P1C-238
E
EGP
supported protocols P1C-3
eigrp log-neighbor-changes command P1C-212
encapsulation
split horizon for Frame Relay P1C-161, P1C-173
split horizon for SMDS P1C-161, P1C-173
Enhanced IGRP
See AppleTalk, Enhanced IGRP; IP Enhanced IGRP
Ethernet
simplex circuit, configuring P1C-79
Express RTP and TCP Header Compression P1C-370
extended networks
using IP secondary addresses P1C-9
Exterior Gateway Protocols (EGPs), list P1C-3
F
fast switched policy routing P1C-310
filtering routes
by a group of prefixes P1C-274
by a group prefix list P1C-273
by prefix list P1C-243
filters
IP
on routing information P1C-305
on sources of routing information P1C-307
suppressing routes from being advertised P1C-307
suppressing routes from being processed P1C-307
suppress routing updates P1C-305
See also access lists, IP
IP Enhanced IGRP
offsets for routing metrics P1C-155, P1C-169, P1C-213
See also access lists, IP
flexible netmask display P1C-46
Flow Delivery Agent
See ContentFlow architecture, Flow Delivery Agent (FDA)
Foreign Agent services, enabling (Mobile IP) P1C-120
forwarding agent
See MNLB forwarding agent
forwarding-agent command P1C-100
forwarding-agent pools command P1C-100
Frame Relay
split horizon P1C-161, P1C-173
frame-relay ip rtp header-compression command P1C-369
frame-relay map ip compress command P1C-369
frame-relay map ip rtp header-compression command P1C-369
functional address P1C-351
G
g P1C-268
gateway of last resort, definition P1C-167, P1C-302
global configuration mode
summary xxxiv
GRE
tunneling
alternative to IP multicast routing P1C-366
H
hardware-address command P1C-69
hello packets
IP Enhanced IGRP
interval between P1C-215
valid time P1C-215
IS-IS for IP, advertised interval, setting P1C-222
OSPF, setting advertised interval P1C-179
help command xxxv
helper addresses
IP
(example) P1C-58
configuring P1C-32
hit count, prefix table P1C-246
holddown
definition P1C-168
disabling (IGRP) P1C-172
hold time
IP Enhanced IGRP P1C-215
home agent redundancy, Mobile IP P1C-117
Home Agent services, enabling (Mobile IP) P1C-119
host command P1C-69
Hot Standby Router Protocol
authentication P1C-90
burned-in-address P1C-90
enabling P1C-89
home agent redundancy P1C-117
MAC refresh interval P1C-90
(example) P1C-107
MIB P1C-91
(example) P1C-107
notifications P1C-91
preemption delay P1C-90
preempt lead router, configuring P1C-90
priority, setting P1C-90
SNMP traps and informs P1C-91
timers, setting P1C-90
traps P1C-91
HP hosts, on network segment, example P1C-49
HP Probe Proxy, configuring name requests for IP P1C-17
hub router P1C-150
ODR environment P1C-149
I
ICMP
customizing services (example) P1C-102
ICMP Mask Reply messages, enabling P1C-77
ICMP Protocol Unreachable messages, disabling P1C-76
ICMP Redirect messages, disabling P1C-76
ICMP Router Discovery Protocol
See IRDP
IGMP
See IP multicast routing, IGMP
ignore lsa mospf command P1C-192
IGP, supported protocols P1C-3
IGRP
autonomous systems P1C-305
Cisco implementation P1C-167
configuration task list P1C-168
configuring P1C-167
enabling P1C-169
metrics, adjusting P1C-171
redistribution
(example) P1C-317
description P1C-305
route feasibility, determining P1C-170
route redistribution P1C-304
running with RIP P1C-160
source IP address, validating P1C-173
timers, adjusting P1C-172
traffic distribution, controlling P1C-171
transitioning to IP Enhanced IGRP P1C-212
unicast updates, allowing P1C-170
update broadcasts P1C-168
updates, frequency P1C-168
inbound resets, BGP P1C-237
integrated routing and bridging
IP P1C-30
interface command P1C-99
interface configuration mode
summary xxxiv
interfaces
circuit type, setting for IS-IS for IP P1C-224
IP addresses
assigning multiple P1C-9
primary P1C-8
secondary P1C-9
interface tunnel command
UDLR tunnel P1C-415
Interior Gateway Protocols (IGPs), list P1C-3
Interior Gateway Routing Protocol
See IGRP
Internet Control Message Protocol
See ICMP
Internet Group Management Protocol
See IP multicast routing, IGMP
Internet Protocol
See IP
IP
access lists
applying on inbound or outbound interfaces P1C-87
applying to an interface P1C-87
extended, applying time ranges P1C-86
extended, creating P1C-82, P1C-84
implicit deny when no match found P1C-84, P1C-86
implicit masks (example) P1C-104
named P1C-84
standard, creating P1C-82, P1C-84
undefined P1C-88
violations P1C-92
violations, accounting P1C-92
violations, logging P1C-83, P1C-85
virtual terminal lines, setting on P1C-87
accounting, configuring P1C-91
addresses
assigning to interfaces P1C-7
classes P1C-7
domain name, specifying P1C-16
helper P1C-32
helper (example) P1C-57, P1C-58
helper, description P1C-32
list of reserved (table) P1C-8
mapping logical names to P1C-15
multiple P1C-9
multiple, assigning P1C-9
primary P1C-8
addressing
monitoring tasks P1C-45
address resolution P1C-12
administrative distances, defaults P1C-300
advertising, definition P1C-153
authentication keys P1C-313
broadcast flooding (example) P1C-58
broadcasting (example) P1C-57
broadcasts
and transparent bridging spanning-tree protocol P1C-33
directed P1C-30
types P1C-30
default gateway
definition P1C-28
enabling P1C-28
directed broadcasts P1C-31
domains, establishing (example) P1C-49
dynamic access list P1C-83, P1C-85
helper address
(example) P1C-58
configuring P1C-32
integrated routing and bridging P1C-30
local-area mobility
configuring P1C-14
redistributing routes P1C-15
local policy routing P1C-310
metric translations P1C-304
monitoring tasks P1C-100
for IP multicast P1C-381
for IP routing P1C-313
multicast routing
See IP multicast routing
named access lists P1C-84
name server, specifying P1C-17
NAT
See NAT
performance parameters P1C-92
PIM
See IP multicast routing, PIM
policy routing P1C-308, P1C-310
fast switched P1C-310
precedence P1C-309
(table) P1C-309
primary address P1C-8
protocol, description P1C-1
routing
assistance when disabled P1C-27
enabled by default P1C-27
over simplex Ethernet interface P1C-79
routing processes, maximum number P1C-4
routing protocols
choosing P1C-30
secondary addresses P1C-9
serial interface, enabling on P1C-11
serial interfaces, processing on P1C-11
source-route header options, configuring P1C-78
split horizon
enabling and disabling P1C-161, P1C-173
static routing redistribution (example) P1C-317
subnet zero, enabling P1C-9
TCP headers, compressing P1C-93
TCP performance parameters P1C-92
tunnel interface, enabling on P1C-11
UDP broadcasts, enable forwarding of P1C-32
UDP datagrams
flooding P1C-34
speeding up flooding P1C-34
WANs, configuring over P1C-97
ip access-group command P1C-87
ip access-list command P1C-84, P1C-85
ip accounting command P1C-92
ip accounting-list command P1C-92
ip accounting-threshold command P1C-92
ip accounting-transits command P1C-92
ip address (secondary) command P1C-9
ip address command P1C-186
primary IP address, setting P1C-8
IP addresses
static P1C-64
ip as-path access-list command P1C-246
ip authentication key-chain eigrp command P1C-214
ip authentication mode eigrp command P1C-214
ip bandwidth-percent eigrp command P1C-212
ip bgp-community new-format command P1C-251
ip broadcast-address command P1C-32
ip casa command P1C-100
ip cef command P1C-98
ip cef traffic-statistics command P1C-24
ip cgmp command P1C-376
ip classless command P1C-11
ip community-list command P1C-251
ip default-gateway command P1C-28
ip default-network command P1C-301
ip dhcp conflict logging command P1C-66
ip dhcp database command P1C-66
ip dhcp excluded-address command P1C-66
ip dhcp ping packets command P1C-69
ip dhcp ping timeout command P1C-70
ip dhcp pool command P1C-66, P1C-69
ip directed-broadcast command P1C-31
ip domain-list command P1C-16
ip domain-lookup command P1C-17
ip domain-lookup nsap command P1C-17
ip domain-name command P1C-16
ip drp access-group command P1C-80
ip drp authentication key-chain command P1C-80
ip drp server command P1C-80
ip dvmrp accept-filter command P1C-350
ip dvmrp auto-summary command P1C-363
ip dvmrp default-information command P1C-350
ip dvmrp metric command P1C-348, P1C-349
ip dvmrp metric mbgp command P1C-291
ip dvmrp metric-offset command P1C-363
ip dvmrp reject-non-pruners command P1C-365
ip dvmrp routehog-notification command P1C-362
ip dvmrp route-limit command P1C-362
ip dvmrp summary-address command P1C-362
ip dvmrp unicast-routing command P1C-362
IP Enhanced IGRP
authentication, enabling P1C-214
bandwidth percentage P1C-212
Cisco implementation P1C-209
enabling P1C-211
features P1C-210
filters
offsets for routing metrics P1C-155, P1C-169, P1C-213
IGRP, transitioning from P1C-212
interfaces, displaying P1C-217
log neighbor adjacencies P1C-212
metrics, adjusting P1C-212
offsets, applying P1C-155, P1C-169, P1C-213
redistribution
(examples) P1C-318
RIP and IP Enhanced IGRP (example) P1C-319
route authentication P1C-214
route summarization P1C-213
split horizon, enabling P1C-216
timers, adjusting P1C-215
ip flow-cache entries command P1C-99
ip forward-protocol command P1C-32
ip forward-protocol spanning-tree command P1C-34
ip forward-protocol turbo-flood command P1C-34
ip hello-interval eigrp command P1C-215
ip helper-address command P1C-32
ip hold-time eigrp command P1C-216
ip host command P1C-16
ip hp-host command P1C-18
ip icmp rate-limit unreachable command P1C-76
ip igmp access-group command P1C-344
ip igmp helper-address command P1C-377, P1C-416
ip igmp join-group command P1C-99, P1C-344, P1C-346
ip igmp query-interval command P1C-345
ip igmp query-max-response-time command P1C-346
ip igmp query-timeout command P1C-345
ip igmp static-group command P1C-346
ip igmp unidirectional-link command P1C-416
ip igmp version command P1C-345