See advanced
distance vector routing
I
IANA (Internet Assigned Numbers
Authority), autonomous system number
assignments, 100
IGP (Interior Gateway Protocols), 99
advanced distance vector routing, 100, 122
distance vector routing, 100, 103
route discovery, 104
route maintenance, 105, 110-115
route selection, 104
routing loops, 105-110
EIGRP
authentication, 185-191, 198-199
classless routing, 172
con?¬?guring, 174-181
feasible successor routes, 173
features of, 171-172
load balancing, 172, 181-184
neighbor tables, 172
route determination, 173
route summarization, 172, 175, 198
successor routes, 173
topology databases, 173-174
topology tables, 172, 178-179
troubleshooting, 192-200
link-state routing, 100, 115
bene?¬?ts of, 116, 120-122
IS-IS protocol, 116
limitations of, 121
link-state refreshes, 116
IGP (Interior Gateway Protocols)
374
LSA, 116
LSP, 118
network hierarchies, 117-118
OSPF protocol, 116
SPF algorithms, 118
summary of routing database contents,
119-120
troubleshooting, 122
OSPF, 139
areas, 141
authentication, 156-159, 165-166
autonomous systems, 141
con?¬?guring, 144-152
debug commands, 152-154
hierarchy of, 140
load balancing, 154-156
loopback interfaces, 145-146
LSA packets, 140
neighbor adjacencies,
142-143, 161-163
network command, 144-145
ospf auto-cost reference-bandwidth
command, 144
router functions in, 141
router ospf command, 144
SPF algorithm, 143-144
topological (link-state) databases, 140
troubleshooting, 160-165
inbound ACL (Access Control Lists), 208-209
inside global addresses, NAT, 251, 258-261
inside local addresses, NAT, 251
inside source IPv4 addresses, translating, 253
dynamic addresses, 256
router processing order, 254-255
static addresses on routers, 255
integrity (data), IPsec, 311-312
interconnectivity, redundant switchednetwork
topologies, 40-42
interface command
ACL configuration, 223, 230, 234-235
dynamic inside source IPv4 address
translation, 256
overloading inside global addresses, 259
static inside source address translation, 255
Interface con?¬?guration mode (IOS Software),
5
interface serial command, 337-339
inter-VLAN connectivity, troubleshooting, 81
inter-VLAN routing, 64-66
inverse ARP (Address Resolution Protocol),
Frame Relay networks, 327, 333
IOS Software
CLI (command-line interface)
command review list, 7
con?¬?gure terminal command, 8
help, 6
terminal con?¬?guration mode, 4
configuration modes, 4
exiting, 5
switching between, 6
Privileged EXEC mode, 4
User EXEC mode, 4
IP (Internet Protocol), access list entry
sequence numbering, 213
ip access-group command
ACL configuration,
222-223, 230-231, 234-235
command parameters table, 230
ip access-list extended command, ACL
con?¬?guration, 235
ip access-list standard command, ACL
con?¬?guration, 234
IP addresses
network ID, classful prefix lengths, 123
subnets, 123-124
VLAN addressing schemes, 17
ip authentication key-chain eigrp 100
RouterXchain command, EIGRP
authentication, 189-190
ip authentication key-chain eigrp
autonomous-system name-of-chain
command, EIGRP authentication, 188
ip authentication mode eigrp 100 md5
command, EIGRP authentication, 189-190
ip authentication mode eigrp autonomoussystem
md5 command, EIGRP
authentication, 188
IP multicast traf?¬?c, 21
ip name-server command, IPv6 name
resolution, 287
ip nat translation command, 260
ip ospf authentication command, OSPF
plaintext password authentication, 157
IP packets, TTL values, 108
IP telephony, 21
IPsec, 273, 307
antireplay protection, 308
authentication, 308, 312
IGP (Interior Gateway Protocols)
375
confidentiality (encryption), 308
data encryption
3DES algorithm, 311
AES algorithm, 311
DES algorithm, 310
encryption keys, 309
RSA algorithm, 311
data integrity, 308, 311-312
framework protocols, 313
SSL VPN
bene?¬?ts of, 304
Certicom client, 306
components of, 305-306
restrictions of, 305
VPN 3002 Hardware Client, 307
VPN Software Client, 307
IPv4
address scalability.
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