1Q) trunks, VLAN, 32-35
Frame Relay networks, 334-335
multipoint subinterfaces, 338-339
point-to-point subinterfaces, 336-338
IPv6, 287-289
OSPF, 144-152
RIPng, IPv6, 287-288
VLAN
Ethernet (802.1Q) trunks, 32-35
port assignments, 37-38
VTP, 30-32
VTP, 30-32
console error messages (IOS CLI), 6
context-sensitive help (IOS CLI)
command syntax help, 7
question mark (?) command, 6
word help, 6
Controller con?¬?guration mode (IOS
Software), 5
converged networks, 106, 115
bridges
371
copy running-con?¬?g startup-con?¬?g command,
VTP
configuring, 31
troubleshooting, 82
cost of routing protocol metrics, 101
counts-to-in?¬?nity, routing loops, 107
CST (Common Spanning Trees), 56
D
data encryption, IPsec
3DES algorithm, 311
AES algorithm, 311
DES algorithm, 310
encryption keys, 309
RSA algorithm, 311
data integrity, IPsec, 308, 311-312
data link layer protocols, de?¬?ning over IPv6,
277
databases (topological), link-state, 140
DCE (Data Communications Equipment),
Frame Relay networks, 325
dead intervals, hello packets, 142
debug commands, OSPF, 152-154
debug eigrp packets command
troubleshooting EIGRP neighbor
relationships, 195
verifying EIGRP MD5 authentication,
198-199
debug frame-relay lmi command, 342-343
debug ip eigrp command, verifying EIGRP
con?¬?gurations, 180-181
debug ip nat command, NAT translation
tables, 262
debug ip nat detailed command, NAT
translation tables, 262
debug ip ospf adj command, troubleshooting
ospf neighbor adjacencies, 163
OSPF plaintext password authentication,
166
debug ip ospf events command, 152-153
debug ip ospf packet command, 153-154
debug ppp authentication command, WAN
authentication, 323
debug ppp negotiation command, WAN
authentication, 324
debug spanning-tree events command, 86
delays, routing protocol metrics, 101
deleting VLAN, 38-39
deny any statements, dynamic inside source
IPv4 address translation, 257
DES (Data Encryption Standard) algorithm,
IPsec, 310, 313
DH (Dif?¬?e-Helman) algorithm, IPsec, 313
DHCPv6 (Stateful) IPv6 address assignments,
279-282
disabled port state (bridges), STP, 52
distance vector routing, 100, 103
route discovery, 104
route maintenance, 105
route selection, 104
routing loops, 105
converged networks, 106
counts-to-in?¬?nity, 107
preventing via route poisoning,
109-110
preventing via split horizons, 109
troubleshooting via maximum metric
settings, 108
routing maintenance
hold-down timers, 110-115
triggered updates, 111-115
DLCI (Data-Link Connection Identi?¬?ers),
Frame Relay networks, 327-329
DR IP addresses, hello packets, 143
DSL (Digital Subscriber Lines), WAN, 316
DTE (Data Terminal Equipment), Frame
Relay networks, 325
dual stack IPv6 integration method, 283-285
dynamic 6to4 tunneling method, 284
Dynamic ACL (Access Control Lists), 214
benefits of, 215
configuration example, 215-216
uses for, 215
dynamic learning (Catalyst switch port
security), 72
Dynamic NAT (Network Address
Translation), 251, 257
dynamic routing
overview of, 98
routing protocols
administrative distance, 101-103
EGP (Exterior Gateway Protocols), 99
IGP (Interior Gateway Protocols),
99-100, 103-115
metrics, 101
multiple routes, 101
overview of, 99
dynamic routing
372
dynamic stickylearning (Catalyst switch port
security), 72
Dynamic VLAN port membership mode
(Catalyst switches), 24
E
Easy VPN (Virtual Private Networks),
301-303
EGP (Exterior Gateway Protocols), 99
EIGRP (Enhanced Interior Gateway Routing
Protocol)
authentication
key chains, 185-186
MD5 authentication,
188-190, 198-199
verifying, 190-191
classless routing, 172
configuring, 174-181
feasible successor routes, 173
features of, 171-172
load balancing, 172
equal-cost load balancing, 182
metrics, 181-182
unequal-cost load balancing, 182
variance example, 183-184
neighbor tables, 172
route determination, 173
route summarization, 172
con?¬?rming automatic summarization,
198
disabling automatic summarization,
175
successor routes, 173
topology databases, 173-174
topology tables, 172, 178-179
troubleshooting
MD5 authentication, 198-200
neighbor relationships, 192-195
route tables, 195-198
encapsulation, WAN, 320-323
encapsulation dotlq command, inter-VLAN
routing, 65
encryption, IPsec, 308
3DES algorithm, 311
AES algorithm, 311
DES algorithm, 310
encryption keys, 309
RSA algorithm, 311
equal-cost load balancing
EIGRP, 182
OSPF, 154-156
erase startup-con?¬?g command, vlan.
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