X port-based authentication,
73-75
access security, 68-71
Cisco Discovery Protocol, 70
handling compromises, 70-71
ports, 71-73
protocol security, 70
STP, 70
trunk links, 71
security policies, characteristics of, 68
segments (STP), designated port selection, 50
send-lifetime command, 186-187
server mode (VTP), 27
service password-encryption command,
OSPF plaintext password authentication,
157
service-encryption command, EIGRP
authentication, 187
service-encryption command, EIGRP authentication
380
setup utility, 4
SHA-1 (Secure Hash Algorithm-1), IPsec,
312-313
show access-list command
ACL configuration, 230
troubleshooting ACL, 239-241
verifying NAT translations, 268
show command
EIGRP, verifying configurations, 176-180
OSPF, verifying configurations, 146-152
show controllers serial command,
troubleshooting Frame Relay network
connectivity, 349
show frame-relay lmi command
output fields of, 341
troubleshooting Frame Relay network
connectivity, 350
verifying Frame Relay networks, 340-342
show frame-relay map command
troubleshooting Frame Relay network
connectivity, 352
verifying Frame Relay networks, 346
show frame-relay pvc command
output fields of, 344-346
verifying Frame Relay networks, 340, 344,
350
show interface command
PPP WAN encapsulation, 322-323
troubleshooting EIGRP neighbor
relationships, 193
troubleshooting ospf neighbor adjacencies,
162
troubleshooting port connectivity, 79
show interface serial command,
troubleshooting Frame Relay network
connectivity, 348-350
show interface switchport command,
troubleshooting port connectivity, 79
show interfaces command, verifying Frame
Relay networks, 340
show interfaces switchport command,
displaying VLAN information for a speci?¬?c
interface, 38
show ip access-list command, troubleshooting
ACL, 239
show ip eigrp interfaces command
troubleshooting EIGRP neighbor
relationships, 194
verifying EIGRP configurations, 176-177
show ip eigrp neighbors command
troubleshooting EIGRP neighbor
relationships, 193
verifying EIGRP authentication, 190-191
verifying EIGRP configurations, 177-178
verifying EIGRP MD5 authentication, 199
show ip eigrp topology command
troubleshooting EIGRP routing tables, 197
verifying EIGRP configurations, 178-179
show ip eigrp traf?¬?c command, verifying
EIGRP con?¬?gurations, 180
show ip interface command
ACL configuration, 234
troubleshooting ACL, 240
verifying Frame Relay network
connectivity, 352
show ip interfaces command, ACL
con?¬?guration, 231, 235
show ip nat statistics command
field descriptions table, 264
NAT translation tables, 262-263
verifying NAT translations, 265-268
show ip nat translation command
NAT translation tables, 262
overloading inside global addresses, 260
static inside source address translation, 255
verifying NAT translations, 264-268
show ip ospf command, verifying OSPF
router ID, 148
show ip ospf interface command
troubleshooting ospf neighbor adjacencies,
162
verifying OSPF configurations, 149
show ip ospf neighbor command
troubleshooting ospf neighbor adjacencies,
161
verifying OSPF authentication, 159
verifying OSPF configuration, 150-152
show ip protocols command
troubleshooting EIGRP neighbor
relationships, 194
troubleshooting EIGRP routing tables, 197
troubleshooting OSPF routing tables, 165
verifying
EIGRP con?¬?gurations, 176
NAT translations, 269
show ip route command
IP routing table fields, 147-148
OSPF load balancing, 156
setup utility
381
verifying
EIGRP authentication, 190-191
Frame Relay network connectivity, 352
NAT translations, 268
OSPF authentication, 159
OSPF con?¬?guration, 146
show ip route eigrp command, verifying
EIGRP con?¬?guration, 176
show vlan brief command, 37-38
show vlan command, 36
show vlan id command, 36
show vlan name command, 36
show vtp status command, 32, 82
site-local IPv6 addresses, 275
site-to-site VPN (Virtual Private Networks),
299
spanning-tree vlan root primary command,
63
SPF (Shortest Path First) algorithms, 118,
143-144.
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