See route summarization
supernetting
382
SVC (Switched Virtual Circuits), Frame
Relay networks, 327
switches
Catalyst switches, troubleshooting VTP, 83
security, 76
802.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
troubleshooting, 76-77, 83
switchport access command, VLAN port
assignmnets, 37
switchport host command, switch security, 71
switchport mode command, 33-34
switchport mode trunk command, Ethernet
(802.1Q) trunk con?¬?guration, 34
switchport nonegotiate command, Ethernet
(802.1Q) trunk con?¬?guration, 34
switchport port-security mac-address
command, dynamic sticky learning, 72
T
Telnet, denial from subnets via
named extended ACL, 238
numbered extended ACL, 232-233
Teredo tunneling method, IPv6 integration,
284
terminal con?¬?guration mode (IOS Software),
4
time-based ACL (Access Control Lists), 217
benefits of, 218
configuration example, 218-219
topological (link-state) databases, 140
topologies
full-mesh topologies, Frame Relay DLCI,
329
partial-mesh topologies, Frame Relay
DLCI, 329
redundant switched-network topology
bene?¬?ts of, 45
equipment requirements, 42
interconnectivity, 40-42
oversubscription ratios, 42-43
problems with, 45-47
star topologies, Frame Relay DLCI, 329
topology databases, EIGRP, 173-174
topology tables, EIGRP, 172, 178-179
translation tables (NAT), troubleshooting,
262-263
transparent mode (VTP), 28, 36
triggered updates, distance vector route
maintenance, 111-115
troubleshooting
ACL, 239-243
EIGRP
MD5 authentication, 198-200
neighbor relationships, 192-195
routing tables, 195-198
Frame Relay networks
components of, 347
connectivity, 348-354
?¬‚owchart of, 347
loopback tests, 349
verifying DLCI con?¬?guration, 350
link-state routing protocols, 122
NAT
translation tables, 262-263
translation veri?¬?cations, 266-269
OSPF, 160
neighbor adjacencies, 161-163
plaintext passsword authentication,
165-166
routing tables, 164-165
port connectivity, 77
con?¬?guration issues, 79-80
hardware issues, 78
STP, 88
bridging loops, 86
logging events, 86
network diagrams, 85-86
root bridges, 87
temporarily disabling unnecessary
features, 87
verifying RSTP con?¬?guration, 87
switches, 76-77
VLAN
inter-VLAN connectivity, 81
IP subnets, 81
native VLAN mismatches, 80
trunk mode mismatches, 81
VTP, 82-85
SVC (Switched Virtual Circuits), Frame Relay networks
383
trunks
Ethernet (802.
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