Index
Symbols
| (pipe) character, 42
A
ABR (Area Border Router), 142
access. See also security
terminal, restricting, 239-240
virtual terminal, restricting, 228
ACLs (access control lists), 40
comments, 228
configuring, 229
formatting, 221
interfaces, 222
IPv6, 230
keywords, 220
established, 224
numbers, 219
removing, 222
verifying, 222
virtual terminal access, restricting, 228
wildcard masks, 220
AD (administrative distance), 113-114
addresses
helper, DHCP, 195
IP, configuring, 45
IPv6, assigning to addresses, 104
loopback, BGP, 178
MAC, configuring tables, 47
NAT, 205
Dynamic NAT, 205
RFC 1918, 205
troubleshooting, 210
verifying, 209
static MAC, configuring, 214
sticky MAC, configuring, 215
administrative distance. See AD
apply command, 56
applying
extended ACLs to interfaces, 223
interfaces to ACLs, 222
time stamps, 294
VLANs
configuration mode, 52
database mode, 52
archive config command, 274
Area Border Router. See ABR
areas, OSPF
routers, 142
wildcard masks, 140
arguments, permit/deny, 220
arp command, 296
ASBR (Autonomous System Boundary Router), 142
assigning VLANs to ports, 53
authentication
serial lines, configuring PPP, 165
auto-cost reference bandwidth command, 145
auto-QoS, 187
auto-summarization, 129
auto-summary command, 126, 129
Autonomous System Boundary Router. See ASBR
autorecover error-disabled ports, 216
B
backbone routers, 142
backing up
IOS software, TFTP servers, 244
licenses, 289
backup designated routers. See BDRs
bandwidth command, 132
banners
login, formatting, 105
MOTD, formatting, 104
baud rates, configuring, 253
BDRs (backup designated routers), elections, 144
loopback addresses, 178
binary numbers
Class B addresses, subnetting, 5-8
Class C addresses, subnetting, 2-5
converting, 2
bits
configuration registers, 252
determining number of, 16
boot fields, configuration registers, 252
boot system commands, 241
Border Gateway Protocol. See BGP
BPDU Guard command, 80
C
cables. See also connecting
selecting, 35
serial, types of, 33
USB, connecting, 31
CDP (Cisco Discovery Protocol), 53, 259
configuring, 259
design tips, 260
verifying, 260
channel-group command, 91
CHAP authentication examples, 166-167
Cisco Discovery Protocol. See CDP
Cisco IOS File System. See IFS
Cisco IP Phones, DHCP servers, 194
Cisco License Manager, 287
Cisco Smart Software Manager, 288
class of service. See CoS
clear ip bgp * command, 181-182
clear spanning-tree detected-protocols command, 81
clearing
interface counters, 293
routing tables, 292
CLIs (command-line interfaces). See also interfaces
console error messages, 38
help, 38
keyboard help, 40
pipe (|) character, 42
shortcuts for entering commands, 37
Tab key to complete commands, 37
clients, DHCP, 195
clock rate command, 103
clocks
time zones, configuring, 105
command-line interface. See CLIs
commands
apply, 56
archive config, 274
arp, 296
auto-cost reference bandwidth, 145
bandwidth, 132
boot system, 241
channel-group, 91
clear spanning-tree detected-protocols, 81
clock rate, 103
configure terminal, 108
copy, 242
copy running-config startup-config, 56, 274
default-information originate, 146
default-information originate always, 146
disable, 39
do, 108
enable, 39
enable secret password, 99
encapsulation hdlc, 163
encapsulation isl, 66
encapsulation ppp, 164
entering, 37
EXEC, 108
exec-timeout, 106
help, 43
history, 41
IFS, 242
common URL prefixes, 242
image filenames, 243
viewing, 242
ip default-network, 292
ip forward-helper udp x, 195
ip helper address, 195
ip http server, 295
ip ospf process ID area area number, 142
ip route, 111
ip subnet zero, 15
ip summary-address, 129
logging synchronous, 106
logout, 39
mdix auto, 46
mls qos trust extend, 187
mls qos trust interface configuration, 186
netstat, 296
network, 126
network 172.16.1.0 0.0.0.255 command, 126
network area, 142
no banner login, 105
no banner motd, 104
no ip address, 169
no ip domain-lookup, 105
no ip forward-protocol udp x, 195
no ipv6 address, 169
no snmp-server, 270
operating system IP verification, 295
port channel, 91
range, 53
remark, 228
router ospf x, 142
show controllers, 294
show interface, 293
show queueing interface, 187
show running-config, 98
snmp-server, 271
spanning-tree vlan x root primary, 78
spanning-tree vlan x root secondary, 78
STP, 79
BPDU Guard, 80
PortFast, 79
switchport mode access, 53
switchport trunk encapsulation negotiate, 63
switchport trunk pruning vlan, 64
terminal, 41
tftpdnld, 248
verifying, 44
write-memory, 274
comments, ACLs, 228
common URL prefixes, 242
completing commands (with Tab keys), 37
compression, configuring serial lines, 164
configuration mode (VLANs), applying, 52
configuration registers, 251-253
configure terminal command, 108
ACLs, 229
loopback addresses, 178
CDP, 259
connecting, 32
console terminal baud rates, 253
default gateways, 45
DHCP
Cisco IP Phones, 194
Ethernets, 195
helper addresses, 195
on IOS routers, 193
troubleshooting, 194
verifying, 194
Dynamic NAT, 205
duplex operations, 47
auto-summarization, 129
manual summarization, 129
maximum paths, 130
modifying metric weights, 126
passive interfaces, 130
router IDs, 128
timers, 129
troubleshooting, 134
variance, 131
EIGRP (IPv6), 127
modifying metric weights, 127
summary addresses, 130
troubleshooting, 134
EtherChannel, 90
Layer 2, 91
Layer 3, 91
verifying, 92
host names, 45
HSRP
debugging, 202
default settings, 200
on routers, 200
verifying, 201
interface descriptions, 46
IP addresses, 45
IPv4, static routes, 111
LLDP, 261
NetFlow, 276
operation speed, 47
OSPF, 140
auto-cost reference bandwidth command, 145
default routes, 145
DR/BDR elections, 144
loopback interfaces, 143
modifying cost metrics, 144
passive interfaces, 144
route summarization, 146
router IDs, 143
routers, 142
timers, 145
troubleshooting, 149
wildcard masks, 140
path cost, 78
port priority, 77
PPP, 163
HDLC encapsulation, 163
troubleshooting, 166
verifying, 166
remote telnet connections, 263-264
restoring, 244
routers, 97
assigning IPv6 addresses to interfaces, 104
default routes, 114
encrypting passwords, 99
entering global configuration mode, 98
erasing, 107
Fast Ethernet interfaces, 103
Gigabit Ethernet interfaces, 103
modes, 98
naming, 98
navigating interfaces, 102
passwords, 98
saving, 106
serial interfaces, 103
SCP, 249
static routes
static VLANs, 51
STP, 80
enabling Rapid PVST+, 81
extended system ID, 81
troubleshooting, 82
STP timers, 78
switches
autorecover error-disabled ports, 216
passwords, 213
priority, 78
resetting, 44
static MAC addresses, 214
sticky MAC addresses, 215
syslog, 274
formatting messages, 275
time stamps, 283
time zones, 105
VLANs
erasing, 56
saving, 56
with trust, 54
without trust, 54
voice, 53
cables
selecting, 35
configuring, 32
eBGP, verifying, 180
LAN devices, 33
remote telnet connections, configuring, 263-264
serial cable types, 33
terminal settings, 32
USB cables, 31
console error messages, 38
console line speed, modifying, 253
console terminal baud rates, configuring, 253
converting
decimals to binaries, 2
copy command, 242
copy running-config startup-config command, 56, 274
CoS (class of service), 53
costs
metrics, modifying, 144
paths, configuring, 78
counters, clearing interfaces, 293
D
database mode (VLANs), applying, 52
data traffic, configuring trust, 54
debugging HSRP, 202
decimal numbers, converting, 2
default gateways, configuring, 45
default-information originate always command, 146
default-information originate command, 146
default routes
configuring, 114
IPv6, 118
OSPF, 145
default settings, HSRP, 200
deleting ACLs, 222
deny arguments, 220
design tips, CDP, 260
designated routers, See DRs
devices
common URL prefixes, 242
LAN, connecting, 33
monitoring, 269
implementing logging, 274
NetFlow, 276
router clock settings, 279-282
time stamps, 283
verifying NetFlow, 277
remote telnet connections, configuring, 264
security, 235
configuring passwords, 236-237
disabling unneeded services, 240
formatting SSH, 238
IOS routers, 235
policies, 236
verifying SSH, 239
DHCP (Dynamic Host Configuration Protocol), 193
Cisco IP Phones, 194
configuring, 193
Ethernets, 195
helper addresses, 195
troubleshooting, 194
verifying, 194
digital subscriber line. See DSL
disable command, 39
disabling unneeded services, 240
DNAT (Dynamic NAT), configuring, 205
do command, 108
Doyle, Jeff, 25
DRs (designated routers), elections, 144
DSL (digital subscriber line), PPPoE, 170-175
DTP (Dynamic Trunking Protocol), 61
duplex operations, configuring, 47
Dynamic Host Configuration Protocol. See DHCP
Dynamic NAT. See DNAT
Dynamic Trunking Protocol. See DTP
E
eBGP (external BGP) example, 178-180
EIA/TIA standards, 35
EIGRP (Enhanced Interior Gateway Routing Protocol), 40, 125
IPv4
auto-summarization, 129
manual summarization, 129
maximum paths, 130
modifying metric weights, 126
passive interfaces, 130
router IDs, 128
timers, 129
troubleshooting, 134
variance, 131
configuring, 127
modifying metric weights, 127
summary addresses, 130
troubleshooting, 134
enable command, 39
enable secret password command, 99
enabling
Rapid PVST+, 81
STP, 76
encapsulation
HDLC, 163
encapsulation hdlc command, 163
encapsulation isl command, 66
encapsulation ppp command, 164
encryption, passwords, 99, 237-238
Enhanced Interior Gateway Routing Protocol. See EIGRP
entering
commands, 37
global configuration mode, 98
equal-cost load balancing, 130
erasing VLAN configurations, 56
errors, console error messages, 38
established keyword, 224
EtherChannel, 89
Ethernets, DHCP, 195
evaluation licenses, installing, 289
EXEC commands, 108
exec-timeout command, 106
extended ACLs, creating, 222-223
extended ping commands, 266-267
extended system ID, 81
external BGP. See eBGP
external route summarization, 146
F
Fast Ethernets, configuring interfaces, 103
FHRP (First Hop Redundancy Protocol), 199
fields, boot, 252
filenames, images, 243
First Hop Redundancy Protocol. See FHRP
flapping (routes), 30
floating static routes, 113-114, 117
formatting. See also configuring
ACLs, 229
comments, 228
restricting virtual terminal access, 228
banners
login, 105
MOTD, 104
messages, syslog, 275
standard ACLs, 221
G
gateway of last resort, selecting, 292
generic routing encapsulation. See GRE
Gigabit Ethernets, configuring interfaces, 103
global configuration mode, entering, 98
Graziani, Rick, 119
GRE (generic routing encapsulation), 183-184
H
H bits, determining number of, 16
hardening (devices), 235
IOS routers, 235
passwords
security policies, 236
SSH
formatting, 238
verifying, 239
unneeded services, disabling, 240
HDLC (High-Level Data Link Control), encapsulation, 163
help commands, 43
helper addresses, DHCP, 195
high availability, video/voice, 185
High-Level Data Link Control. See HDLC
history commands, 41
hosts, configuring names, 45
Hot Standby Router Protocol. See HSRP
HSRP (Hot Standby Router Protocol), 199
debugging, 202
default settings, 200
routers, configuring, 200
verifying, 201
I
ICMP (Internet Control Message Protocol), 265
IEEE Standard 802.1Q, 62
IFS (Cisco IOS File System), 242
common URL prefixes, 242
image filenames, 243
viewing, 242
IGRP (Interior Gateway Routing Protocol), 126
images, filenames, 243
implementing
logging, 274
Integrated Services Router (ISR) G2 platform, 287
interarea route summarization, 146
ACLs, applying, 222
console line speed, modifying, 253
counters, clearing, 293
descriptions, configuring, 46
EIGRP
IPv4, 130
IPv6, 127
EtherChannel, 89
extended ACLs, applying to, 223
Fast Ethernets, configuring, 103
Gigabit Ethernets, configuring, 103
IFS, 242
common URL prefixes, 242
image filenames, 243
viewing, 242
IPv6 addresses, assigning, 104
loopback, 143
navigating, 102
OSPF, 144
serial, configuring, 103
tracking, 202
Interior Gateway Routing Protocol. See IGRP
Internet Control Message Protocol. See ICMP
Inter-Switch Link. See ISL
inter-VLAN communication
optimizing, 66
IOS
licenses
backing up, 289
Cisco License Manager, 287
Cisco Smart Software Manager, 288
later than 15.0, 287
uninstalling, 289
verifying, 287
tools
ICMP, 265
remote telnet connections, 263-264
traceroute command, 268
verifying telnet, 264
IOS File System. See IFS
IOS routers, security, 235-236
IOS software
restoring, 245
TFTP severs, backing up, 244
tftpdnld command, restoring, 248
upgrading, 245
IP addresses
configuring, 45
private, 205
ip default-network command, 292
ip forward-helper udp x command, 195
ip helper address command, 195
ip http server command, 295
ip ospf process ID area area number command, 142
IP Phones (Cisco), DHCP servers, 194
ip route command, 111
ip subnet zero command, 15
ip summary-address command, 129
IPv4 (Internet Protocol version 4)
default routes, configuring, 114
EIGRP, 125
auto-summarization, 129
manual summarization, 129
maximum paths, 130
modifying metric weights, 126
passive interfaces, 130
router IDs, 128
timers, 129
troubleshooting, 134
variance, 131
static routes
configuring, 111
verifying, 114
IPv6 (Internet Protocol version 6)
ACLs
configuring, 230
verifying, 230
addresses, assigning to interfaces, 104
EIGRP
configuring, 127
modifying metric weights, 127
summary addresses, 130
troubleshooting, 134
ISL (Inter-Switch Link), 62
K
keyboards, troubleshooting, 40
keywords
ACLs
established, 224
formatting, 221
managing, 220
permanent, 112
Klymchuk, Chad, 12
L
LAN devices, connecting, 33
Layer 2
CDP, 259
configuring, 259
design tips, 260
troubleshooting, 260
verifying, 260
EtherChannel, configuring, 90-91
EtherChannel, configuring, 91
testing, 293
Layer 7, testing, 293
levels, formatting syslog, 275-276
licenses, IOS
backing up, 289
Cisco License Manager, 287
Cisco Smart Software Manager, 288
later than 15.0, 287
uninstalling, 289
verifying, 287
lien speed, modifying consoles, 253
Link Layer Discovery Protocol. See LLDP
Link Quality Monitoring. See LQM
LLDP (Link Layer Discovery Protocol), 261
configuring, 261
troubleshooting, 262
verifying, 262
local addresses, 10
local hostnames, mapping, 105
logging, implementing, 274
logging synchronous command, 106
login, formatting banners, 105
logout command, 39
lookup, recursive, 112
loopback addresses, BGP, 178
loopback interfaces, 143
LQM (Link Quality Monitoring), 164
M
MAC addresses
static, configuring, 214
sticky, configuring, 215
tables, configuring, 47
managing
ACLs
applying to interfaces, 222
comments, 228
configuring, 229
established keyword, 224
formatting, 221
keywords, 220
numbers, 219
removing, 222
restricting virtual terminal access, 228
verifying, 222
wildcard masks, 220
Cisco Smart Software Manager, 288
licenses, 287
backing up, 289
uninstalling, 289
manual summarization, EIGRP, 129
mapping local hostnames, 105
mdix auto command, 46
message-of-the-day. See MOTD
messages
console errors, 38
redirect, 265
syslog
formatting, 275
timers, HSRP, 201
metric weights, modifying, 126-127
MISTP (Multiple Instance Spanning Tree Protocol), 76
MLPPP (Multilink Point-to-Point Protocol)
troubleshooting, 170
verifying, 170
mls qos trust extend command, 187
mls qos trust interface configuration command, 186
modes
routers, 98
configuration mode, 52
database mode, 52
modifying
cost metrics, OSPF, 144
monitoring
devices, 269
configuring NetFlow, 276
implementing logging, 274
router clock settings, 279-282
time stamps, 283
verifying NetFlow, 277
MOTD (message-of-the-day) banners, formatting, 104
MST (Multiple Spanning Tree), 76
MSTP, 80
multiarea OSPF
routers, 142
multilayer switches, applying SVI, 65-66
Multilink Point-to-Point Protocol. See MLPPP
Multiple Instance Spanning Tree Protocol. See MISTP
Multiple Spanning Tree. See MST
N
names
hosts, configuring, 45
routers, 98
NAT (Network Address Translation), 40, 205
DNAT, configuring, 205
PAT
troubleshooting, 210
verifying, 209
RFC 1918, 205
Static NAT, configuring, 208-209
troubleshooting, 210
verifying, 209
navigating interfaces, 102
NetFlow
configuring, 276
verifying, 277
netstat command, 296
Network Address Translation. See NAT
network area command, 142
network commands, 126
Network Time Protocol. See NTP
networks, selecting, 18
no banner login command, 105
no banner motd command, 104
no ip address command, 169
no ip domain-lookup command, 105
no ip forward-protocol udp x command, 195
no ipv6 address command, 169
no snmp-server command, 270
verifying, 278
numbers. See also binaries; decimal numbers
ACLs, 219
converting, 2
sequence, optimizing, 227
O
Open Shortest Path First Protocol. See OSPF
operating system IP verification commands, 295
operation speed, configuring, 47
optimizing
ACLs, configuring, 229
inter-VLAN communication, 66-74
sequence numbers, 227
OSPF (Open Shortest Path First Protocol), 40, 140
auto-cost reference bandwidth command, 145
configuring, 140
cost metrics
modifying, 144
default routes, 145
DR/BDR elections, 144
loopback interfaces, 143
OSPFv2/OSPFv3
troubleshooting, 149
passive interfaces, 144
route summarization, 146
router IDs, 143
timers, 145
wildcard masks, 140
P
passive interfaces, OSPF, 144
passwords
encryption, configuring, 99
recovering, 251
configuration registers, 251-253
routers, 254
switches, configuring, 213
PAT (Port Address Translation)
troubleshooting, 210
verifying, 209
paths
cost, configuring, 78
EIGRP, IPv4, 130
permanent keyword, 112
permanent licenses, installing, 288
permit arguments, 220
Per-VLAN Spanning Tree. See PVST
pipe (|) character, 42
Point-to-Point Protocol. See PPP
Point-to-Point Protocol over Ethernet. See PPPoE
policies, router security, 236
Port Address Translation. See PAT
port channel command, 91
PortFast command, 79
ports
priority, configuring, 77
switches
autorecover error-disabled ports, 216
passwords, 213
static MAC addresses, 214
sticky MAC addresses, 215
VLANs, assigning, 53
PPP (Point-to-Point Protocol), 163
HDLC encapsulation, 163
troubleshooting, 166
verifying, 166
PPPoE (Point-to-Point Protocol over Ethernet), 170-175
preempts, HSRP, 201
prefixes, URLs, 242
priority
ports, configuring, 77
switches, configuring, 78
private IP addresses, 205
protocols
ACLs, managing, 219
BGP
loopback addresses, 178
CDP, 259
configuring, 259
design tips, 260
verifying, 260
DHCP, 193
Cisco IP Phones, 194
configuring, 193
Ethernets, 195
helper addresses, 195
troubleshooting, 194
verifying, 194
DTP, 61
EIGRP, 125
EIGRP (IPv4)
auto-summarization, 129
manual summarization, 129
maximum paths, 130
modifying metric weights, 126
passive interfaces, 130
router IDs, 128
timers, 129
troubleshooting, 134
variance, 131
EIGRP (IPv6)
configuring, 127
modifying metric weights, 127
summary addresses, 130
troubleshooting, 134
FHRP, 199
HSRP, 199
configuring, 200
debugging, 202
default settings, 200
verifying, 201
ICMP, 265
IGRP, 126
LLDP, 261
configuring, 261
troubleshooting, 262
verifying, 262
MISTP, 76
NTP
verifying, 278
PPP, 163
HDLC encapsulation, 163
troubleshooting, 166
verifying, 166
RSTP, 75
verifying, 273
STP, 75
configuring, 80
enabling, 76
enabling Rapid PVST+, 81
extended system ID, 81
path cost configuration, 78
port priority configuration, 77
root switch configuration, 76-77
switch priority configuration, 78
timer configuration, 78
troubleshooting, 82
verifying, 79
PVST (Per-VLAN Spanning Tree), 80-87
Q
auto-QoS, 187
high availability, 185
verifying, 187
quad-zero routes, 114
quality of service. See QoS
R
range command, 53
Rapid Spanning Tree Protocol. See RSTP
recovering
passwords, 251
configuration registers, 251-253
routers, 254
recursive lookups, 112
redirect messages, ICMP, 265
reducing routes, 25
requirements, 30
route flapping, 30
remark command, 228
remote addresses, 10
remote telnet connections, configuring, 263-264
requirements, route summarization, 30
resetting switches, configuring, 44
restoring
configurations, 244
IOS software, 245
tftpdnld command, 248
restricting
auto-QoS, 187
RFC 1918, 205
RIPng (RIP Next Generation)
ROM Monitor mode
console line speed, modifying, 253
restoring IOS software, 248
tftpdnld command, 248
Xmodem, restoring IOS software, 246
root switches, configuring, 76-77
router ospf x command, 142
routers
backbone, 142
configuring, 97
erasing, 107
saving, 106
connecting
configuring, 32
types of serial cables, 33
default routes
configuring, 114
EtherChannel, 89
verifying, 92
HSRP
configuring, 200
debugging, 202
default settings, 200
verifying, 201
IDs
EIGRP, 128
OSPF, 143
interfaces
assigning IPv6 addresses, 104
configuring Fast Ethernets, 103
configuring Gigabit Ethernets, 103
configuring serial, 103
navigating, 102
IOS
configuring DHCP servers, 193
policies, 236
security, 235
modes
configuring, 98
entering global configuration mode, 98
naming, 98
OSPF multiarea, 142
passwords
configuring, 98
encrypting, 99
recovering, 254
preempts, 201
USB cables, connecting, 31
default
configuring, 114
OSPF, 145
flapping, 30
gateway of last resort, selecting, 292
quad-zero, 114
static
configuring IPv4, 111
permanent keyword, 112
recursive lookups, 112
verifying, 114
summarization, 25
OSPF, 146
requirements, 30
route flapping, 30
routing
tables
clearing, 292
viewing, 291
updates, 292
RSTP (Rapid Spanning Tree Protocol), 75
S
saving
routers
configuring, 106
erasing, 107
VLANs, configuring, 56
secondary root switches, configuring, 77
Secure Copy. See SCP
Secure Shell. See SSH
devices, 235
configuring passwords, 236-237
disabling unneeded services, 240
formatting SSH, 238
IOS routers, 235
policies, 236
verifying SSH, 239
switches
autorecover error-disabled ports, 216
passwords, 213
static MAC addresses, 214
sticky MAC addresses, 215
selecting
cables, 35
gateway of last resort, 292
networks, 18
subnets, 17
sequence numbers
optimizing, 227
serial cables, types, 33
serial interfaces, configuring, 103
serial lines, PPP
troubleshooting, 166
verifying, 166
servers
DHCP
Cisco IP phones, 194
configuring on IOS routers, 193
Ethernets, 195
helper addresses, 195
troubleshooting, 194
verifying, 194
EtherChannel, 89
verifying, 92
services, disabling, 240
settings. See configuring
shortcuts
entering commands, 37
show controllers command, 294
show interface command, 293
show queueing interface command, 187
show running-config command, 98
Simple Network Management Protocol. See SNMP
single-area OSPF examples, 150-153
SNMP (Simple Network Management Protocol), 269-271
verifying, 273
snmp-server command, 271
Spanning Tree Protocol. See STP
spanning-tree vlan x root primary command, 78
spanning-tree vlan x root secondary command, 78
configuring, 238
verifying, 239
standard ACLs, formatting, 221
static MAC addresses, configuring, 214
Static NAT, configuring, 208-209
static routes
IPv4, configuring, 111
permanent keyword, 112
recursive lookups, 112
verifying, 114
static VLANs, configuring, 51
sticky MAC addresses, configuring, 215
STP (Spanning Tree Protocol), 75
BPDU Guard, 80
PortFast, 79
configuring, 80
enabling Rapid PVST+, 81
extended system ID, 81
path cost, configuring, 78
port priority, configuring, 77
root switches, configuring, 76-77
switch priority, configuring, 78
timers, configuring, 78
troubleshooting, 82
verifying, 79
subnetting
numbers, converting, 2
selecting, 17
VLSM, 15
ip subnet zero command, 15
summarization (route), 25
OSPF, 146
requirements, 30
route flapping, 30
summary addresses, configuring EIGRP (IPv6), 130
supernetting, 25
requirements, 30
route flapping, 30
SVI (switch virtual interface), 65-66
switch virtual interface. See SVI
switches
6500 series
configuring auto-QoS, 190
verifying auto-QoS, 191
configuring, resetting, 44
connecting, 32
EtherChannel, 89
verifying, 92
passwords
encrypting, 99
priority, configuring, 78
security
autorecover error-disabled ports, 216
passwords, 213
static MAC addresses, 214
sticky MAC addresses, 215
spanning trees, configuring, 80
USB cables, connecting, 31
switchport mode access command, 53
switchport trunk encapsulation negotiate command, 63
switchport trunk pruning vlan command, 64
syslog, configuring, 274
formatting messages, 275
T
tab keys, 37
tables
MAC addresses, configuring, 47
routing
clearing, 292
viewing, 291
telnet, verifying, 264
terminal access, restricting, 239-240
terminal commands, 41
terminal settings, connecting, 32
testing
Layer 3, 293
Layer 7, 293
TFTP servers
configurations, backing up, 244
configurations, restoring, 244
IOS software
backing up, 244
restoring, 245
upgrading, 245
tftpdnld command, 248
time zones, configuring, 105, 281
timers
EIGRP, 129
HSRP, 201
OSPF, 145
STP, 78
tools, IOS
ICMP, 265
remote telnet connections, 263-264
traceroute command, 268
verifying telnet, 264
tracking interfaces, 202
arp command, 296
debug command, 294
DHCP, 194
EIGRP
IPv4, 134
IPv6, 134
gateway of last resort, 292
interface counters, clearing, 293
ip http server command, 295
IPv6 static routes, 118
keyboards, 40
last routing updates, 292
LLDP, 262
MLPPP, 170
NAT, 210
netstat command, 296
operating system IP verification commands, 295
OSI Layer 3 testing, 293
OSI Layer 7 testing, 293
OSPFv2/OSPFv3, 149
PAT, 210
PPP, 166
routing tables
clearing, 292
viewing, 291
SCP, 249
show controllers command, 294
show interface command, 293
STP, 82
time stamps, 294
traceroute command, 294
trust, configuring, 54
types
of serial cables, 33
U
unequal-cost load balancing, 131
uninstalling licenses, 289
Universal Service Order Codes (USOC) standards, 35
unneeded services, disabling, 240
updating routing, 292
upgrading IOS software, 245
URLs (uniform resource locators), prefixes, 242
USB cables, connecting, 31
V
variable-length subnet masking. See VLSM
variance, EIGRP, 131
verifying
ACLs, 222
auto recover error-disabled ports, 216
CDP, 260
commands, 44
DHCP, 194
eBGP connections, 180
EIGRP
EtherChannel, 92
GRE tunnels, 184
HSRP, 201
IPv6 routes, 118
licenses, 287
LLDP, 262
MLPPP, 170
NAT, 209
NetFlow, 277
NTP, 278
PAT, 209
PPP, 166
QoS, 187
SCP, 249
SNMP, 273
SSH, 239
static routes, 114
STP, 79
switch port security, 215
telnet, 264
VLANs, 55
VTP, 64
versions, licenses
backing up, 289
Cisco License Manager, 287
Cisco Smart Software Manager, 288
later than 15.0, 287
uninstalling, 289
verifying, 287
video, high availability, 185
viewing
IFS, 242
routing tables, 291
virtual terminal access, restricting, 228
VLANs (virtual LANs)
configuration mode, applying, 52
configuring
erasing, 56
saving, 56
database modes, applying, 52
encapsulation types, configuring, 62-63
inter-VLAN communication
optimizing, 66
ports, assigning, 53
static, configuring, 51
verifying, 55
VLAN Trunking Protocol. See VTP
VLSM (variable-length subnet masking), 15
ip subnet zero command, 15
high availability, 185
VLANs, configuring, 53
VTP (VLAN Trunking Protocol), 63-64
W
write-memory command, 274