Comandos modo de configuración global

          Cuando ingresamos al modo de configuración global tendremos el acceso a poder ejecutar comandos que afectarán al funcionamiento general del equipo. Usaremos de ejemplo un Router 1941 y un Switch 2960. Los comandos que podemos ejecutar en este modo son:


Router:

aaa	Authentication, Authorization and Accounting.
access-list	Add an access list entry
banner	Define a login banner
boot	Modify system boot parameters
cdp	Global CDP configuration subcommands
class-map	Configure Class Map
clock	Configure time-of-day clock
config-register	Define the configuration register
crypto	Encryption module
do	To run exec commands in config mode
dot11	IEEE 802.11 config commands
enable	Modify enable password parameters
end	Exit from configure mode
exit	Exit from configure mode
flow	Global Flow configuration subcommands
hostname	Set system's network name
interface	Select an interface to configure
ip	Global IP configuration subcommands
ipv6	Global IPv6 configuration commands
key	Key management
license	Configure license features
line	Configure a terminal line
logging	Modify message logging facilities
login	Enable secure login checking
mac-address-table	Configure the MAC address table
no	Negate a command or set its defaults
ntp	Configure NTP
parser	Configure parser
policy-map	Configure QoS Policy Map
port-channel	EtherChannel configuration
priority-list	Build a priority list
privilege	Command privilege parameters
queue-list	Build a custom queue list
radius-server	Modify Radius query parameters
router	Enable a routing process
secure	Secure image and configuration archival commands
security	Infra Security CLIs
service	Modify use of network based services
snmp-server	Modify SNMP engine parameters
spanning-tree	Spanning Tree Subsystem
tacacs-server	Modify TACACS query parameters
username	Establish User Name Authentication
vpdn	Virtual Private Dialup Network
vpdn-group	VPDN group configuration

Switch:

access-list	Add an access list entry
banner	Define a login banner
boot	Boot Commands
cdp	Global CDP configuration subcommands
clock	Configure time-of-day clock
crypto	Encryption module
do	To run exec commands in config mode
enable	Modify enable password parameters
end	Exit from configure mode
exit	Exit from configure mode
hostname	Set system's network name
interface	Select an interface to configure
ip	Global IP configuration subcommands
line	Configure a terminal line
logging	Modify message logging facilities
mac	MAC configuration
mac-address-table	Configure the MAC address table
mls	mls global commands
no	Negate a command or set its defaults
port-channel	EtherChannel configuration
privilege	Command privilege parameters
service	Modify use of network based services
snmp-server	Modify SNMP engine parameters
spanning-tree	Spanning Tree Subsystem
username	Establish User Name Authentication
vlan	Vlan commands
vtp	Configure global VTP state

Muchos de los comandos como podemos observar son utilizables en los dos equipos ya que los dos utilizan el IOS de Cisco, solamente algunos comandos son aplicados únicamente al Router y otros al Switch.