Sub-configuration modes (Inside global config)

1. Interface configuration mode

Prompt:

Router(config-if)#

Enter with:

interface gigabitEthernet0/0

Used for:

• IP address config
• Enable/disable interface
• Speed/duplex

• VLAN access/trunk settings

• Line configuration mode

Prompt:

Router(config-line)#

Enter with:

line console 0
line vty 0 4

Used for:

• Console, SSH, Telnet security

• Router configuration mode (Routing protocols)

Prompt:

Router(config-router)#

Enter with:

router rip
router ospf 1
router bgp 65000

1. VLAN configuration mode (Switch)

Prompt:

Switch(config-vlan)#

Enter with:

vlan 10

1. Access control list mode

Prompt:

Router(config-std-nacl)#
Router(config-ext-nacl)#

1. Policy / Class map mode (QoS)

Prompt:

Router(config-pmap)#

1. ROM monitor mode (Recovery mode)

Prompt:

rommon>

Used for:

• Password recovery
• Boot troubleshooting