Cisco InterVLAN Basic Configuration

Cisco Router Basic Configuration & Cheatsheet Set Hostname 

(config)# hostname

Set Default Gateway (Gateway of Last Resort) 

(config)# ip default-gateway

Set Domain Name 

(config)# ip domain-name

Enable Secret (Encrypted Password) 

(config)# enable secret

Disable IP Domain Lookup (Prevents translating typo’s) 

(config)# no ip domain-lookup

Configure WAN Interface DHCP 

(config)# interface

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(config-if)# ip address DHCP

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(config-if)# no shutdown

STATIC 

(config)# interface [ex: Gi0/0]



(config)# ip address

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(config)# no shutdown

Configure LAN Interface 

(config)# interface [ex: Gi0/1]



(config-if)# ip address [ex: 10.0.0.1 255.255.255.0]



(config-if)# no shutdown

Generate RSA Keys For SSH 

(config)# crypto key generate rsa [note: it is advised to use 2048 or higher]

Enable SSH With Username/Password Authentication 

(config)# line vty ? [note: [note: retrieve # of available lines]

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(config)# line vty [ex: 0 15]

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(config-line)# transport input ssh

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(config-line)# login local

Enable Console With Username/Password Authentication 

(config)# line con 0




Create Username/Password Username/Password With Admin Access 

(config)# username secret



(config)# username privilege 15

Verify SSH Is Enabled 

# sh ip ssh

Disable Console Logging 




(config-line)# logging synchronous

Create VLAN(s) As Necessary (Sub Interfaces) 

(config)# int [ex: Gi0/1]

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(config-if)# int . [ex: Gi0/1.10]

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(config-if)# encap dot1Q [ex: encap dot1Q 10]

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(config-if)# ip address [ex: 10.0.10.1 255.255.255.0]

Verify Route(s) 

# sh ip route

Cisco Switch Basic Configuration & Cheatsheet Set Hostname 

(config)# hostname

Set Default Gateway (Gateway of Last Resort) 

(config)# ip default-gateway

Set Domain Name 

(config)# ip domain-name

Enable Secret (Encrypted Password) 

(config)# enable secret

Disable IP Domain Lookup (Prevents translating typo’s) 

(config)# no ip domain-lookup

Set Switch Management IP 

(config)# int vlan 1



(config-if)# ip address



(config-if)# no shut

Generate RSA Keys For SSH 

(config)# crypto key generate rsa [note: it is advised to use 2048 or higher]

Enable SSH With Username/Password Authentication 

(config)# line vty ? [note: [note: retrieve # of available lines]



(config)# line vty [ex: 0 15]



(config-line)# transport input ssh




Enable Console With Username/Password Authentication 





Create Username/Password With Admin Access 

(config)# username secret



(config)# username privilege 15

Verify SSH Is Enabled 

# sh ip ssh

Disable Console Logging 




(config-line)# logging synchronous

Create and Name VLAN(s) 

(config)# vlan <#>

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(config-vlan)# name

Verify VLAN(s) Were Created and Named 

# sh vlan

Add Ports To VLAN(s) 

(config)# int

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(config-if)# switchport mode access

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(config-if)# switchport mode access vlan <#>

Set VLAN(s) IP Address 

(config)# int vlan <#>

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(config)# ip address [ex: 10.0.10.2 255.255.255.0]

Configure Trunk To Router 

(config)# int



(config-if)# switchport trunk allowed vlan VLAN#,VLAN#,VLAN# [note: range can also be used]

Cisco InterVLAN Basic Configuration

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