128 lines
3.2 KiB
Markdown
128 lines
3.2 KiB
Markdown
## On Boot
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Press **Enter** to begin
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If greeted with a prompt asking about *Initial Configuration Dialogue*, type `n` and hit enter.
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- If you decide to make use of Initial Configuration, refer to [Cisco Docs](https://www.cisco.com/c/en/us/td/docs/ios-xml/ios/fundamentals/configuration/15mt/fundamentals-15-mt-book/cf-setup.html)
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You should be greeted with a prompt that has a `>` character at the end, indicating you are in user EXEC mode. This is limited and not used for configuration.
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Enable privileged EXEC mode to get access to all commands and configurations:
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```
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enable
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```
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Shorthand: `ena`
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Enter configuration mode, configuring from the terminal (also possible to configure from memory or the network):
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```
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configure terminal
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```
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Shorthand: `conf t`
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## Create/edit a vlan
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[docs](https://community.cisco.com/t5/networking-knowledge-base/how-to-configure-vlans-on-the-catalyst-switches/ta-p/3131780)
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From configuration mode:
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```
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vlan [vlan-id]
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```
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where `[vlan-id]` is the vlan number you want to generate, this will put you into config-vlan mode
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## Assign a vlan a name
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From `config-vlan` mode:
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```
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name [ascii name]
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```
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where `[ascii name]` is the name you want to assign (EG: `Accounting`)
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## Assign interfaces to a vlan
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[docs](https://community.cisco.com/t5/networking-knowledge-base/how-to-configure-vlans-on-the-catalyst-switches/ta-p/3131780)
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Enter interface config mode (from conf mode):
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Single port:
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```
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interface [interface-to-configure]
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```
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shorthand: `int [interface-to-configure]`
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Range [docs](https://www.cisco.com/c/en/us/td/docs/ios/interface/configuration/guide/ir_ifrange.html):
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```
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interface range fa0/st - nd
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```
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where `fa` is the speed, `st` the starting port, and `nd` the end port
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From `config-if` mode:
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Enter port mode configuration:
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```
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switchport mode access
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```
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Link the interface(s) to a vlan:
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```
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switchport access vlan [vlan-id]
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```
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interfaces are referenced in the format of `sp0/nm` where speed and port number are specified (eg: fa0)
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## Configuring trunk ports
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From the `config` mode, select an interface to configure as trunk mode:
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```
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interface [interface-id (sp0/nm syntaax)]
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```
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shorthand: `int fa0/nm`
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Set the mode of the selected interface to trunk mode:
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```
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switchport mode trunk
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```
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Type `end` or `exit` to leave `config-if` mode
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## Limiting trunk traffic to a specific vlan
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From `config` mode:
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```
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interface [interface-id]
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```
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shorthand: `int fa0/24`
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Change trunk config:
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```
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switchport trunk allow vlan [vlan-id]
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```
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## Force vlans to be online:
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From `configure` mode:
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```
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vlan [vlan-id]
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```
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- [ ]
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```
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no shutdown
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```
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# Viewing configs
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### Vlan config
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From the privileged exec terminal:
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```
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show vlan
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```
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### See what IP address is assigned to a vlan
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From privileged exec mode:
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```
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show run int vlan [vlan-id]
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```
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See what mode an interface is in:
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```
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show int [interface] switchport
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```
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### interface trunk config
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From privileged exec:
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```
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show interface trunk
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```
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## Helpful Resources
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Trying to figure out where in the command hierarchy you are?
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- https://www.cisco.com/c/en/us/td/docs/switches/lan/catalyst3560/software/release/12-2_46_se/command/reference/cr1/intro.pdf
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Wondering more about the Cisco IOS CLI?
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- https://www.cisco.com/c/en/us/td/docs/switches/lan/catalyst3560/software/release/12-2_46_se/command/reference/cr1/intro.pdf
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