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Update 'IT/Configuring a Cisco IOS Switch.md'

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IT/Configuring a Cisco IOS Switch.md
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@ -20,7 +20,7 @@ configure terminal
Shorthand: `conf t` Shorthand: `conf t`
## Create/edit a vlan ## Create/edit a vlan
[docs](https://community.cisco.com/t5/networking-knowledge-base/how-to-configure-vlans-on-the-catalyst-switches/ta-p/3131780) [docs](https://community.cisco.com/t5/networking-knowledge-base/how-to-configure-vlans-on-the-catalyst-switches/ta-p/3131780)<br>
From configuration mode: From configuration mode:
``` ```
vlan [vlan-id] vlan [vlan-id]
@ -34,7 +34,7 @@ name [ascii name]
``` ```
where `[ascii name]` is the name you want to assign (EG: `Accounting`) where `[ascii name]` is the name you want to assign (EG: `Accounting`)
## Assign interfaces to a vlan ## Assign interfaces to a vlan
[docs](https://community.cisco.com/t5/networking-knowledge-base/how-to-configure-vlans-on-the-catalyst-switches/ta-p/3131780) [docs](https://community.cisco.com/t5/networking-knowledge-base/how-to-configure-vlans-on-the-catalyst-switches/ta-p/3131780)<br>
Enter interface config mode (from conf mode): Enter interface config mode (from conf mode):
Single port: Single port:
``` ```
@ -107,10 +107,17 @@ access-list [access-list-num] permit [network] [wildcard-mask]
`permit` can be substituted with `deny` to instead explictly deny a network. An example of a valid network could be `192.168.1.0`, and a wildcard mask for a `/24` would be `0.0.0.255`. Unless explictly stated, an access list will deny all other traffic. You can explicitly allow traffic by default for a numbered access list with `access-list [access-list-num] permit any`. `permit` can be substituted with `deny` to instead explictly deny a network. An example of a valid network could be `192.168.1.0`, and a wildcard mask for a `/24` would be `0.0.0.255`. Unless explictly stated, an access list will deny all other traffic. You can explicitly allow traffic by default for a numbered access list with `access-list [access-list-num] permit any`.
### Denying traffic from a particular address for a numbered access list ### Denying traffic from a particular address for a numbered access list
From the privileged exec terminal:
``` ```
access-list [access-list-num] deny [address] access-list [access-list-num] deny [address]
``` ```
### Applying a numbered access list to a particular interface
From `config-if` mode:
```
ip access-group [access-list-number]
```
# Viewing configs # Viewing configs
### Vlan config ### Vlan config
From the privileged exec terminal: From the privileged exec terminal:
@ -134,9 +141,11 @@ From privileged exec:
``` ```
show interface trunk show interface trunk
``` ```
## Helpful Resources ## Helpful Resources
Trying to figure out where in the command hierarchy you are? Trying to figure out where in the command hierarchy you are?
- https://www.cisco.com/c/en/us/td/docs/switches/lan/catalyst3560/software/release/12-2_46_se/command/reference/cr1/intro.pdf - https://www.cisco.com/c/en/us/td/docs/switches/lan/catalyst3560/software/release/12-2_46_se/command/reference/cr1/intro.pdf
Wondering more about the Cisco IOS CLI? Wondering more about the Cisco IOS CLI?
- https://www.cisco.com/c/en/us/td/docs/switches/lan/catalyst3560/software/release/12-2_46_se/command/reference/cr1/intro.pdf - https://www.cisco.com/c/en/us/td/docs/switches/lan/catalyst3560/software/release/12-2_46_se/command/reference/cr1/intro.pdf
- Wish you knew more about a command?
- https://www.cisco.com/c/en/us/td/docs/ios-xml/ios/fundamentals/configuration/xe-16-5/fundamentals-xe-16-5-book/cf-cli-basics.html#:~:text=Filtering%20CLI%20Output-,Getting%20Context%2DSensitive%20Help,-Entering%20a%20question