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minimal-setups/content/snippets/0260-administring-a-cisco-switch.md
Wolfgang Hottgenroth 7c9392d4d7
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1.4 KiB

Administring a Cisco Switch - Basics for the Homelab Usage

Connecting to the Switch

Only quite old ssh parameters are supported:

ssh -oKexAlgorithms=+diffie-hellman-group14-sha1 -oHostKeyAlgorithms=+ssh-rsa admin@192.168.2.1

Saving the Configuration

Never forget, otherwise after reboot changes are gone!

write memory

Configure VLANs

Allow VLAN-IDs greater then 1005:

configure terminal
vtp mode transparent
exit
configure terminal
vlan 1001
name vlan1001
exit
exit

The first exit leaves the interface, the second exit leaves the config session.

If the VLAN should be used for management purposes it needs an IP address:

configure terminal
vlan 2000
name vlan2000
ip address dhcp
exit
exit

Check your work:

show vlan

Configure Interfaces

To check your work use

show interfaces status

Access Ports

configure terminal
interface GigabitEthernet1/0/1
switchport mode access
switchport access vlan 1001
spanning-tree portfast
no shutdown
exit
exit

Trunk Ports

configure terminal
interface GigabitEthernet1/0/23
switchport mode trunk
switchport trunk allowed vlan 1012,3001,3002,3003,3004
switchport trunk native vlan 1012
no shutdown
exit
exit

allowed connects the port to the VLAN for tagged communication.

native makes the VLAN untagged on that port.