VLANs are in every network environment. Whether you’re configuring end-to-end or local VLANs you are segmenting the network into logical groups.
Prior to getting into the configuration of a VLAN, there are some best practices to be aware of:
- Avoid using VLAN 1. Put unused ports on an unused VLAN. I like to use VLAN 999.
- Separate voice and data VLANs.
- Place management on its own VLAN.
- Configure non-trunk links as access ports.
- Use SSH instead of Telnet.
To configure a VLAN, start in global config mode:
SW01#conf t
Create a VLAN with a VLAN ID number:
SW01(config)#vlan 10
Give the VLAN a name:
SW01(config-vlan)#name Users SW01(config-vlan)#exit
Assign a switchport to the new VLAN:
SW01(config)#interface g0/5 SW01(config-if)#switchport access vlan 10 SW01(config-if)#end
switchport access vlan 10 changes the default VLAN membership of this port to VLAN 10.
Verify the new VLAN configuration:
SW01#show vlan
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