Setting of layer 3 Network Management VLAN
Experimental topology:
Environmental planning:
VLAN 2 office
VLAN 3 IT
VLAN 4 admin is designed to remotely manage network devices
The configuration does not need to be written out
The difficulty here is that there is no corresponding port under VLAN4. How does interface VLAN4 get up?
Not operating in this topology
Take a new switch device and configure the VLAN above
When accessing terminal equipment, we will see vlan1 up
VLAN 2 interface is used to create VLAN 2 interfaces.
At this time, the show ip interface brief will appear VLAN 2 interface, but layer 3 is down.
How do you get vlan 2 up?
In fact, it is very simple, enable trunk port, and ensure that the port is up
interface f0/15
switch mode trunk
switch trunk encapsulation dot1q
switch trunk allowed vlan all
