! SWITCH CORE, puertos de ejemplo tipo Ethernet0/x. Confirmar interfaces reales.
configure terminal
hostname SW-CORE
vlan 10
 name RECTORIA
vlan 20
 name DOCENTES
vlan 30
 name DECANATURA
vlan 40
 name ALUMNOS
exit
interface Ethernet0/0
 description TRUNK_A_R1-CENTRAL
 switchport mode trunk
 switchport trunk allowed vlan 10,20,30,40
 no shutdown
exit
interface Ethernet0/1
 description TRUNK_A_SW-ACCESO-1
 switchport mode trunk
 switchport trunk allowed vlan 10,20,30,40
 no shutdown
exit
interface Ethernet0/2
 description TRUNK_A_SW-ACCESO-2
 switchport mode trunk
 switchport trunk allowed vlan 10,20,30,40
 no shutdown
exit
interface Ethernet0/3
 description SERVIDOR_WINDOWS_2025_VLAN10
 switchport mode access
 switchport access vlan 10
 spanning-tree portfast
 no shutdown
exit
end
copy running-config startup-config
! COMPROBAR: show vlan brief ; show interfaces trunk