A5. Verificació

Mostrar les VLANs

Switch#show vlan brief 

VLAN Name                             Status    Ports
---- -------------------------------- --------- -------------------------------
1    default                          active    Gig0/2
2    VLAN2                            active    Fa0/1, Fa0/2, Fa0/3, Fa0/4
                                                Fa0/5, Fa0/6, Fa0/7, Fa0/8
                                                Fa0/9, Fa0/10
3    VLAN3                            active    Fa0/11, Fa0/12, Fa0/13, Fa0/14
                                                Fa0/15, Fa0/16, Fa0/17, Fa0/18
                                                Fa0/19, Fa0/20, Fa0/21, Fa0/22
                                                Fa0/23
4    ADMINISTRACIO                    active    Fa0/24
1002 fddi-default                     active    
1003 token-ring-default               active    
1004 fddinet-default                  active    
1005 trnet-default                    active  

Switch#show vlan ?
  brief  VTP all VLAN status in brief
  id     VTP VLAN status by VLAN id
  name   VTP VLAN status by VLAN name
  <cr>
Switch#show vlan id ?
  <1-4094>  ISL VLAN IDs 1-1005
Switch#show vlan id 2

VLAN Name                             Status    Ports
---- -------------------------------- --------- -------------------------------
2    VLAN2                            active    Fa0/1, Fa0/2, Fa0/3, Fa0/4
                                                Fa0/5, Fa0/6, Fa0/7, Fa0/8
                                                Fa0/9, Fa0/10

VLAN Type  SAID       MTU   Parent RingNo BridgeNo Stp  BrdgMode Trans1 Trans2
---- ----- ---------- ----- ------ ------ -------- ---- -------- ------ ------
2    enet  100002     1500  -      -      -        -    -        0      0

Switch#

Consulta configuració troncals

Switch#show interfaces trunk 
Port        Mode         Encapsulation  Status        Native vlan
Gig0/1      on           802.1q         trunking      99

Port        Vlans allowed on trunk
Gig0/1      2-4

Port        Vlans allowed and active in management domain
Gig0/1      2,3,4

Port        Vlans in spanning tree forwarding state and not pruned
Gig0/1      2,3,4

Consulta de les interfícies VLAN actives (Amb adreçament IP)

SWESQUERRA#sh ip interface bri
Interface              IP-Address      OK? Method Status                Protocol 
FastEthernet0/1        unassigned      YES manual down                  down 
FastEthernet0/2        unassigned      YES manual down                  down 
FastEthernet0/3        unassigned      YES manual up                    up 
...
FastEthernet0/24       unassigned      YES manual down                  down 
GigabitEthernet0/1     unassigned      YES manual up                    up 
GigabitEthernet0/2     unassigned      YES manual down                  down 
Vlan1                  unassigned      YES manual administratively down down 
Vlan4                  192.168.4.100   YES manual up                    up

Comandes per obtenir informació de la configuració d'una VLAN

Show vlan // Mostra les VLANs que es troben definides al switch.

Show vlan-membership // Mostra quins ports estan assignats a quines VLANs.

Show interfaces switchport // Per comprovar quines interfaces fan d'enllaços

Show ip interface brief // Fa un informe (brief) sobre les adreces que tenen cada interfaç.

Show interfaces trunk // Mostra quins enllaços troncals estan configurats i a quines interfaces.

Show interface nom_interfaç switchport

Verificació VTP

Switch#show vtp status

Switch#show vtp counters

Switch#show vlan brief