====== Comandi utili Cisco ======

===== Visualizzare le porte in err-disable =====

  show errdisable detect 
  show interfaces status | incl err-disabled

===== Mitigazione problemi dhcp windows e conflitto ip causato dal device tracking di windows =====

  ip device tracking probe auto-source fallback 0.0.2.1 255.255.0.0 override
  errdisable recovery cause dhcp-rate-limit
  
===== Usare sfp o transceiver non Cisco =====

  swXXX(config)#service unsupported-transceiver
  
  Warning: When Cisco determines that a fault or defect can be traced to
  the use of third-party transceivers installed by a customer or reseller,
  then, at Cisco's discretion, Cisco may withhold support under warranty or
  a Cisco support program. In the course of providing support for a Cisco
  networking product Cisco may require that the end user install Cisco
  transceivers if Cisco determines that removing third-party parts will
  assist Cisco in diagnosing the cause of a support issue.
  
===== PoE: Visualizzare valori **attendibili** sul consumo di un device =====

  show power inline <interface> detail



===== DHCP Snooping debugging =====

  show ip dhcp snooping binding interface gigabitEthernet 1/0/22
  
  term mon
  
  debug ip dhcp snooping packet
  debug ip dhcp snooping event
  debug ip dhcp snooping agent
  
  no debug all
  term no mon


===== 802.1x =====

  show auth sessions interface Gi1/0/25 details