Cisco Catalyst Port Mirroring

no monitor session 1

monitor session 1 source interface gi0/5
monitor session 1 destination interface gi0/8 ingress dot1q vlan 30

 #show mon
Session 1
---------
Type                   : Local Session
Source Ports           :
    Both               : Gi0/5
Destination Ports      : Gi0/8
    Encapsulation      : Native
          Ingress      : Enabled, default VLAN = 30
    Ingress encap : DOT1Q




 # ! or... untagged
 no monitor session 1
monitor session 1 source interface gi0/5
monitor session 1 destination interface gi0/8 ingress vlan 30

#do show mon                                                  
Session 1
---------
Type                   : Local Session
Source Ports           :
    Both               : Gi0/5
Destination Ports      : Gi0/8
    Encapsulation      : Native
          Ingress      : Enabled, default VLAN = 30
    Ingress encap : Untagged

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