Cisco Ios Port Mirroring

I have just set up a port mirroring on my Cisco 4503 switch by issuing these commands:

Cat4503_2(config)#monitor session 1 source interface GigabitEthernet1/1 - 3 , GigabitEthernet1/5 - 10 , GigabitEthernet1/15 - 20 , GigabitEthernet2/1 - 6 , GigabitEthernet3/1 - 24
Cat4503_2(config)#monitor session 1 destination interface GigabitEthernet3/3
Cat4503_2(config)#exit
Cat4503_2>show monitor session 1
Session 1
---------
Type              : Local Session
Source Ports      :
    Both          : Gi1/1-3,Gi1/5-10,Gi1/15-20,Gi2/1-6,Gi3/1-24
Destination Ports : Gi1/4
    Encapsulation : Native
          Ingress : Disabled
         Learning : Disabled

Cat4503_2>write mem

Port mirroring cheet-sheet