Switching Commands Cisco

Range Mode

Configuring multiple interfaces simultaneously using interface range commands for efficient bulk configuration

Configure multiple interfaces simultaneously using the interface range command to save time and ensure consistent settings.

Step 1: Enter interface range mode Select a continuous range of interfaces to configure together.

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SW1>enable
SW1#configure terminal
SW1(config)#interface range gigabitEthernet 0/1-24
SW1(config-if-range)#

Step 2: Configure basic access port settings Apply common access port configurations to all interfaces in the range.

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SW1(config-if-range)#switchport mode access
SW1(config-if-range)#switchport access vlan 10
SW1(config-if-range)#switchport port-security
SW1(config-if-range)#switchport port-security maximum 2
SW1(config-if-range)#switchport port-security violation restrict
SW1(config-if-range)#spanning-tree portfast
SW1(config-if-range)#spanning-tree bpduguard enable

Step 3: Configure non-continuous ranges Use comma-separated values to configure specific interfaces that aren’t in sequence.

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SW1(config)#interface range gi0/1-5, gi0/10-15, gi0/20
SW1(config-if-range)#description User Access Ports
SW1(config-if-range)#switchport access vlan 20
SW1(config-if-range)#no shutdown
SW1(config-if-range)#exit

Step 4: Configure trunk ports range Set up multiple uplink interfaces as trunk ports.

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SW1(config)#interface range gi0/47-48
SW1(config-if-range)#description Uplink Trunks
SW1(config-if-range)#switchport mode trunk
SW1(config-if-range)#switchport trunk allowed vlan 10,20,30,40
SW1(config-if-range)#switchport trunk native vlan 99
SW1(config-if-range)#no shutdown
SW1(config-if-range)#end

Step 5: Verify the configuration

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SW1#show running-config | section interface GigabitEthernet0/1
SW1#show interfaces status
SW1#show vlan brief

Key Points:

  • Range mode applies commands to ALL interfaces in the specified range
  • Use interface range for FastEthernet (fa), GigabitEthernet (gi), or TenGigabitEthernet (te)
  • Commands entered in range mode cannot be undone individually - affects entire range
  • Always verify configuration before applying to production interfaces