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Interface range

As explained in Acing the CCNA Exam: Volume 1 Fundamentals and Protocols

interface range is a Cisco IOS interface-configuration command that selects multiple interfaces for simultaneous configuration.

The Cisco IOS interface range command selects multiple interfaces so one configuration command applies to all of them at once. It saves time when configuring several similar ports. section 8.1.1 section 8.4

Use the command with interface identifiers:

  • interface range type slot/port-port selects a consecutive range, such as interface range f0/1-2. section 8.1.1
  • Separate different interface types or nonconsecutive selections with commas, such as interface range f0/3-8, g0/2. section 8.1.1

Configure two switch ports together

SW1(config)# interface range f0/1-2 SW1(config-if)# description ## end users ## The description is applied to both FastEthernet interfaces.

How Acing the CCNA Exam: Volume 1 Fundamentals and Protocols covers it

How deep it goes
Explains range syntax, interface-name components, and comma-separated mixed selections without descending into IOS internals.
Examples
Uses a switch example that applies an end-user description to F0/1 and F0/2.
What you can do after
Operate/configure several interfaces at once using a range command and a shared interface-configuration command.
How it connects
Connects interface range with interface configuration mode, interface descriptions, and interface-status display commands.
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