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Show ipv6 interface brief

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

show ipv6 interface brief is a Cisco IOS command that displays concise IPv6 addressing and operational status information for interfaces.

show ipv6 interface brief is a Cisco IOS verification command that summarizes each interface’s IPv6 addresses and status. Use it after configuring an address to confirm whether an interface is up, administratively down, or unassigned. section 20.4.1 section 20.4

Read the output for these details:

  • IOS displays IPv6 addresses in uppercase hexadecimal and automatically applies shortest-form abbreviation. section 20.4.1

Verify an IPv6 interface

From interface configuration mode, enter do show ipv6 interface brief. An output such as GigabitEthernet0/0 [up/up] followed by FE80::... and 2001:DB8::1 confirms the interface is enabled and has both address types.

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

How deep it goes
Explains concise output, address abbreviation, link-local generation, and multiple-address behavior without detailing routing internals.
Examples
Uses R1 interface verification, abbreviated IPv6 output, and R2’s multiple-address configuration.
What you can do after
Diagnose interface state and confirm IPv6 addresses, link-local generation, and address retention from Cisco IOS output.
How it connects
Connects IPv6 addressing with link-local IPv6 addresses, IPv6 routing, and Modified EUI-64.
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Related concepts

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