Ipv6 address command

Q: How deeply does Acing the CCNA Exam: Volume 1 Fundamentals and Protocols cover ipv6 address command?

Explains syntax, abbreviation, automatic link-local behavior, multiple addresses, removal, and manual link-local assignment.

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

The ipv6 address command is a Cisco IOS interface-configuration command that assigns an IPv6 address, including a manually specified link-local address.

Use ipv6 address in Cisco IOS interface-configuration mode to assign an IPv6 address with slash notation, such as 2001:db8::1/64. Enable ipv6 unicast-routing globally first when the router must forward IPv6 packets. section 20.4 section 20.4.1

Remember these operational details:

IOS accepts correctly abbreviated IPv6 addresses and displays addresses in their shortest abbreviated form. section 20.4.1
Configuring a global IPv6 address automatically generates a link-local address unless one is manually configured. section 20.4.1 section 20.5.3
IPv6 addresses accumulate on an interface instead of overwriting one another; remove an unwanted address with the no command. section 20.4.1
Configure a specific link-local address with ipv6 address address link-local; a new link-local address replaces the existing one. section 20.5.3

Assign and verify an interface address

R1(config)# interface g0/0 R1(config-if)# ipv6 address 2001:db8::1/64 R1(config-if)# no shutdown R1(config-if)# do show ipv6 interface brief GigabitEthernet0/0 [up/up] FE80::260:2FFF:FE62:B801 2001:DB8::1 The command assigns the global address; IOS also shows the automatically generated link-local address.

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

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Related concepts

IPv6configures · IPv6 is the sixth version of the Internet Protocol, using 128-bit network addresses for packet-based communication.
ip address commandequivalent to · The ip address command is a Cisco IOS interface-configuration command that assigns an IPv4 address and netmask to an interface.
anycastused by · Anycast is a networking method in which one address is assigned to multiple endpoints and traffic is routed to one endpoint according to network routing.
link-local addressproduces · An IPv6 link-local address is an IPv6 unicast address valid only for communication between devices on the same local network segment.
ipv6 route commandconfigured by · The Cisco IOS ipv6 route command creates a static IPv6 route in a router's routing table.
ipv6 address autoconfigincludes · ipv6 address autoconfig is a Cisco IOS interface command that enables an interface to obtain an IPv6 prefix through router discovery and generate an address automatically.

This explainer was generated by Manning's knowledge graph from the text of Acing the CCNA Exam: Volume 1 Fundamentals and Protocols. The section links point to the parts of the book it draws on.