Connectivity Guide

Link local IPv6 address: fe80::eef4:bbff:fefb:fa30/64
Global IPv6 address: 2020::1/64
...
OS10# show ipv6 interface brief
Interface Name admin/protocol IPV6 Address/Link-Local Address IPv6 Oper Status
===================================================================================
Ethernet 1/1/1:1 up / up fe80::eef4:bbff:fefb:f9f0/64
2017::1/64 Enabled
Ethernet 1/1/20 up / up fe80::eef4:bbff:fefb:fa30/64
2020::1/64 Enabled
Management 1/1/1 up / up fe80::eef4:bbff:fefb:f9ef/64 Enabled
Vlan 1 up / up fe80::eef4:bbff:fefb:fa59/64 Enabled
IPv6 addresses
An IPv6 address consists of a 48-bit global routing prex, optional 16-bit subnet ID, and a 64-bit interface identier in the extended
universal identier (EUI)-64 format.
IPv6 128-bit addresses are represented as a series of eight 16-bit hexadecimal elds separated by colons: x:x:x:x:x:x:x:x.
2001:0db8:0000:0000:0000:0000:1428:57a
Leading zeros in each eld are optional. You can also use two colons (::) to represent successive hexadecimal elds of zeros, but you can
use this short version only one time in each address:
2001:db8::1428:57ab
In the following example, all the addresses are valid and equivalent:
• 2001:0db8:0000:0000:0000:0000:1428:57ab
• 2001:0db8:0000:0000:0000::1428:57ab
• 2001:0db8:0:0:0:0:1428:57ab
• 2001:0db8:0:0::1428:57ab
• 2001:0db8::1428:57ab
• 2001:db8::1428:57ab
Write IPv6 networks using CIDR notation. An IPv6 network or subnet is a contiguous group of IPv6 addresses which must be a power of
two. The initial bits of addresses, which are identical for all hosts in the network, are the network's prex.
A network is denoted by the rst address in the network and the size in bits of the prex in decimal, separated with a slash. Because a
single host is seen as a network with a 128-bit prex, host addresses may be written with a following /128.
For example, 2001:0db8:1234::/48 stands for the network with addresses 2001:0db8:1234:0000:0000:0000:0000:0000
through 2001:0db8:1234:ffff:ffff:ffff:ffff:ffff.
As soon as you assign an IPv6 address, IPv6 packet processing is enabled on an interface. You can manually disable and re-enable IPv6
processing on an interface congured with an IPv6 address using the no ipv6 enable and ipv6 enable commands.
To remove all IPv6 addresses from an interface, use the no ipv6 address command. To remove a specic IPv6 address, use the ipv6
address
ipv6-address/mask command.
Link-local addresses
When an OS10 switch boots up, an IPv6 unicast link-local address automatically assigns to an interface using stateless conguration. A link-
local address allows IPv6 devices on a local link to communicate without requiring a globally unique address. IPv6 reserves the address
block FE80::/10 for link-local unicast addressing.
Global addresses
396
Layer 3