====== Configure Ipv6 Addresses And Perform Basic Ipv6 Troubleshooting ======

**General Information**

IPv6 configuration using nmcli. (Network Manager CLI)

You will be provided IPv6 addresses to use if asked to configure them during the exam.

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====== Lab Setup ======

The following virtual machines will be used:
  * server1.example.com (192.168.1.150) -> Configure an ipv6 interface
  * server2.example.com (192.168.1.151) -> Configure an ipv6 interface

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====== Help ======

Finding help in this section.
  * nmcli examples<code bash>man nmcli-examples</code>

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====== IPv6 General Info ======

General information about IPv6.

|  ^ IPv4 ^ IPv6 ^
^ Total Bits | 32 | 128 |
^ Possible Addresses | 4 billion | 2 to the power of 128 |
^ Format | 4 groups of 8 bit decimals | 8 groups of 16 bit hexadecimal |
^ Default router | n/a | ::/0 (used in routing tables) |
^ Localhost address | 127.0.0.1/8 | ::1/128 |
^ All addresses | 0.0.0.0 | :: |
^ Multicast | 224.0.0.0/4 | ff00::/8 |
^ Non-routable addresses | 10.0.0.0/8 (1 example) | fc00::/7 (unique local) | 
^ Link local address | n/a | fe80::/64 | 

  * IPv6 standard subnet mask: /64

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====== IPv6 Connections ======

\\
Configure IPv6 on an existing interface
  * server1<code bash>nmcli con mod eth1 ipv6.method manual ipv6.addresses fddb:fe2a:ab1e::c0a8:61/64</code>
  * server2<code bash>nmcli con mod eth1 ipv6.method manual ipv6.addresses fddb:fe2a:ab1e::c0a8:62/64</code>

\\
Bring interface up
<code bash>
nmcli con up eth1
</code>

===== IPv6 Basic Troubleshooting =====

From server1; Ping the IPv6 configured address that is configured on server2
<code bash>
ping6 fddb:fe2a:ab1e::c0a8:62
</code>

\\
Show the IPv6 routing table
<code bash>
ip -6 route show
</code>

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