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.
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
Help
Finding help in this section.
- nmcli examples
man nmcli-examples
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
IPv6 Connections
Configure IPv6 on an existing interface
- server1
nmcli con mod eth1 ipv6.method manual ipv6.addresses fddb:fe2a:ab1e::c0a8:61/64
- server2
nmcli con mod eth1 ipv6.method manual ipv6.addresses fddb:fe2a:ab1e::c0a8:62/64
Bring interface up
nmcli con up eth1
IPv6 Basic Troubleshooting
From server1; Ping the IPv6 configured address that is configured on server2
ping6 fddb:fe2a:ab1e::c0a8:62
Show the IPv6 routing table
ip -6 route show