This is an original planning guide. It is not a vendor manual, an official standard, or legal advice. Example addresses use documentation ranges. Review every command before you paste it.
What this hour is for
A global unicast address is the one you plan to route, and only when the prefix is yours. A unique-local address stays inside your network. A link-local address, fe80::, belongs to one link and is not a site plan. Multicast is a group, not a host plan.
The identifier and the ULA generator draft a label or a lab prefix. 2001:db8::/32 is documentation. Do not deploy it as if the prefix were assigned to you.
Write the type next to the address in the ticket. A link-local used as a gateway in a drawing is a different decision from a global gateway, and the drawing should say which one it is.
The change you can finish
Apply nothing during the writing of the note. When the lab window opens, it is one change on the device named in the ticket. Read the draft, then the device, then decide.
Rollback is the file or the revision you saved first. You do not invent a rollback after the only copy is gone.
- Take one address you may use, or a documentation address.
- Read the type.
- Write GUA, ULA, link-local, or multicast.
- Reject 2001:db8:: for production.
- Do not configure a router.
- Stop after one address.
Mistakes that outlive the command
IPv6 Address Types (GUA, ULA, Link-Local, Multicast) goes wrong in a small set of ways. The list is here so the ticket can forbid them before the window.
- A link-local used as the site plan.
- A documentation prefix deployed.
- A ULA advertised to the internet.
- Two types treated as the same address.
Decisions to write down
One decision for IPv6 Address Types (GUA, ULA, Link-Local, Multicast): The type is named. Documentation space stays in the note. ULA is not advertised. Link-local is not the site gateway plan. And no router was configured.
Checks before you call it done
Confirm this before you call the change done: One address was classified. The type is in the ticket. 2001:db8:: was not applied. No advertisement was made. And the device was left alone. If one of those fails, stop.
Before you leave the device
IPv6 Address Types (GUA, ULA, Link-Local, Multicast) ends when the hostname on the device matches the hostname in the ticket. If it does not, you are on the wrong box. Stop. A command that succeeded on the wrong box is not progress.
The draft stays a draft until a person has read the names in it. A generator does not log into the device and does not know which interface is the uplink. You delete a line that names a device, a zone, or a prefix you did not write down.
0.0.0.0/0 is not kept because a sample included it. A source you can say is the source you keep. 192.0.2.0/24, 198.51.100.0/24, 203.0.113.0/24, and 2001:db8::/32 are documentation. They belong in the note. They are not prefixes you type onto a production device because they appeared in a draft.
prompt-for-this is a reminder that a secret is missing. It is not a password, a key, a community string, or a pre-shared key you save in the ticket or in git. The real secret stays in the store.
One change is the window. A VLAN and a routing protocol and a VPN do not share it. If two things move and the result is wrong, you will not know which one did it. The next feature waits for its own page.
If the same step fails twice, stop for the day. The failure is the result. Adding a forum command beside a half-applied config produces a device nobody can rebuild. Restore the copy you took first.
A second person reads the device name and the change aloud. If they cannot find them in the ticket, the note is not done. Silence is not agreement. Then leave the device alone.
This page is a planning guide. It is not a vendor manual, not an official standard, and not a permission to touch a network you do not administer. The pillar guide owns the wider design. This page owns one lab proof.
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