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
EOS looks like IOS and still rejects lines IOS would take. The converter drafts a reading of one stanza you are allowed to hold. You compare it with the EOS habit: a feature that must exist, a command that was renamed, a default that differs.
One interface or one VLAN. Keep the IOS source. A migration that deletes the source in the same hour has no rollback. Secrets in the export are redacted and rotated.
Do not paste the draft onto a production EOS switch from this page. The how-to for that feature, later, is the change window.
A line the converter could not map is a line you write by hand or a line you drop. You do not invent a permit any to fill the gap.
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.
- Choose one stanza you may convert.
- Convert and read.
- Keep the IOS source.
- Delete any permit any.
- Redact secrets.
- Do not paste onto a live switch.
Mistakes that outlive the command
Cisco IOS to Arista EOS Migration Guide goes wrong in a small set of ways. The list is here so the ticket can forbid them before the window.
- The draft pasted unread.
- The IOS config deleted.
- A secret in the file.
- A permit any added to fill a gap.
- A whole chassis in one pass.
Decisions to write down
One decision for Cisco IOS to Arista EOS Migration Guide: One stanza was converted. The source still exists. Unmapped lines are listed. No secret remains. And nothing was pasted.
Checks before you call it done
Confirm this before you call the change done: The stanza is named. The draft was read. The IOS file is saved. No secret remains. And no switch was changed. If one of those fails, stop.
Before you leave the device
Cisco IOS to Arista EOS Migration Guide 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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