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Fix Step 6 commands and explain IP conflict / management VLAN design

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- Fix save command: copy running-config nvram:config.cfg -> save config
- Fix port format note: remove incorrect 1/1 slot prefix, both models use bare numbers
- Add note explaining why 192.168.1.1 conflict is not a problem (management VLAN 99 is separate subnet)
- Add console commands to change VLAN 1 IP if needed before VLAN 99 is configured

https://claude.ai/code/session_01JR2EMK7rwrZJowpstcaxQ6
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Claude
2026-03-24 03:47:09 +00:00
parent 8ab9cd9cf6
commit ff6e3920c0
1 changed files with 17 additions and 6 deletions
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README.md
+17 -6
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@@ -109,17 +109,28 @@ vlan pvid 1 99
ip ssh
username admin password YourPassword
end
copy running-config nvram:config.cfg
save config
```
Replace `1` with the port number your management computer will plug into. Replace `YourPassword` with a strong password (8–32 characters; allowed special characters: `! @ # $ % ^ & * - _ = + [ ] ; : , . /` — no spaces, no quotes).
**ERS 59100 note:** Port numbering on the 59100 is `1/1` through `1/96` for copper and `1/97` through `1/100` for SFP+ uplinks. Substitute accordingly:
**Port numbering:** On both the ERS 5952 and ERS 59100, use bare port numbers (`1`, `2`, `48`…). There is no slot prefix.
```
vlan members add 99 1/1
vlan pvid 1/1 99
```
> **What about the switch's existing IP?**
> Out of the box the switch has `192.168.1.1` on VLAN 1. If your router is also `192.168.1.1`, they will conflict — two devices with the same IP on the same network causes ARP fights and makes both unreliable.
>
> This setup deliberately avoids that by putting management traffic on a **separate VLAN (99) with its own subnet (192.168.99.x)**. Your management computer gets a static IP on that subnet and talks to the switch there. The switch's original VLAN 1 address is irrelevant once VLAN 99 is up.
>
> If you ever need to change the switch's VLAN 1 IP (e.g. to remove the conflict before VLAN 99 is configured):
> ```
> config terminal
> interface vlan 1
> ip address 192.168.1.2 255.255.255.0
> exit
> ip default-gateway 192.168.1.1
> exit
> save config
> ```
After the last command the switch confirms with `CP1 [07/04/15 12:00:00.000:INFO]: Operation Success` or similar.