Labs/Lab00.md

+In this lab, we will set up a simple topology with [containerlab](https://containerlab.dev/). We will create and modify gnmi-target-switch0 (server with a gNMI-target, handled as switch) that we manage with the goSDN controller.
+
+**Please note: You need to have the lab-vm or all the software in [Prerequisites](Labs/Prerequisites) installed to run this lab.**
+
+The figure below shows what we want to set up using the goSDN-Controller, goSDN-CLI and gNMI:
+![lab00-network](uploads/8368a36fc08940d10ec416b8875c70a8/lab00-network.png)
+
+## Run command to build the docker image for the gNMI target
+
+First, go to your local gnmi-target repository:
+
+```bash
+cd gnmi-target
+```
+Next, build the image:
+
+```bash
+git checkout develop
+make container
+```
+
+## Run the containerlab
+
+Go to the directory of gosdn and use following command:
+```bash
+make containerlab-slim-start
+```
+
+## Open a new terminal and start the CLI to talk to the controller (Do not close the previous terminal)
+
+Build command prompt
+
+```bash
+make build
+cd artifacts
+./gosdnc prompt
+```
+
+![CLI_image](uploads/155116353627ae3070a53b3fdaeda421/CLI_image.PNG)
+
+## Login into the controller with the credentials
+
+```bash
+login --controller 172.100.0.5:55055 --u admin --p <password>
+```
+
+### To get the password go to the previous terminal and use the following commands
+
+```bash
+docker logs clab-gosdn_csbi_arista_base-gosdn
+```
+
+In the end of the script a 16 character alphanumeric password is generated like this: “Generated admin password: uyslboh15gjp9dne” (not the actual password, just an example)
+![login_password](uploads/01ef770d924f8d3f85726bbf124f93fd/login_password.PNG)
+
+### Set-up the PND ID
+
+```bash
+pnd use (Choose ID from the displayed menu)
+```
+
+![PND_id_display](uploads/2a9f123cc63f6bc1b046beca92c6d0b2/PND_id_display.PNG)
+![PND_success](uploads/1f9ec97b38ee90fcdcf0c157972297a1/PND_success.PNG)
+
+## Set-up the switches
+Switch0:
+```bash
+mne create --address 172.100.0.11:7030 --name switch0 --username admin --password admin --tls --plugin-id d1c269a2-6482-4010-b0d8-679dff73153b
+```
+Switch1:
+```bash
+mne create --address 172.100.0.12:7030 --name switch1 --username admin --password admin --tls --plugin-id d1c269a2-6482-4010-b0d8-679dff73153b
+```
+## Check if the switches were created
+
+```bash
+mne list
+```
+In here, the UUID is also visible which we need for the next step:![Lab00_mne_list](uploads/23ec897ac1b9a307e733786529cf875f/Lab00_mne_list.png)
+
+**Please note that the UUID may vary.**
+
+## Set another hostname for Switch0
+First, we want to see the current hostname:
+```bash
+mne path get <UUID> system/config/hostname
+```
+We get following output:<br>
+![Lab00_mne_get_path](uploads/bf90335d558c8b904d658683446fa427/Lab00_mne_get_path.png)
+
+Now, we want to change the hostname gnmi-target-switch0 to switch0:
+```bash
+mne path set <UUID> system/config/hostname switch0
+```
+After changing the hostname, we have to commit our change.
+The change-id may vary too, so you can use the auto-completion tool of the cli or get all changes with following command:
+```bash
+change list
+```
+After getting the change-id, we will execute following command:
+```bash
+change commit <change-id>
+```
+Now we have to confirm the commit:
+```bash
+change confirm <change-id>
+```
+![Lab00_change_commit_confirm](uploads/e53eb1a9b7eb44b8fc459917872a4c5a/Lab00_change_commit_confirm.png)
+
+If we execute the get-command again, we can confirm that the change took place:
+```bash
+mne path get <UUID> system/config/hostname
+```
+![Lab00_mne_get_path_new_hostname](uploads/4319202ec04c381ace695de8ffc774cf/Lab00_mne_get_path_new_hostname.png)
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