# Brownie Networks

## Networks created

{% hint style="info" %}

> brownie networks list true

will return full details of each network
{% endhint %}

### Under Ethereum category

![](https://1628544884-files.gitbook.io/~/files/v0/b/gitbook-x-prod.appspot.com/o/spaces%2FTgomzlmn9NrxUY0OQ3cD%2Fuploads%2F3XyKH2WjqxJV4EfAmlRW%2Fimage.png?alt=media\&token=eb210331-df1c-4fc2-966b-a6feb868a2f8)

* **ganache-local is our persistent mock network**
* requires that ganacheUI is running, so that brownie will latch onto it automatically to deploy required mock contracts.
* Persistency will last till ganacheUI is closed.

{% content-ref url="brownie-advanced/forking-and-mocking" %}
[forking-and-mocking](https://calnix.gitbook.io/eth-dev/archive/brownie-framework/brownie-advanced/forking-and-mocking)
{% endcontent-ref %}

{% content-ref url="brownie-advanced/mocking" %}
[mocking](https://calnix.gitbook.io/eth-dev/archive/brownie-framework/brownie-advanced/mocking)
{% endcontent-ref %}

### Development:

![](https://1628544884-files.gitbook.io/~/files/v0/b/gitbook-x-prod.appspot.com/o/spaces%2FTgomzlmn9NrxUY0OQ3cD%2Fuploads%2FY9kNpTTgCAVR7BceLjB1%2Fimage.png?alt=media\&token=aae26311-c372-43cb-a35b-98be107cbe00)

#### mainnet-fork-dev

* **Forks ETH mainnet**
* Provider: Alchemy

\-- brownie networks add development mainnet-fork-dev cmd=ganache-cli host=<http://127.0.0.1> fork=<https://eth-mainnet.alchemyapi.io/v2/j13raIIaPyTnV9ZVv2UnQm48PUFcPDkL> accounts=10 mnemonic=brownie port=8545

#### mainnet-fork

* brownie comes preset with mainnet-fork under Development category:
* connects to infura, and requires infura token in .env.
* Infura causes problems, so Patrick overwrites it to use Alchemy
* we shall do this too

brownie networks add development mainnet-fork cmd=ganache-cli host=<http://127.0.0.1> fork=<https://eth-mainnet.alchemyapi.io/v2/QQSu6nAAnOvWlkS9KTHk9UGk-kxieDmj> accounts=10 mnemonic=brownie port=8545

## On Ganache UI and CLI

perhaps changing ganacheUI port number to be something else, could prevent brownie(ganache-cli) to auto-attach itself, if ui is running.&#x20;

This way we can control networks with port numbers.

<https://stackoverflow.com/questions/69818605/brownie-doesnt-automatically-attach-to-local-ganache-when-i-have-ganache-open-i>