> For the complete documentation index, see [llms.txt](https://calnix.gitbook.io/eth-dev/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://calnix.gitbook.io/eth-dev/archive/brownie-framework/brownie-networks.md).

# Brownie Networks

## Networks created

{% hint style="info" %}

> brownie networks list true

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

### Under Ethereum category

![](/files/qeLgIcLazNr23wrvGlmB)

* **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="/pages/gYmjzKvLxljVjLivi5zd" %}
[Forking and Mocking](/eth-dev/archive/brownie-framework/brownie-advanced/forking-and-mocking.md)
{% endcontent-ref %}

{% content-ref url="/pages/BC0WWqcg7xMipDkkX5Y9" %}
[Mocking](/eth-dev/archive/brownie-framework/brownie-advanced/mocking.md)
{% endcontent-ref %}

### Development:

![](/files/wGW13nObdjMRa46XGOeu)

#### 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>


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