Port connections cannot be mixed ordered and named


A port connection is an association between a logical port and a physical port. A logical port can be associated with multiple physical ports, but a physical port can only be associated with one logical port.

A logical port is an end-point for data communication. A physical port is a hardware interface that connects a device to a network.

Logical ports are often grouped into sets called channels. A channel represents a data path between two or more devices. Channels can be point-to-point (between two devices) or multipoint (between three or more devices).

What is the problem?

In computer networking, a port is a communication endpoint. A physical port is a specific location on a physical network device (e.g., a switch, router, or RAS). A logical port is an addressable end point in software, such as an application listening on a given TCP/IP port number.

Why does this happen?

When you are configuring your app, you might have noticed that some of the settings (like database settings) can be defined using either an ORDERED list or a NAMED dict.

What’s the difference?

An ORDERED list is just that – a list of values in a particular order. You can access the values by their index in the list (eg, 0, 1, 2…).

A NAMED dict is a dictionary where each value has a name (or “key”). You can access the values by their name (eg, “host”, “port”, “user”…).

How to fix it

If you receive an error that port connections cannot be mixed ordered and named, it is likely because you are using theophylline in your ports file. The correct syntax for theophylline is as follows:

theophylline (UNORDERED)
type tcp;
port 6001;


In conclusion, port connections cannot be mixed ordered and named. The only way to ensure that the correct ports are used is to either use a standard cable with the correct number and type of connector for your application or to label the ports with their function. Thank you for reading!

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