MPTCP Test Bed

Contents

1. Overview
2. How to Use
3. Configuration
   1. Topology Configuration File
   2. Configuration Options
      1. Node Options
      2. Link Options

Overview

This project aims to provide an easy to set up environment to test MPTCP in different network topologies and scenarios. Since MPTCP usually requires some previous configuration related to routing and path managing for each host, recreating the same configurations multiple times in order to conduct tests can become a time consuming task. With this in mind, this project allows to describe a topology using TOML, and then instantiate a CORE session with routing and endpoints configured in all nodes.

For path managing configuration it's possible to use ip mptcp or Intel's daemon mptcpd. As for routing rules, the configuration is conducted as described in multipath-tcp.org.

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How to Use

1. Create your topology and add it to the topologies folder
2. Run the script with the topology argument (no file extension): python3 testbed.py <topology>
3. Connect to the new created session in the CORE GUI

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Configuration

Topology Configuration Files

Each topology consists of two configuration files:

nodes.toml:

[<node1>]
model = "PC"

[<node2>]
model = "router"

# ...

links.toml:

[<link1>]
edges = ["<node1>", "<node2>"]

[<link2>]
edges = ["<node3>", "<node4>"]

# ...

See examples for more details.

Configuration Options

Node options

Option	Description	Default Value
model	The node type ("PC", "router", "switch")	"router"
files	List of files to be copied to the node (The files must be contained in files folder)	[ ]
services	Services to run on the node	[ ] (CORE's default)

When model="PC", the following suboptions are available:

Option	Description	Default Value
path_manager	The path manager to be used in this node ("ip_mptcp", "mptcpd")	"ip_mptcp"

When path_manager="mptcpd", the following suboptions are available:

Option	Description	Default Value
add_flags	Flags for announced adresses	"subflow,signal"
notify_flags	Address notification flags	"existing"
load_plugins	Plugins to load	" " (Loads all plugins"
plugins_conf_dir	Plugins configuration path (Specific flag for this mptcpd version)	Default config path

For more information about these flags see mptcpd documentation

When model="wlan", the following suboptions are available:

Option	Description	Default Value
range	Wlan range	None (CORE's default)
bandwidth	Wlan bandwidth	None (CORE's default)
delay	Wlan delay	None (CORE's default)
jitter	Wlan jitter	None (CORE's default)
error	Wlan error percentage	None (CORE's default)

Link options

Option	Description	Default Value
node1	Host name of link endpoint 1	Required Field
node2	Host name of link endpoint 2	Required Field
bandwidth	Link bandwidth	None (CORE's default)
delay	Link delay	None (CORE's default)
dup	Link duplication rate	None (CORE's default)
loss	Link loss percentage	None (CORE's default)
jitter	Link jitter	None (CORE's default)
use_mptcp	If this link should be considered to configure a MPTCP endpoint when connected to a "PC" node	true