Emulating WAN by using mininet.

Miniwan generates a WAN topology according to the configuration file conf/. The IP addresses are automatically generated.

Miniwan supports several routing protocols,

• OSPF
• BGP

/bin/miniwan does the following works,

1. Parse arguments.
2. Read topology from the configuration file.
3. Add routers and hosts according to the topology, and automatically assign IP addresses to network interfaces.
4. Start routing.
5. Start CLI.

Note: The routing protocols need some time to converge.

Install required packages.

# apt-get install quagga
# apt-get install python-yaml

Install mininet

The WAN regions are defined in regions section. Each region consists of a router and a host. The region name is only useful for link connections.

We can define default bandwidth, delay and loss rate for LAN and WAN links in defaults section. We can also specific bandwidth, delay and loss rate for each individual WAN link.

We provide topologies that described in Google B4 and Microsoft SWAN papers. A very simple topology configuration file is as follows.

defaults:
  lan_link:
    default_bw: 100
    default_delay: 0.1ms
    default_loss: 0.001
  wan_link:
    default_bw: 10
    default_delay: 10ms
    default_loss: 0.1
regions:
- name: region1
- name: region2
links:
- src: region1
  dst: region2

Note: Quagga configuration files should be in a directory that user quagga can access.

# cd bin
# python miniwan -h
usage: miniwan [-h] [-4] [-6] [-t TOPOLOGY] [-p {bgp,ospf}] [-l {info,debug}]

optional arguments:
  -h, --help            show this help message and exit
  -4, --ipv4            pure IPv4 WAN
  -6, --ipv6            pure IPv6 WAN
  -t TOPOLOGY, --topology TOPOLOGY
                        topology file
  -p {bgp,ospf}, --protocol {bgp,ospf}
                        routing protocol
  -l {info,debug}, --log {info,debug}
                        log level

1. Mininet Network with OSPF and BGP
2. BGP Path Hijacking Attack Demo
3. sFlow-RT