Adding support of node migration for multimode mininet setup with config

Presentation:

Link

Structure

There are two topologies saved in directories server1 and server2. Configuration of all the FRR daemons is stored in the conf directory of each of 2 directories stated above. All the testing staff is the same for two servers. You should pass the argument --topology to pytest to specify the selected one.

Usage:

Prerequisites:

• 2 VM's with installed FRR, mininet and traceroute and python3.6+
• Connection between the VM's (may be through the internet)

Usage steps

• Clone this repository to both the VM's: git clone https://github.com/Voravomas/adv_networks_project
• Run tests on both VM's but with different topologies sudo pytest-3 test_main.py --topology <TOPOLOGY> --source_ip <CURRENT_VM_IP_ADDRESS> --remote_ip <REMOTE_VM_IP_ADDRESS> [-x] Where <TOPOLOGY> can be either server1 or server2 and -x makes tests stop after the first failure

NOTE: tests should be run within at most 30 seconds interval. Otherwise, they will not be able to synchronize

Task:

1. Have at least 3 FRR routers in a cluster (2 routers on one server and one on another)
   
2. Verify connectivity between all routers
   
3. Do some runtime configuration on the routers. (IP, files, etc.)
   
4. Migrate one router from the server with two routers to another server.
   
5. Verify connectivity.
   
6. Do configuration in a way that 2 additional hosts won’t lose connectivity during node migration.
   

Topology:

Plan:

1. DONE Create Basic Topology
2. DONE Create Server1 config and test it
3. DONE Create Server2 config and test it
4. DONE Test connectivity between servers
5. DONE Send running config from Server2 to Server1
6. DONE Migrate R3
7. DONE Write tests
8. DONE Create presentation

Other notes:

• To add internet to Mininet: sudo dhclient eth1

• Add l2tp tunnel: sudo ip l2tp add tunnel tunnel_id 1000 peer_tunnel_id 1000 ncap udp local <LOCAL_IP> remote <REMOTE_IP> udp_sport 60000 udp_dport 60000

• Add session: sudo ip l2tp add session name eth12 tunnel_id 1000 session_id 2000 peer_session_id 2000