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Communication_Sandbox
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Mininet Updates

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edoardoColi
edoardocoli 1 year ago
parent b25d1e04fc
commit 974db9c1f9
3 changed files with 167 additions and 130 deletions
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159
MininetNetPractice.py
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@ -6,7 +6,6 @@ from mininet.node import Node
from mininet.cli import CLI
from mininet.link import TCLink
from mininet.log import setLogLevel
from copy import copy #TODO verify/temporaneo
class MyRouter (Node):
def config(self, **params):
@ -18,78 +17,61 @@ class MyRouter (Node):
def build_topology(config_file):
topo = Topo()
elementsH = {} # Dictionary to store nodes
elementsR = {} # Dictionary to store nodes
elementsS = {} # Dictionary to store nodes
h1 = topo.addHost('h1', ip='161.46.247.131/26', defaultRoute='via 161.46.247.129')
h2 = topo.addHost('h2', ip='161.46.247.196/27', defaultRoute='via 161.46.247.195')
r1 = topo.addNode('r1', cls=MyRouter, ip='161.46.247.129/26')
topo.addLink(h1, r1, intfName2='R23', params2={'ip' : '161.46.247.129/26'})
topo.addLink(h2, r1, intfName2='R22', params2={'ip' : '161.46.247.195/27'})
# with open(config_file, 'r') as file:
# for line in file:
# line = line.strip()
# if line.startswith('#'): #Skip comment
# continue
# parts = line.split(" ") #Parse the topology file using spaces
# if parts[0] == 'host': #Parse hosts
# host_name = parts[1]
# host_ip = parts[2]
# host_nexthop = 'via ' + parts[3]
# host = topo.addHost(host_name, ip=host_ip, defaultRoute=host_nexthop)
# host_c = copy(host)
# elementsH[host_name] = (host_c)
# elif parts[0] == 'router': #Parse routers
# router_name = parts[1]
# router_ip = parts[2]
# router = topo.addNode(router_name, cls=MyRouter, ip=router_ip)
# router_c = copy(router)
# elementsR[router_name] = (router_c)
# elif parts[0] == 'switch': #Parse switches
# switch_name = parts[1]
# switch = topo.addSwitch(switch_name)
# switch_c = copy(switch)
# elementsS[switch_name] = (switch_c)
# elif parts[0] == 'linkSH': #Parse links switches to hosts
# node1 = parts[1]
# node2 = parts[2]
# # topo.addLink(node1, node2)
# elif parts[0] == 'linkSS': #Parse links switches to switches
# node1 = parts[1]
# node2 = parts[2]
# # topo.addLink(node1, node2)
# elif parts[0] == 'linkHR': #Parse links hosts to routers
# node1 = parts[1]
# node2 = parts[2]
# intf_name2 = parts[3]
# n2_ip = parts[4]
# topo.addLink(elementsH.get(node1), elementsR.get(node2), intfName2=intf_name2, params2={'ip' : n2_ip})
# elif parts[0] == 'linkRR': #Parse links routers to routers
# node1 = parts[1]
# node2 = parts[2]
# intf_name1 = parts[3]
# intf_name2 = parts[4]
# ip1 = parts[5]
# ip2 = parts[6]
# # topo.addLink(node1, node2, intfName1=intf_name1, intfName2=intf_name2, params1={'ip' : ip1}, params2={'ip' : ip2})
# # elif parts[0] == 'route': #Parse routing tables
# # name = parts[1]
# # for node in topo.nodes():
# # if node == name:
# # (node).cmd('ip route add 0.0.0.0/0 via 10.0.0.1 dev r1-eth2')
# # break
elements = {} # Dictionary to store nodes
# elements['Internet'] = topo.addNode('Internet', cls=MyRouter, ip='0.0.0.0/0')
with open(config_file, 'r') as file:
for line in file:
line = line.strip()
if line.startswith('#'): #Skip comment
continue
parts = line.split(" ") #Parse the topology file using spaces
if parts[0] == 'host': #Parse hosts
host_name = parts[1]
host_ip = parts[2]
host_nexthop = 'via ' + parts[3]
elements[host_name] = topo.addHost(host_name, ip=host_ip, defaultRoute=host_nexthop)
elif parts[0] == 'router': #Parse routers
router_name = parts[1]
router_ip = parts[2]
elements[router_name] = topo.addNode(router_name, cls=MyRouter, ip=router_ip)
elif parts[0] == 'switch': #Parse switches
switch_name = parts[1]
elements[switch_name] = topo.addSwitch(switch_name)
elif parts[0] == 'linkRR': #Parse links routers to routers
router1 = parts[1]
router1_intfName = parts[2]
router1_intfIP = parts[3]
router2 = parts[4]
router2_intfName = parts[5]
router2_intfIP = parts[6]
topo.addLink(elements.get(router1), elements.get(router2), intfName1=router1_intfName, intfName2=router2_intfName, params1={'ip' : router1_intfIP}, params2={'ip' : router2_intfIP})
elif parts[0] == 'linkRH': #Parse links routers to hosts
host = parts[1]
host_intfName = parts[2]
router = parts[3]
router_intfName = parts[4]
router_intfIP = parts[5]
topo.addLink(elements.get(host), elements.get(router), intfName1=host_intfName, intfName2=router_intfName, params2={'ip' : router_intfIP})
elif parts[0] == 'linkRS': #Parse links routers to switches
node1 = parts[1]
node2 = parts[2]
# topo.addLink(node1, node2)
elif parts[0] == 'linkSS': #Parse links switches to switches
node1 = parts[1]
node2 = parts[2]
# topo.addLink(node1, node2)
elif parts[0] == 'linkSH': #Parse links switches to hosts
node1 = parts[1]
node2 = parts[2]
# topo.addLink(node1, node2)
return topo
@ -98,24 +80,19 @@ def run_topology(config_file):
topo = build_topology(config_file)
net = Mininet(topo=topo, link=TCLink)
net.start() #Starting the network
# net.addLink(h1, r1, intfName2='R23', params2={'ip' : '161.46.247.129/26'})
# net.addLink(h2, r1, intfName2='R22', params2={'ip' : '161.46.247.195/27'})
# with open(config_file, 'r') as file: #Search in the configuration file for routing table
# for line in file:
# line = line.strip()
# if line.startswith('#'): #Skip comment
# continue
# parts = line.split(" ")
# if parts[0] == 'route': #Parse routing tables
# name = parts[1]
# pck_src = parts[2]
# pck_nexthop = parts[3]
# interf = parts[4]
# cmd = 'ip route add ' + pck_src + ' via ' + pck_nexthop + ' dev ' + interf
# (net.getNodeByName(name)).cmd(cmd)
with open(config_file, 'r') as file: #Search in the configuration file for routing table
for line in file:
line = line.strip()
if line.startswith('#'): #Skip comment
continue
parts = line.split(" ")
if parts[0] == 'route': #Parse routing tables
name = parts[1]
pck_src = parts[2]
pck_nexthop = parts[3]
interf = parts[4]
cmd = 'ip route add ' + pck_src + ' via ' + pck_nexthop + ' dev ' + interf
(net.getNodeByName(name)).cmd(cmd)
if net.pingAll():
print(Fore.RED + "Network has issues" + Style.RESET_ALL)
else:

53
MininetTEST.py
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@ -0,0 +1,53 @@
import configparser
from colorama import Fore, Style
from mininet.net import Mininet
from mininet.topo import Topo
from mininet.node import Node
from mininet.cli import CLI
from mininet.link import TCLink
from mininet.log import setLogLevel
class MyRouter (Node):
def config(self, **params):
super(MyRouter, self).config(**params)
self.cmd('sysctl net.ipv4.ip_forward=1') #Enable forwarding on the router
def terminate(self):
self.cmd('sysctl net.ipv4.ip_forward=0') #Disable forwarding on the router
super(MyRouter, self).terminate
def build_topology(config_file):
topo = Topo()
elements = {} # Dictionary to store nodes
h4 = topo.addHost('H4', ip='161.46.247.131/26', defaultRoute='via 161.46.247.129')
h3 = topo.addHost('H3', ip='161.46.247.196/27', defaultRoute='via 161.46.247.195')
r1 = topo.addNode('R1', cls=MyRouter, ip='161.46.247.254/30')
r2 = topo.addNode('R2', cls=MyRouter, ip='161.46.247.253/30')
# Ordine importante
topo.addLink(r2, r1, intfName2='R13', intfName1='R21', params2={'ip' : '161.46.247.254/30'}, params1={'ip' : '161.46.247.253/30'})
topo.addLink(r2, h3, intfName2='H31', intfName1='R22', params1={'ip' : '161.46.247.195/27'})
topo.addLink(r2, h4, intfName2='H41', intfName1='R23', params1={'ip' : '161.46.247.129/26'})
return topo
def run_topology(config_file):
setLogLevel('info') #Different logging levels are 'info' 'warning' 'error' 'debug'
topo = build_topology(config_file)
net = Mininet(topo=topo, link=TCLink)
net.start() #Starting the network
(net.getNodeByName('R1')).cmd('ip route add 161.46.247.192/27 via 161.46.247.254 dev R13')
(net.getNodeByName('R1')).cmd('ip route add 161.46.247.128/26 via 161.46.247.254 dev R13')
if net.pingAll():
print(Fore.RED + "Network has issues" + Style.RESET_ALL)
else:
print(Fore.GREEN + "Network working properly" + Style.RESET_ALL)
CLI(net)
net.stop() #Stopping the network
if __name__ == '__main__':
run_topology('MininetTopo.conf')

77
MininetTopo.conf
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@ -1,14 +1,16 @@
######## Set hosts ########
## host name ip defRoute ##
###########################
host h1 161.46.247.131/26 161.46.247.129
host h2 161.46.247.196/27 161.46.247.195
#### Set routers ###
## router name ip ##
####################
router r1 161.46.247.129/26
#router r2 10.2.0.1/24
# L'ordine deve rimanee questo
############# Set hosts #############
## host name intfIP/mask defRoute ###
#####################################
host H4 161.46.247.131/26 161.46.247.129
host H3 161.46.247.196/27 161.46.247.195
######## Set routers ########
## router name intfIP/mask ##
#############################
router R1 161.46.247.254/30
router R2 161.46.247.253/30
## Set switches ##
## switch name ##
@ -16,33 +18,38 @@ router r1 161.46.247.129/26
# switch s1
# switch s2
####### Set links #######
################################################ Set links ################################################
## linkRR router1, router1_intfName, router1_intfIP/mask, router2, router2_intfName, router2_intfIP/mask ##
###########################################################################################################
linkRR R1 R13 161.46.247.254/30 R2 R21 161.46.247.253/30
######################## Set links and router interfaces #####################
## linkRH host, host_intfName, router, router_intfName, router_intfIP/mask ###
##############################################################################
linkRH H3 H31 R2 R22 161.46.247.195/27
linkRH H4 H41 R2 R23 161.46.247.129/26
##################### Set links and router interfaces #####################
## linkRS ##
#####################################################
# linkRS
# linkRS
###### Set links ######
## linkSS switch1, switch2 ##
######################
# linkSS s2 s1
###### Set links ######
## linkSH switch, host ##
#########################
##########
# linkSH s1 h1
# linkSH s1 h2
# linkSH s2 h3
# linkSH s2 h4
######### Set links #########
## linkSS switch1, switch2 ##
#############################
# linkSS s2 s1
##################### Set links #####################
## linkHR host, router, router_intfName, router_ip ##
#####################################################
linkHR h1 r1 R23 161.46.247.129/26
linkHR h2 r1 R22 161.46.247.195/27
######################### Set links #########################
## linkRR router1, router2, intfName1, intfName2, ip1, ip2 ##
#############################################################
# linkRR r1 r2 r1-eth2 r2-eth2 10.0.0.0/31 10.0.0.1/31
############# route table #############
## route name source destRoute interf ##
########################################
# route r1 0.0.0.0/0 10.0.0.1 r1-eth2
# route r2 0.0.0.0/0 10.0.0.0 r2-eth2
################## route table ################
## route name final_destIP/mask nextHop intf ###
################################################
route R1 161.46.247.192/27 161.46.247.254 R13
route R1 161.46.247.128/26 161.46.247.254 R13

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