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Lab Task by #26 Robust ECN group- 15CO218, 15CO241, 15CO240 #20

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Lab Task by #26 Robust ECN group- 15CO218, 15CO241, 15CO240 #20

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134 changes: 134 additions & 0 deletions icmpv6-redirect.py
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#/* -*- Mode: Python; -*- */
#/*
# * Copyright (c) 2017 NITK Surathkal
# *
# * This program is free software; you can redistribute it and/or modify
# * it under the terms of the GNU General Public License version 2 as
# * published by the Free Software Foundation;
# *
# * This program is distributed in the hope that it will be useful,
# * but WITHOUT ANY WARRANTY; without even the implied warranty of
# * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
# * GNU General Public License for more details.
# *
# * You should have received a copy of the GNU General Public License
# * along with this program; if not, write to the Free Software
# * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
# *
# * Ported to Python by: Akshay Anandrao Honrao <[email protected]>
# */


# Network topology
#
# STA2
# |
# |
# R1 R2
# | |
# | |
# ------------
# |
# |
# STA 1
#
# - Initial configuration :
# - STA1 default route : R1
# - R1 static route to STA2 : R2
# - STA2 default route : R2
# - STA1 send Echo Request to STA2 using its default route to R1
# - R1 receive Echo Request from STA1, and forward it to R2
# - R1 send an ICMPv6 Redirection to STA1 with Target STA2 and Destination R2
# - Next Echo Request from STA1 to STA2 are directly sent to R2


import ns.network
import ns.core
import ns.applications
import ns.internet
import ns.internet_apps
import ns.csma
import sys

cmd = ns.core.CommandLine()
cmd.AddValue ("verbose", "turn on log components")
cmd.Parse(sys.argv)

if verbose == "True":
ns.core.LogComponentEnable("Icmpv6RedirectExample", ns.core.LOG_LEVEL_INFO)
ns.core.LogComponentEnable("Icmpv6L4Protocol", ns.core.LOG_LEVEL_INFO)
ns.core.LogComponentEnable("Ipv6L3Protocol", ns.core.LOG_LEVEL_ALL)
ns.core.LogComponentEnable("Ipv6StaticRouting", ns.core.LOG_LEVEL_ALL)
ns.core.LogComponentEnable("Ipv6Interface", ns.core.LOG_LEVEL_ALL)
ns.core.LogComponentEnable("Icmpv6L4Protocol", ns.core.LOG_LEVEL_ALL)
ns.core.LogComponentEnable("NdiscCache", ns.core.LOG_LEVEL_ALL)

print "Creat nodes."
stal = ns.nodes.CreatObject()
r1 = ns.nodes.CreatObject()
r2 = ns.nodes.CreatObject()
sta2 = ns.nodes.CreatObject()

net1 = ns.network.NodeContainer(stal, r1, r2)
net2 = ns.network.NodeContainer(r2, sta2)
all1 = ns.network.NodeContainer(stal, r1, r2, sta2) #all is python keyword hence all1 is used instead of all.

internetv6 = ns.internet.InternetStackHelper()
internetv6.Install(all1)

print "Create channels."
csma = ns.csma.CsmaHelper()
csma.SetChannelAttribute("DataRate", ns.core.DataRateValue (5000000))
csma.SetChannelAttribute("Delay", ns.core.TimeValue(ns.core.MilliSeconds(6560)))
ndc1 = csma.Install(net1)
ndc2 = csma.Install(net2)

print "Assign IPv6 Addresses."
ipv6 = ns.internet.Ipv6AddressHelper()

ipv6.SetBase (ns.network.Ipv6Address ("2001:1::"), ns.network.Ipv6Prefix (64))
iic1 = ipv6.Assign (ndc1)
iic1.SetForwarding (2, True)
iic1.SetForwarding (1, True)
iic1.SetDefaultRouteInAllNodes (1)

ipv6.SetBase (ns.network.Ipv6Address ("2001:2::"), ns.network.Ipv6Prefix (64))
iic2 = ipv6.Assign (ndc2)
iic2.SetForwarding (0, True)
iic1.SetDefaultRouteInAllNodes (0)

routingHelper = ns.internet.Ipv6StaticRoutingHelper()

# manually inject a static route to the second router.
routing = ns.internet.Ipv6StaticRouting()
routing = routingHelper.GetStaticRouting (r1.GetObject())
routing.AddHostRouteTo (iic2.GetAddress (1, 1), iic1.GetAddress (2, 0), iic1.GetInterfaceIndex (1))

routingStream = ns.internet.OutputStreamWrapper()
routingHelper.PrintRoutingTableAt (ns.core.Seconds (0.0), r1, routingStream)
routingHelper.PrintRoutingTableAt (ns.core.Seconds (3.0), sta1, routingStream)

print "Create Applications."
cmd.packetSize = 1024
cmd.maxPacketCount = 5
interPacketInterval = ns.core.Seconds (1.)
ping6 = ns.applications.Ping6Helper()

ping6.SetLocal (iic1.GetAddress (0, 1))
ping6.SetRemote (iic2.GetAddress (1, 1))
ping6.SetAttribute ("MaxPackets", ns.core.UintegerValue (maxPacketCount))
ping6.SetAttribute ("Interval", ns.core.TimeValue (interPacketInterval))
ping6.SetAttribute ("PacketSize", ns.core.UintegerValue (packetSize))
apps = ns.network.ApplicationContainer()
apps = ping6.Install(stal)
apps.Start (ns.core.Seconds (2.0))
apps.Stop (ns.core.Seconds (10.0))

Ascii = ns.internet.AsciiTraceHelper()
csma.EnableAsciiAll (Ascii.CreateFileStream ("icmpv6-redirect.tr"))
csma.EnablePcapAll ("icmpv6-redirect", True)

print "Run Simulation."
ns.core.Simulator.Run ()
ns.core.Simulator.Destroy ()
print "Done."
157 changes: 157 additions & 0 deletions radvd.py
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#/* -*- Mode: Python; -*- */
#/*
#* Copyright (c) 2017 NITK Surathkal
#*
# * This program is free software; you can redistribute it and/or modify
#* it under the terms of the GNU General Public License version 2 as
#* published by the Free Software Foundation;
#*
#* This program is distributed in the hope that it will be useful,
#* but WITHOUT ANY WARRANTY; without even the implied warranty of
#* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
#* GNU General Public License for more details.
#*
#* You should have received a copy of the GNU General Public License
#* along with this program; if not, write to the Free Software
#* Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
#*
#* Ported to Python by: Ritwick Mishra <[email protected]>
#*
#*/

#// Network topology
#// //
#// // n0 R n1
#// // | _ |
#// // ====|_|====
#// // router
#// // - R sends RA to n0's subnet (2001:1::/64);
#// // - R sends RA to n1's subnet (2001:2::/64);
#// // - n0 ping6 n1.
#// //
#// // - Tracing of queues and packet receptions to file "radvd.tr"



import ns.core
import ns.internet
import ns.applications
import ns.radvd
import ns.csma


print "RadvdExample"

verbose = False

cmd. ns.core.CommandLine
cmd.AddValue ("verbose", "turn on log components")
cmd.Parse (sys.argv)
if verbose:

ns.core.LogComponentEnable ("Ipv6L3Protocol", ns.core.LOG_LEVEL_ALL)
ns.core.LogComponentEnable ("Ipv6RawSocketImpl", ns.core.LOG_LEVEL_ALL)
ns.core.LogComponentEnable ("Icmpv6L4Protocol", ns.core.LOG_LEVEL_ALL)
LogComponentEnable ("Ipv6StaticRouting", ns.core.LOG_LEVEL_ALL)
LogComponentEnable ("Ipv6Interface", ns.core.LOG_LEVEL_ALL)
LogComponentEnable ("RadvdApplication", ns.core.LOG_LEVEL_ALL)
LogComponentEnable ("Ping6Application", ns.core.LOG_LEVEL_ALL)

print "Create nodes."
n0 = ns.network.CreateObject<Node> ()
r = ns.network.CreateObject<Node> ()
n1 = ns.network.CreateObject<Node> ()

net1 = ns.network.NodeContainer(n0, r)
net2 = ns.network.NodeContainer(r, n1)
allnet = ns.network.NodeContainer(n0, r, n1) # allnet is like all in cpp program

print "Create IPv6 Internet Stack"
internetv6 = ns.internet.InternetStackHelper()
internetv6.Install(all)

print "Create channels."
csma = ns.csma.CsmaHelper()
csma.SetChannelAttribute ("DataRate", DataRateValue (5000000))
csma.SetChannelAttribute ("Delay", TimeValue (MilliSeconds (2)))
d1 = csma.Install (net1) #/* n0 - R */
d2 = csma.Install (net2) #/* R - n1 */

print "Create networks and assign IPv6 Addresses."
ipv6 = ns.internet.Ipv6AddressHelper;

#/* first subnet */
ipv6.SetBase (ns.network.Ipv6Address ("2001:1::"), ns.network.Ipv6Prefix (64))
tmp = ns.network.NetDeviceContainer()
tmp.Add (d1.Get (0)) #/* n0 */
iic1 = ns.internet.Ipv6InterfaceContainer()
iic1 = ipv6.AssignWithoutAddress (tmp) #/* n0 interface */

tmp2 = ns.network.NetDeviceContainer()
tmp2.Add (d1.Get (1)) #/* R */
iicr1 = ns.internet.Ipv6InterfaceContainer()
iicr1 = ipv6.Assign (tmp2) #/* R interface to the first subnet is just statically assigned */
iicr1.SetForwarding (0, True)
iic1.Add (iicr1)
#/* second subnet R - n1 */
ipv6.SetBase (ns.network.Ipv6Address ("2001:2::"), ns.network.Ipv6Prefix (64))

tmp3 = ns.network.NetDeviceContainer()
tmp3.Add (d2.Get (0)); #/* R */
iicr2 = ns.internet.Ipv6InterfaceContainer()
iicr2 = ipv6.Assign (tmp3)#/* R interface */
iicr2.SetForwarding (0, True)

tmp4 = ns.network.NetDeviceContainer()
tmp4.Add (d2.Get (1)) #/* n1 */
iic2 = ns.internet.Ipv6InterfaceContainer()
iic2 = ipv6.AssignWithoutAddress (tmp4)
iic2.Add (iicr2)

#/* radvd configuration */
radvdHelper = ns.applications.RadvdHelper ()

#/* R interface (n0 - R) */
#/* n0 will receive unsolicited (periodic) RA */
radvdHelper.AddAnnouncedPrefix (iic1.GetInterfaceIndex (1), ns.network.Ipv6Address("2001:1::0"), 64)

#/* R interface (R - n1) */
#/* n1 will have to use RS, as RA are not sent automatically */
radvdHelper.AddAnnouncedPrefix(iic2.GetInterfaceIndex (1), ns.network.Ipv6Address("2001:2::0"), 64)
radvdHelper.GetRadvdInterface (iic2.GetInterfaceIndex (1)).SetSendAdvert (False)

radvdApps = ns.network.ApplicationContainer()
radvdApps = radvdHelper.Install (r)
radvdApps.Start (ns.coreSeconds (1.0))
radvdApps.Stop (Seconds (10.0))

#* Create a Ping6 application to send ICMPv6 echo request from n0 to n1 via R */
packetSize = 1024
maxPacketCount = 5
interPacketInterval = Time()
interPacketInterval = Seconds (1.)
ping6 = ns.applications.Ping6Helper()

#/* ping6.SetLocal (iic1.GetAddress (0, 1)); */
ping6.SetRemote (ns.network.Ipv6Address ("2001:2::200:ff:fe00:4")) #/* should be n1 address after autoconfiguration */
ping6.SetIfIndex (iic1.GetInterfaceIndex (0))

ping6.SetAttribute ("MaxPackets", UintegerValue (maxPacketCount))
ping6.SetAttribute ("Interval", TimeValue (interPacketInterval))
ping6.SetAttribute ("PacketSize", UintegerValue (packetSize))
apps = ns.network.ApplicationContainer()
apps = ping6.Install (net1.Get (0))
apps.Start (Seconds (2.0))
apps.Stop (Seconds (7.0))

Ascii = ns.applications.AsciiTraceHelper ()
csma.EnableAsciiAll (Ascii.CreateFileStream ("radvd.tr"))
csma.EnablePcapAll ("radvd", True)

print ("Run Simulation.")
ns.core.Simulator.Run ()
ns.core.Simulator.Destroy ()
print ("Done.")



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