Ubuntu 12.04 desktop 64bit : coreemu

I’m newbie to coreemu.
IMO , I think coreemu seems to be similar to dynamips/GNS3.
coreemu simulates a wide range of network topologies with GUI tool , python script , quagga , hub , switch , PC etc.

- install coreemu

just referred to http://pf.itd.nrl.navy.mil/core/core-html/index.html

# uname –ri 3.2.0-34-generic x86_64 # lsb_release -a No LSB modules are available. Distributor ID: Ubuntu Description:    Ubuntu 12.04.1 LTS Release:        12.04 Codename:       precise

# apt-get install bash bridge-utils ebtables iproute libev-dev libtk-img python tcl8.5 tk8.5 xterm -y

download customized quagga and install it.

# wget http://downloads.pf.itd.nrl.navy.mil/ospf-manet/quagga-0.99.21mr2.2/quagga-mr_0.99.21mr2.2_amd64.deb # dpkg -i quagga-mr_0.99.21mr2.2_amd64.deb

install core for Ubuntu

download core

# wget http://downloads.pf.itd.nrl.navy.mil/core/packages/4.4/core_4.4-0ubuntu1_precise_amd64.deb

on GUI terminal , run the following command.

# software-center /home/user/Downloads/core_4.4-0ubuntu1_amd64.deb

start core daemon.

# /etc/init.d/core start * Starting cored.py

run core GUI

# core

n2 sends icmp packets to n3.
n1 and n3 are router. ( quagga )
n1 is hub.




save configuration.

# cat /root/.core/configs/test.imn node n1 {    type hub    network-config {        hostname n1        !    }    canvas c1    iconcoords {226.0 116.0}    labelcoords {226.0 140.0}    interface-peer {e0 n2}    interface-peer {e1 n3} } node n2 {    type router    model router    network-config {        hostname n2        !        interface eth0         ip address 10.0.0.1/24        !    }    canvas c1    iconcoords {76.0 118.0}    labelcoords {76.0 146.0}    interface-peer {eth0 n1} } node n3 {    type router    model router    network-config {        hostname n3        !        interface eth0         ip address 10.0.0.2/24        !    }    canvas c1    iconcoords {351.0 116.0}    labelcoords {351.0 144.0}    interface-peer {eth0 n1} } link l1 {    nodes {n2 n1}    bandwidth 0 } link l2 {    nodes {n1 n3}    bandwidth 0 } canvas c1 {    name {Canvas1} } option global {    interface_names no    ip_addresses yes    ipv6_addresses yes    node_labels yes    link_labels yes    ipsec_configs yes    exec_errors yes    show_api no    background_images no    annotations yes    grid yes    traffic_start 0 } option session { }

- use python script.

( just referred to http://pf.itd.nrl.navy.mil/core/core-html/scripting.html )

# cat test.py #!/usr/bin/env python from core import pycore session = pycore.Session(persistent=True) node1 = session.addobj(cls=pycore.nodes.CoreNode, name="n1") node2 = session.addobj(cls=pycore.nodes.CoreNode, name="n2") hub1 = session.addobj(cls=pycore.nodes.HubNode, name="hub1") node1.newnetif(hub1, ["10.0.0.1/24"]) node2.newnetif(hub1, ["10.0.0.2/24"]) node1.icmd(["ping", "-c", "5", "10.0.0.2"]) session.shutdown()

n1 ( node1 ) 10.0.0.1 --- hub1 – 10.0.0.2 n2 ( node2 )

n1 sends icmp packets to n2.

# ./test.py PING 10.0.0.2 (10.0.0.2) 56(84) bytes of data. 64 bytes from 10.0.0.2: icmp_req=1 ttl=64 time=0.043 ms 64 bytes from 10.0.0.2: icmp_req=2 ttl=64 time=0.087 ms 64 bytes from 10.0.0.2: icmp_req=3 ttl=64 time=0.030 ms 64 bytes from 10.0.0.2: icmp_req=4 ttl=64 time=0.034 ms 64 bytes from 10.0.0.2: icmp_req=5 ttl=64 time=0.037 ms --- 10.0.0.2 ping statistics --- 5 packets transmitted, 5 received, 0% packet loss, time 3996ms rtt min/avg/max/mdev = 0.030/0.046/0.087/0.021 ms

there are sample python scripts under /usr/share/core/examples/netns/ directory.

# ls /usr/share/core/examples/netns/ basicrange.py        switchgui.py   twonodes.sh howmanynodes.py      switch.py      wlanemanetests.py ospfmanetmdrtest.py  switchtest.py  wlantest.py

- sample imm

root/.core/configs/sample3-bgp.imn


send icmp packets from pc12 to host11.