diff --git a/trellis/trellis.py b/trellis/trellis.py
new file mode 100755
index 0000000..78cdc7b
--- /dev/null
+++ b/trellis/trellis.py
@@ -0,0 +1,139 @@
+#!/usr/bin/python
+
+import sys
+sys.path.append('..')
+from mininet.topo import Topo
+from mininet.net import Mininet
+from mininet.cli import CLI
+from mininet.log import setLogLevel
+from mininet.node import RemoteController, OVSBridge, Host
+from mininet.nodelib import NAT
+from ipaddress import ip_network
+from routinglib import BgpRouter
+from routinglib import RoutedHost
+
+class Trellis( Topo ):
+    "Trellis basic topology"
+
+    def __init__( self, *args, **kwargs ):
+        Topo.__init__( self, *args, **kwargs )
+
+        # Spines
+        s226 = self.addSwitch('s226', dpid='226')
+        s227 = self.addSwitch('s227', dpid='227')
+
+        # Leaves
+        s204 = self.addSwitch('s204', dpid='204')
+        s205 = self.addSwitch('s205', dpid='205')
+
+        # Switch Links
+        self.addLink(s226, s204)
+        self.addLink(s226, s205)
+        self.addLink(s227, s204)
+        self.addLink(s227, s205)
+
+        # NOTE avoid using 10.0.1.0/24 which is the default subnet of quaggas
+        # NOTE avoid using 00:00:00:00:00:xx which is the default mac of host behind upstream router
+        # IPv4 Hosts
+        h1 = self.addHost('h1', cls=DhcpClient, mac='00:aa:00:00:00:01')
+        h2 = self.addHost('h2', cls=DhcpClient, mac='00:aa:00:00:00:02')
+        h3 = self.addHost('h3', cls=DhcpClient, mac='00:aa:00:00:00:03')
+        h4 = self.addHost('h4', cls=DhcpClient, mac='00:aa:00:00:00:04')
+        self.addLink(h1, s204)
+        self.addLink(h2, s204)
+        self.addLink(h3, s205)
+        self.addLink(h4, s205)
+
+        # IPv6 Hosts
+        h1v6 = self.addHost('h1v6', cls=RoutedHost, mac='00:bb:00:00:00:01', ips=['2000::201/120'], gateway='2000::2ff')
+        h2v6 = self.addHost('h2v6', cls=RoutedHost, mac='00:bb:00:00:00:02', ips=['2000::202/120'], gateway='2000::2ff')
+        h3v6 = self.addHost('h3v6', cls=RoutedHost, mac='00:bb:00:00:00:03', ips=['2000::301/120'], gateway='2000::3ff')
+        h4v6 = self.addHost('h4v6', cls=RoutedHost, mac='00:bb:00:00:00:04', ips=['2000::302/120'], gateway='2000::3ff')
+        self.addLink(h1v6, s204)
+        self.addLink(h2v6, s204)
+        self.addLink(h3v6, s205)
+        self.addLink(h4v6, s205)
+
+        # DHCP server
+        dhcp = self.addHost('dhcp', cls=DhcpServer, mac='00:99:00:00:00:01', ips=['10.0.3.253/24'], gateway='10.0.3.254')
+        self.addLink(dhcp, s205)
+
+        # Control plane switch (for quagga fpm)
+        cs0 = self.addSwitch('cs0', cls=OVSBridge)
+
+        # Control plane NAT (for quagga fpm)
+        nat = self.addHost('nat', cls=NAT,
+                           ip='172.16.0.1/12',
+                           subnet=str(ip_network(u'172.16.0.0/12')), inNamespace=False)
+        self.addLink(cs0, nat)
+
+        # Internal Quagga bgp1
+        intfs = {'bgp1-eth0': {'ipAddrs': ['10.0.1.2/24', '2000::102/120'], 'mac': '00:88:00:00:00:02'},
+                 'bgp1-eth1': {'ipAddrs': ['172.16.0.2/12']}}
+        bgp1 = self.addHost('bgp1', cls=BgpRouter,
+                            interfaces=intfs,
+                            quaggaConfFile='./bgpdbgp1.conf',
+                            zebraConfFile='./zebradbgp1.conf')
+        self.addLink(bgp1, s205)
+        self.addLink(bgp1, cs0)
+
+        # External Quagga r1
+        intfs = {'r1-eth0': {'ipAddrs': ['10.0.1.1/24', '2000::101/120'], 'mac': '00:88:00:00:00:01'},
+                 'r1-eth1': {'ipAddrs': ['10.0.99.1/16']},
+                 'r1-eth2': {'ipAddrs': ['2000::9901/120']}}
+        r1 = self.addHost('r1', cls=BgpRouter,
+                            interfaces=intfs,
+                            quaggaConfFile='./bgpdr1.conf')
+        self.addLink(r1, s205)
+
+        # External IPv4 Host behind r1
+        rh1 = self.addHost('rh1', cls=RoutedHost, ips=['10.0.99.2/24'], gateway='10.0.99.1')
+        self.addLink(r1, rh1)
+
+        # External IPv6 Host behind r1
+        rh1v6 = self.addHost('rh1v6', cls=RoutedHost, ips=['2000::9902/120'], gateway='2000::9901')
+        self.addLink(r1, rh1v6)
+
+topos = { 'trellis' : Trellis }
+
+class DhcpClient(Host):
+    def __init__(self, name, *args, **kwargs):
+        super(DhcpClient, self).__init__(name, **kwargs)
+        self.pidFile = '/run/dhclient-%s.pid' % self.name
+
+    def config(self, **kwargs):
+        super(DhcpClient, self).config(**kwargs)
+        self.cmd('ip addr flush dev %s' % self.defaultIntf())
+        self.cmd('dhclient -q -4 -nw -pf %s %s' % (self.pidFile, self.defaultIntf()))
+
+    def terminate(self, **kwargs):
+        self.cmd('kill -9 `cat %s`' % self.pidFile)
+        self.cmd('rm -rf %s' % self.pidFile)
+        super(DhcpClient, self).terminate()
+
+class DhcpServer(RoutedHost):
+    binFile = '/usr/sbin/dhcpd'
+    pidFile = '/run/dhcp-server/dhcpd.pid'
+    configFile = './dhcpd.conf'
+
+    def config(self, **kwargs):
+        super(DhcpServer, self).config(**kwargs)
+        self.cmd('%s -q -4 -pf %s -cf %s %s' % (self.binFile, self.pidFile, self.configFile, self.defaultIntf()))
+
+    def terminate(self, **kwargs):
+        self.cmd('kill -9 `cat %s`' % self.pidFile)
+        self.cmd('rm -rf %s' % self.pidFile)
+        super(DhcpServer, self).terminate()
+
+if __name__ == "__main__":
+    setLogLevel('debug')
+    topo = Trellis()
+
+    net = Mininet(topo=topo, controller=None)
+    net.addController(RemoteController('c0', ip='192.168.56.11'))
+    net.addController(RemoteController('c1', ip='192.168.56.12'))
+    net.addController(RemoteController('c2', ip='192.168.56.13'))
+
+    net.start()
+    CLI(net)
+    net.stop()