node n0 {
    type host
    network-config {
	hostname host1
	!
	interface eth1
	 ip address 172.16.2.254/24
	!
	interface eth0
	 ip address 172.16.1.254/24
	!
	interface lo0
	 type lo
	 ip address 127.0.0.1/8
	 ipv6 address ::1/128
	!
    }
    auto_default_routes enabled
    canvas c0
    iconcoords {432 72}
    labelcoords {432 108}
    interface-peer {eth0 n1}
    interface-peer {eth1 n2}
}

node n1 {
    type lanswitch
    network-config {
	hostname switch1
	!
    }
    canvas c0
    iconcoords {264 216}
    labelcoords {264 239}
    interface-peer {e0 n0}
    interface-peer {e1 n3}
    interface-peer {e2 n4}
}

node n2 {
    type lanswitch
    network-config {
	hostname switch2
	!
    }
    canvas c0
    iconcoords {600 216}
    labelcoords {600 239}
    interface-peer {e0 n0}
    interface-peer {e1 n5}
    interface-peer {e2 n6}
}

node n3 {
    type pc
    network-config {
	hostname pc1
	!
	interface eth0
	 ip address 172.16.1.1/24
	!
	interface lo0
	 type lo
	 ip address 127.0.0.1/8
	 ipv6 address ::1/128
	!
    }
    auto_default_routes enabled
    canvas c0
    iconcoords {120 360}
    labelcoords {120 391}
    interface-peer {eth0 n1}
}

node n4 {
    type pc
    network-config {
	hostname pc2
	!
	interface eth0
	 ip address 172.16.1.2/24
	!
	interface lo0
	 type lo
	 ip address 127.0.0.1/8
	 ipv6 address ::1/128
	!
    }
    auto_default_routes enabled
    canvas c0
    iconcoords {408 360}
    labelcoords {408 391}
    interface-peer {eth0 n1}
}

node n5 {
    type pc
    network-config {
	hostname pc3
	!
	interface eth0
	 ip address 172.16.2.1/24
	!
	interface lo0
	 type lo
	 ip address 127.0.0.1/8
	 ipv6 address ::1/128
	!
    }
    auto_default_routes enabled
    canvas c0
    iconcoords {504 360}
    labelcoords {504 391}
    interface-peer {eth0 n2}
}

node n6 {
    type pc
    network-config {
	hostname pc4
	!
	interface eth0
	 ip address 172.16.2.2/24
	!
	interface lo0
	 type lo
	 ip address 127.0.0.1/8
	 ipv6 address ::1/128
	!
    }
    auto_default_routes enabled
    canvas c0
    iconcoords {744 360}
    labelcoords {744 391}
    interface-peer {eth0 n2}
}

link l0 {
    nodes {n1 n0}
    bandwidth 0
}

link l1 {
    nodes {n2 n0}
    bandwidth 0
}

link l2 {
    nodes {n1 n3}
    bandwidth 0
}

link l3 {
    nodes {n1 n4}
    bandwidth 0
}

link l4 {
    nodes {n2 n5}
    bandwidth 0
}

link l5 {
    nodes {n6 n2}
    bandwidth 0
}

canvas c0 {
    name {Canvas0}
}

option show {
    interface_names yes
    ip_addresses yes
    ipv6_addresses yes
    node_labels yes
    link_labels yes
    background_images no
    annotations yes
    hostsAutoAssign no
    grid yes
    iconSize normal
    zoom 1.0
}