def build_network(input_filename):
anm = AbstractNetworkModel()
input_graph = ank.load_graphml(input_filename)
G_in = anm.add_overlay("input", input_graph)
ank.set_node_default(G_in, G_in, platform="netkit")
ank.set_node_default(G_in, G_in, host="nectar1")
if len(ank.unique_attr(G_in, "asn")) > 1:
# Multiple ASNs set, use label format device.asn
anm.set_node_label(".as", ['label', 'asn'])
# set syntax for routers according to platform
G_in.update(G_in.nodes("is_router", platform="junosphere"), syntax="junos")
G_in.update(G_in.nodes("is_router", platform="dynagen"), syntax="ios")
G_in.update(G_in.nodes("is_router", platform="netkit"), syntax="quagga")
G_graphics = anm.add_overlay("graphics") # plotting data
G_graphics.add_nodes_from(G_in, retain=['x', 'y', 'device_type', 'asn'])
build_phy(anm)
build_ip(anm)
build_ospf(anm)
build_bgp(anm)
return anm
