# Router C
router_c = network.Router(name='C',
intf_count=len(table_C),
max_queue_size=router_queue_size,
routing_table=table_C)
object_L.append(router_c)
# Router D
router_d = network.Router(name='D',
intf_count=len(table_D),
max_queue_size=router_queue_size,
routing_table=table_D)
object_L.append(router_d)
#create a Link Layer to keep track of links between network nodes
link_layer = link.LinkLayer()
object_L.append(link_layer)
#add all the links
#link parameters: from_node, from_intf_num, to_node, to_intf_num, mtu
link_layer.add_link(link.Link(client1, 0, router_a, 0, 50))
link_layer.add_link(link.Link(client2, 0, router_a, 1, 50))
# Router A links to next object
link_layer.add_link(link.Link(router_a, 0, router_b, 0, 50))
link_layer.add_link(link.Link(router_a, 1, router_c, 0, 50))
# Router B links to next object
link_layer.add_link(link.Link(router_b, 0, router_d, 0, 30))
# Router C links to next object
routing_table_b = {3: 0, 4: 0}
router_b = network_3.Router(routing_table_b, name='B', intf_count=1, max_queue_size=router_queue_size)
object_L.append(router_b)
routing_table_c = {3: 0, 4: 0}
router_c = network_3.Router(routing_table_c, name='C', intf_count=1, max_queue_size=router_queue_size)
object_L.append(router_c)
routing_table_d = {3: 0, 4: 1}
router_d = network_3.Router(routing_table_d, name='D', intf_count=2, max_queue_size=router_queue_size)
object_L.append(router_d)
host_3 = network_3.Host(3)
object_L.append(host_3)
host_4 = network_3.Host(4)
object_L.append(host_4)
# create a Link Layer to keep track of links between network nodes
link_layer = link_3.LinkLayer()
object_L.append(link_layer)
# add all the links
# link parameters: from_node, from_intf_num, to_node, to_intf_num, mtu
# out interface of client, in interface of server
# 50 is the MTU - largest size of packet that can be transferred over links
link_layer.add_link(link_3.Link(host_1, 0, router_a, 0, 50))
link_layer.add_link(link_3.Link(host_2, 0, router_a, 1, 50))
link_layer.add_link(link_3.Link(router_a, 0, router_b, 0, 50))
link_layer.add_link(link_3.Link(router_a, 1, router_c, 0, 50))
link_layer.add_link(link_3.Link(router_b, 0, router_d, 0, 50))
link_layer.add_link(link_3.Link(router_c, 0, router_d, 1, 50))
link_layer.add_link(link_3.Link(router_d, 0, host_3, 0, 50))
link_layer.add_link(link_3.Link(router_d, 1, host_4, 0, 50))
