# if receive something from RB/C (label 4) transmit to H3
decap_tbl_D = {'4': 'H3'}
router_d = Router(name='RD',
intf_capacity_L=[500, 500, 500],
encap_tbl_D=encap_tbl_D,
frwd_tbl_D=frwd_tbl_D,
decap_tbl_D=decap_tbl_D,
max_queue_size=router_queue_size)
object_L.append(router_d)
#create a Link Layer to keep track of links between network nodes
link_layer = LinkLayer()
object_L.append(link_layer)
#add all the links - need to reflect the connectivity in cost_D tables above
link_layer.add_link(Link(host_1, 0, router_a,
0)) # host to router a connections
link_layer.add_link(Link(host_2, 0, router_a, 1))
link_layer.add_link(Link(router_a, 2, router_b,
0)) # router a to router b connections
link_layer.add_link(Link(router_a, 3, router_c,
0)) # router a to router b connections
link_layer.add_link(Link(router_b, 1, router_d, 0)) # router b to router d
link_layer.add_link(Link(router_c, 1, router_d, 1)) # router c to router d
link_layer.add_link(Link(router_d, 2, host_3, 0)) # host 3 to router d
#start all the objects
thread_L = []
for obj in object_L:
thread_L.append(threading.Thread(name=obj.__str__(), target=obj.run))
for t in thread_L:
decap_tbl_D = {('15', 0): 2, ('18', 1): 2} # table used to decapsulate network packets from MPLS frames {(in label, in interface): out interface}
router_d = Router(name='RD',
intf_capacity_L=[500,100,500],
encap_tbl_D = encap_tbl_D,
frwd_tbl_D = frwd_tbl_D,
decap_tbl_D = decap_tbl_D,
max_queue_size=router_queue_size)
object_L.append(router_d)
#create a Link Layer to keep track of links between network nodes
link_layer = LinkLayer()
object_L.append(link_layer)
#add all the links - need to reflect the connectivity in cost_D tables above
link_layer.add_link(Link(host_1, 0, router_a, 0))
link_layer.add_link(Link(host_2, 0, router_a, 1))
link_layer.add_link(Link(router_a, 2, router_b, 0))
link_layer.add_link(Link(router_a, 3, router_c, 0))
link_layer.add_link(Link(router_b, 1, router_d, 0))
link_layer.add_link(Link(router_c, 1, router_d, 1))
link_layer.add_link(Link(router_d, 2, host_3, 0))
#start all the objects
thread_L = []
for obj in object_L:
thread_L.append(threading.Thread(name=obj.__str__(), target=obj.run))
for t in thread_L:
t.start()
frwd_tbl_D = {0:1, 1:1}
decap_tbl_D = {0:{0:1}, 2:{1:1}}
router_D = Router(name='RD',
intf_capacity_L=[500,500,500],
encap_tbl_D = encap_tbl_D,
frwd_tbl_D = frwd_tbl_D,
decap_tbl_D = decap_tbl_D,
max_queue_size=router_queue_size)
object_L.append(router_D)
#create a Link Layer to keep track of links between network nodes
link_layer = LinkLayer()
object_L.append(link_layer)
#add all the links - need to reflect the connectivity in cost_D tables above
link_layer.add_link(Link(host_1, 0, router_a, 0))
link_layer.add_link(Link(host_2, 0, router_a, 2))
link_layer.add_link(Link(router_a, 1, router_b, 0))
link_layer.add_link(Link(router_a, 3, router_C, 0))
link_layer.add_link(Link(router_b, 1, router_D, 0))
link_layer.add_link(Link(router_C, 1, router_D, 2))
link_layer.add_link(Link(router_D, 1, host_3, 0))
#start all the objects
thread_L = []
for obj in object_L:
thread_L.append(threading.Thread(name=obj.__str__(), target=obj.run))
for t in thread_L:
t.start()