def getCarrierTopo(params, increment_port_ids=False):
"""
Construct the core network and add PoPs with their parameters.
params is a list of dictionaries with PoP data:
'Retail': (BNAS, RCpb, RCT)
'Business': (PE, BCpb, BCT)
'CloudNFV': (CL,CH,SE,SAN_bw,SAN_sto,NF_types,SE_cores,SE_mem,SE_sto,
CL_bw, CH_links)
WARNING: using this function with increment_port_ids=True this function is not
thread safe, because it uses global variable then!
"""
# This initializes the random generator always to the same value, so the
# returned index sequence, and thus the network parameters will be generated
# always the same (we want a fixed network environment)
# The generated identifiers are still different between genereations, but
# those does not influence the mapping process
random.seed(0)
popcnt = 0
nffg = NFFG(id="CarrierTopo")
p = increment_port_ids
backbone_res = {'cpu': 0, 'mem': 0, 'storage': 0, 'delay': 0.5,
'bandwidth': 1000, 'infra_type': NFFG.TYPE_INFRA_SDN_SW}
bn0 = nffg.add_infra(id=getName("bn"), **backbone_res)
bn1 = nffg.add_infra(id=getName("bn"), **backbone_res)
bn2 = nffg.add_infra(id=getName("bn"), **backbone_res)
bn3 = nffg.add_infra(id=getName("bn"), **backbone_res)
nffg.add_undirected_link(add_port(bn0, p), add_port(bn1, p), bandwidth=1000,
delay=10)
nffg.add_undirected_link(add_port(bn1, p), add_port(bn2, p), bandwidth=1000,
delay=10)
nffg.add_undirected_link(add_port(bn2, p), add_port(bn3, p), bandwidth=1000,
delay=10)
nffg.add_undirected_link(add_port(bn3, p), add_port(bn0, p), bandwidth=1000,
delay=10)
backbones = (bn0, bn1, bn2, bn3)
bnlen = len(backbones)
for popdata in params:
tmp = []
tmp.extend(popdata['Retail'])
tmp.extend(popdata['Business'])
tmp.extend(popdata['CloudNFV'])
addPoP(nffg, popcnt, backbones[popcnt%bnlen], backbones[(popcnt+1)%bnlen],
p, *tmp)
popcnt += 1
"""
# BNAS,RCpb, RCT, PE,BCpb, BCT, CL,CH,SE, SAN_bw,
addPoP(nffg, bn2, bn3, 2, 10000, 0.2, 2, 4000, 0.2, 2, 8, 8, 160000,
# SAN_sto,NF_types, SE_cores, SE_mem, SE_sto, CL_bw, CH_links
100000, ['A','B'], [8,12,16], [32000,64000], [150], 40000, 4)
# BNAS, RCpb, RCT, PE,BCpb, BCT, CL,CH, SE, SAN_bw,
addPoP(nffg, bn1, bn2, 10, 40000, 0.2, 8, 4000, 0.2, 4, 40, 8, 160000,
# SAN_sto,NF_types, SE_cores, SE_mem, SE_sto,
100000, ['A','B','C','D','E'],[8,12,16], [32000,64000], [150,200],
# CL_bw, CH_links
80000, 8)
"""
log.debug("Carrier topology construction finished!")
return nffg
def getSNDlib_dfn_gwin(save_to_file = False):
"""
Topology taken from SNDlib, dfn-gwin.
"""
random.seed(0)
gwin = nx.read_gml("dfn-gwin.gml")
nffg = NFFG(id="dfn-gwin")
nf_types = list(string.ascii_uppercase)[:10]
switch = {'cpu': 0, 'mem': 0, 'storage': 0, 'delay': 0.5,
'bandwidth': 40000, 'infra_type': NFFG.TYPE_INFRA_SDN_SW}
infrares = {'cpu': 400, 'mem': 320000, 'storage': 1500, 'delay': 1.0,
'bandwidth': 40000, 'infra_type': NFFG.TYPE_INFRA_EE}
corelinkres = {'bandwidth': 10000, 'delay': 1.0}
aggrlinkres = {'bandwidth': 1000, 'delay': 5.0}
acclinkres = {'bandwidth': 100, 'delay': 1.0}
gwinnodes = []
for n in gwin.nodes_iter():
gwinnodes.append(n.rstrip('.'))
# get topology from dfn-gwin
for n in gwinnodes:
nffg.add_infra(id=n, **switch)
for i,j in gwin.edges_iter():
nffg.add_undirected_link(nffg.network.node[i.rstrip('.')].add_port(),
nffg.network.node[j.rstrip('.')].add_port(),
**corelinkres)
nodeset1 = random.sample(gwinnodes, 3)
nodeset1.extend(random.sample(gwinnodes, 3))
# add cloud nodes to 6 random nodes.
for n in nodeset1:
infra = nffg.add_infra(id=getName(n+"Host"), **infrares)
infra.add_supported_type(random.sample(nf_types, 6))
nffg.add_undirected_link(nffg.network.node[n].add_port(), infra.add_port(),
**corelinkres)
nodeset2 = random.sample(gwinnodes, 3)
nodeset2.extend(random.sample(gwinnodes, 3))
# add access switched to 6 random nodes
for n in nodeset2:
sw = nffg.add_infra(id=getName(n+"Sw"), **switch)
nffg.add_undirected_link(nffg.network.node[n].add_port(), sw.add_port(),
**aggrlinkres)
for i in xrange(0,random.randint(3,4)):
nameid = getName(n+"SAP")
sap = nffg.add_sap(id=nameid, name=nameid)
nffg.add_undirected_link(sap.add_port(), sw.add_port(), **acclinkres)
# save it to file
if save_to_file:
augmented_gwin = nx.MultiDiGraph()
augmented_gwin.add_nodes_from(nffg.network.nodes_iter())
augmented_gwin.add_edges_from(nffg.network.edges_iter())
nx.write_gml(augmented_gwin, "augmented-dfn-gwin.gml")
return nffg
def _testNetworkForBacktrack():
nffg = NFFG(id="backtracktest", name="backtrack")
sap1 = nffg.add_sap(name="SAP1", id="sap1")
sap2 = nffg.add_sap(name="SAP2", id="sap2")
uniformnoderes = {
'cpu': 5,
'mem': 5,
'storage': 5,
'delay': 0.4,
'bandwidth': 5500
}
infra0 = nffg.add_infra(id="node0", name="INFRA0", **uniformnoderes)
uniformnoderes2 = {
'cpu': 9,
'mem': 9,
'storage': 9,
'delay': 0.4,
'bandwidth': 5500
}
infra1 = nffg.add_infra(id="node1", name="INFRA1", **uniformnoderes2)
swres = {
'cpu': 0,
'mem': 0,
'storage': 0,
'delay': 0.0,
'bandwidth': 10000
}
sw = nffg.add_infra(id="sw", name="sw1", **swres)
infra0.add_supported_type(['A'])
infra1.add_supported_type(['A'])
unilinkres = {'delay': 0.0, 'bandwidth': 2000}
nffg.add_undirected_link(sap1.add_port(0), infra0.add_port(0),
**unilinkres)
nffg.add_undirected_link(sap2.add_port(0), infra1.add_port(0),
**unilinkres)
rightlink = {'delay': 10.0, 'bandwidth': 2000}
leftlink = {'delay': 0.01, 'bandwidth': 5000}
nffg.add_link(infra0.add_port(1), sw.add_port(0), id="n0sw", **rightlink)
nffg.add_link(sw.add_port(1), infra1.add_port(1), id="swn1", **rightlink)
nffg.add_link(sw.ports[0], infra0.ports[1], id="swn0", **leftlink)
nffg.add_link(infra1.ports[1], sw.ports[1], id="n1sw", **leftlink)
return nffg
def getPicoTopo():
"""
Not carrier style topo. Few nodes with big resources.
"""
random.seed(0)
nffg = NFFG(id="SmallExampleTopo")
switch = {'cpu': 0, 'mem': 0, 'storage': 0, 'delay': 0.5,
'bandwidth': 1000, 'infra_type': NFFG.TYPE_INFRA_SDN_SW}
sw = nffg.add_infra(id = getName("sw"), **switch)
infra = {'cpu': 400, 'mem': 320000, 'storage': 1500, 'delay': 1.0,
'bandwidth': 10000, 'infra_type': NFFG.TYPE_INFRA_EE}
linkres = {'bandwidth': 1000, 'delay': 0.5}
inf1 = nffg.add_infra(id = getName("infra"), **infra)
inf0 = inf1
inf1.add_supported_type(list(string.ascii_uppercase)[:10])
for i in range(0,4):
if i == 3:
inf2 = inf0
else:
inf2 = nffg.add_infra(id = getName("infra"), **infra)
inf2.add_supported_type(list(string.ascii_uppercase)[:10])
nameid = getName("sap")
sap = nffg.add_sap(id = nameid, name = nameid)
# add links
nffg.add_undirected_link(sw.add_port(), inf2.add_port(), **linkres)
nffg.add_undirected_link(inf1.add_port(), inf2.add_port(), **linkres)
nffg.add_undirected_link(inf2.add_port(), sap.add_port(), **linkres)
inf1 = inf2
return nffg
def _constructExampleNetwork():
nffg = NFFG(id="BME-net-001")
uniformnoderes = {
'cpu': 5,
'mem': 5,
'storage': 5,
'delay': 0.9,
'bandwidth': 5500
}
infra0 = nffg.add_infra(id="node0", name="INFRA0", **uniformnoderes)
uniformnoderes['cpu'] = None
infra1 = nffg.add_infra(id="node1", name="INFRA1", **uniformnoderes)
uniformnoderes['mem'] = None
infra2 = nffg.add_infra(id="node2", name="INFRA2", **uniformnoderes)
uniformnoderes['storage'] = None
switch = nffg.add_infra(id="sw0",
name="FastSwitcher",
delay=0.01,
bandwidth=10000)
infra0.add_supported_type('A')
infra1.add_supported_type(['B', 'C'])
infra2.add_supported_type(['A', 'B', 'C'])
sap0 = nffg.add_sap(name="SAP0", id="sap0innet")
sap1 = nffg.add_sap(name="SAP1", id="sap1innet")
unilinkres = {'delay': 1.5, 'bandwidth': 2000}
# Infra links should be undirected, according to the currnet NFFG model
# Infra link model is full duplex now.
nffg.add_undirected_link(sap0.add_port(0), infra0.add_port(0),
**unilinkres)
nffg.add_undirected_link(sap1.add_port(0), infra1.add_port(0),
**unilinkres)
nffg.add_undirected_link(infra1.add_port(1), infra0.add_port(2),
**unilinkres)
unilinkres['bandwidth'] = None
nffg.add_undirected_link(infra0.add_port(1), infra2.add_port(0),
**unilinkres)
nffg.add_undirected_link(infra1.add_port(2), infra2.add_port(1),
**unilinkres)
unilinkres['delay'] = 0.2
unilinkres['bandwidth'] = 5000
nffg.add_undirected_link(switch.add_port(0), infra0.add_port(3),
**unilinkres)
unilinkres['delay'] = None
nffg.add_undirected_link(switch.add_port(1), infra1.add_port(3),
**unilinkres)
nffg.add_undirected_link(switch.add_port(2), infra2.add_port(2),
**unilinkres)
# test VNF mapping removal, and resource update in the substrate NFFG
nf4 = nffg.add_nf(id="NF4inNet",
name="NetFunc4",
func_type='B',
cpu=1,
mem=1,
storage=1,
bandwidth=100,
delay=50)
nffg.add_undirected_link(infra1.add_port(3), nf4.add_port(0), dynamic=True)
nffg.add_undirected_link(infra1.add_port(4), nf4.add_port(1), dynamic=True)
return nffg
def _constructExampleRequest():
nffg = NFFG(id="BME-req-001")
sap0 = nffg.add_sap(name="SAP0", id="sap0")
sap1 = nffg.add_sap(name="SAP1", id="sap1")
# add NF requirements.
# Note: storage is used now for the first time, it comes in with the
# NodeResource class
# Note: internal latency is only forwarded to lower layer
# Note: internal bw is untested yet, even before the NFFG support
nf0 = nffg.add_nf(id="NF0",
name="NetFunc0",
func_type='A',
cpu=2,
mem=2,
storage=2,
bandwidth=100)
nf1 = nffg.add_nf(id="NF1",
name="NetFunc1",
func_type='B',
cpu=1.5,
mem=1.5,
storage=1.5,
delay=50)
nf2 = nffg.add_nf(id="NF2",
name="NetFunc2",
func_type='C',
cpu=3,
mem=3,
storage=3,
bandwidth=500)
nf3 = nffg.add_nf(id="NF3",
name="NetFunc3",
func_type='A',
cpu=2,
mem=2,
storage=2,
bandwidth=100,
delay=50)
nf4 = nffg.add_nf(id="NF4",
name="NetFunc4",
func_type='C',
cpu=0,
mem=0,
storage=0,
bandwidth=500)
# directed SG links
# flowclass default: None, meaning: match all traffic
# some agreement on flowclass format is required.
nffg.add_sglink(sap0.add_port(0), nf0.add_port(0))
nffg.add_sglink(nf0.add_port(1), nf1.add_port(0), flowclass="HTTP")
nffg.add_sglink(nf1.add_port(1), nf2.add_port(0), flowclass="HTTP")
nffg.add_sglink(nf2.add_port(1), sap1.add_port(1))
nffg.add_sglink(nf0.add_port(2), nf3.add_port(0), flowclass="non-HTTP")
nffg.add_sglink(nf3.add_port(1), nf2.add_port(2), flowclass="non-HTTP")
nffg.add_sglink(nf1.add_port(2), nf4.add_port(0), flowclass="index.com")
nffg.add_sglink(nf4.add_port(1), nf2.add_port(3), flowclass="index.com")
# add EdgeReqs
nffg.add_req(sap0.ports[0], sap1.ports[1], delay=40, bandwidth=1500)
nffg.add_req(nf1.ports[1], nf2.ports[0], delay=3.5)
nffg.add_req(nf3.ports[1], nf2.ports[2], bandwidth=500)
nffg.add_req(sap0.ports[0], nf0.ports[0], delay=3.0)
# force collocation of NF0 and NF3
# nffg.add_req(nf0.ports[2], nf3.ports[0], delay=1.0)
# not SAP-to-SAP requests are not taken into account yet, these are ignored
nffg.add_req(nf0.ports[1], nf2.ports[0], delay=1.0)
# test Infra node removal from the request NFFG
infra1 = nffg.add_infra(id="BiS-BiS1")
infra2 = nffg.add_infra(id="BiS-BiS2")
nffg.add_undirected_link(infra1.add_port(0), nf0.add_port(3), dynamic=True)
nffg.add_undirected_link(infra1.add_port(1), nf0.add_port(4), dynamic=True)
nffg.add_undirected_link(infra1.add_port(2), nf1.add_port(3), dynamic=True)
nffg.add_undirected_link(infra2.add_port(0), nf2.add_port(4), dynamic=True)
nffg.add_undirected_link(infra2.add_port(1), nf3.add_port(2), dynamic=True)
nffg.add_undirected_link(infra1.add_port(3),
infra2.add_port(2),
bandwidth=31241242)
return nffg
