def __init__(self, numnodes, linkprob = 0.35, seed = None,
ipv4prefix = '10.0.0.0/8', ipv6prefix = 'a::/64'):
assert numnodes > 1
Topology.__init__(self, numnodes)
if seed is not None:
random.seed(seed)
self.net = self.session.addobj(cls = pycore.nodes.WlanNode)
p4 = ipaddr.IPv4Prefix(ipv4prefix)
p6 = ipaddr.IPv6Prefix(ipv6prefix)
for i in xrange(numnodes):
addrlist = ['%s/%s' % (p4.addr(i + 1), 32),
'%s/%s' % (p6.addr(i + 1), 128)]
self.n[i].newnetif(self.net, addrlist = addrlist, ifname = 'eth0')
# connect nodes with probability linkprob
for i in xrange(numnodes):
netif = self.n[i].netif(0)
for j in xrange(i + 1, numnodes):
r = random.random()
if r < linkprob:
self.net.link(netif, self.n[j].netif(0))
if not self.net._linked[netif]:
# force one link to avoid partitions
j = i
while j == i:
j = random.randint(0, numnodes - 1)
self.net.link(netif, self.n[j].netif(0))
def __init__(self,
numnodes,
ipv4prefix='10.0.0.0/30',
ipv6prefix='a::/126'):
assert numnodes > 1
Topology.__init__(self, numnodes)
self.net = []
p4 = ipaddr.IPv4Prefix(ipv4prefix)
p6 = ipaddr.IPv6Prefix(ipv6prefix)
self.net.append(self.session.addobj(cls=pycore.nodes.SwitchNode))
addrlist = [
'%s/%s' % (p4.addr(1), p4.prefixlen),
'%s/%s' % (p6.addr(1), p6.prefixlen)
]
self.n[0].newnetif(self.net[0], addrlist=addrlist, ifname='eth0')
for i in xrange(1, numnodes - 1):
addrlist = [
'%s/%s' % (p4.addr(2), p4.prefixlen),
'%s/%s' % (p6.addr(2), p6.prefixlen)
]
self.n[i].newnetif(self.net[i - 1],
addrlist=addrlist,
ifname='eth0')
p4 += 1
p6 += 1
self.net.append(self.session.addobj(cls=pycore.nodes.SwitchNode))
addrlist = [
'%s/%s' % (p4.addr(1), p4.prefixlen),
'%s/%s' % (p6.addr(1), p6.prefixlen)
]
self.n[i].newnetif(self.net[i], addrlist=addrlist, ifname='eth1')
i += 1
addrlist = [
'%s/%s' % (p4.addr(2), p4.prefixlen),
'%s/%s' % (p6.addr(2), p6.prefixlen)
]
self.n[i].newnetif(self.net[i - 1], addrlist=addrlist, ifname='eth0')
def __init__(self,
numnodes,
linkprob=0.35,
seed=None,
ipv4prefix='10.0.0.0/8',
ipv6prefix='a::/64'):
assert numnodes > 1
Topology.__init__(self, numnodes)
if seed is not None:
random.seed(seed)
self.net = self.session.addobj(cls=pycore.nodes.WlanNode)
p4 = ipaddr.IPv4Prefix(ipv4prefix)
p6 = ipaddr.IPv6Prefix(ipv6prefix)
for i in xrange(numnodes):
addrlist = [
'%s/%s' % (p4.addr(i + 1), 32),
'%s/%s' % (p6.addr(i + 1), 128)
]
self.n[i].newnetif(self.net, addrlist=addrlist, ifname='eth0')
# connect nodes with probability linkprob
for i in xrange(numnodes):
netif = self.n[i].netif(0)
for j in xrange(i + 1, numnodes):
r = random.random()
if r < linkprob:
self.net.link(netif, self.n[j].netif(0))
if not self.net._linked[netif]:
# force one link to avoid partitions
j = i
while j == i:
j = random.randint(0, numnodes - 1)
self.net.link(netif, self.n[j].netif(0))
def __init__(self, specifications):
Topology.__init__(self, specifications)
def __init__(self, m, n,
ipv4prefix = '10.0.0.0/30', ipv6prefix = 'a::/126'):
assert m > 1
assert n > 0
Topology.__init__(self, m * n)
p4 = ipaddr.IPv4Prefix(ipv4prefix)
p6 = ipaddr.IPv6Prefix(ipv6prefix)
class NetConfig(object):
def __init__(self, net, ipv4prefix, ipv6prefix):
self.net = net
self.ipv4prefix = ipv4prefix
self.ipv6prefix = ipv6prefix
for i in xrange(n):
for j in xrange(m):
node = self.n[i * n + j]
ifindex = 0
# network above
if j > 0:
above = self.n[i * n + j - 1]
netcfg = above.netcfg_below
addrlist = ['%s/%s' % (netcfg.ipv4prefix.addr(2),
netcfg.ipv4prefix.prefixlen),
'%s/%s' % (netcfg.ipv6prefix.addr(2),
netcfg.ipv6prefix.prefixlen)]
node.newnetif(netcfg.net, addrlist = addrlist,
ifname = 'eth%s' % ifindex)
ifindex += 1
node.netcfg_above = above.netcfg_below
# network to the left
if i > 0:
left = self.n[(i - 1) * n + j]
netcfg = left.netcfg_right
addrlist = ['%s/%s' % (netcfg.ipv4prefix.addr(2),
netcfg.ipv4prefix.prefixlen),
'%s/%s' % (netcfg.ipv6prefix.addr(2),
netcfg.ipv6prefix.prefixlen)]
node.newnetif(netcfg.net, addrlist = addrlist,
ifname = 'eth%s' % ifindex)
ifindex += 1
node.netcfg_left = left.netcfg_right
# network to the right
if i < n - 1:
net = self.session.addobj(cls = pycore.nodes.SwitchNode)
netcfg = NetConfig(net, p4, p6)
p4 += 1
p6 += 1
addrlist = ['%s/%s' % (netcfg.ipv4prefix.addr(1),
netcfg.ipv4prefix.prefixlen),
'%s/%s' % (netcfg.ipv6prefix.addr(1),
netcfg.ipv6prefix.prefixlen)]
node.newnetif(netcfg.net, addrlist = addrlist,
ifname = 'eth%s' % ifindex)
ifindex += 1
node.netcfg_right = netcfg
# network below
if j < m - 1:
net = self.session.addobj(cls = pycore.nodes.SwitchNode)
netcfg = NetConfig(net, p4, p6)
p4 += 1
p6 += 1
addrlist = ['%s/%s' % (netcfg.ipv4prefix.addr(1),
netcfg.ipv4prefix.prefixlen),
'%s/%s' % (netcfg.ipv6prefix.addr(1),
netcfg.ipv6prefix.prefixlen)]
node.newnetif(netcfg.net, addrlist = addrlist,
ifname = 'eth%s' % ifindex)
ifindex += 1
node.netcfg_below = netcfg
