def launch():
h1 = NoPacketHost.create('h1')
h2 = GetPacketHost.create('h2')
s1 = sim.config.default_switch_type.create('s1')
s2 = sim.config.default_switch_type.create('s2')
c1 = CountingHub.create('c1')
c2 = CountingHub.create('c2')
h1.linkTo(s1, latency=1)
s1.linkTo(c1, latency=1)
c1.linkTo(s2, latency=1)
s2.linkTo(h2, latency=1)
s1.linkTo(c2, latency=3) # should not take
c2.linkTo(h2, latency=1)
def test_tasklet():
yield 10 # need to wait for routing tables
api.userlog.debug('Sending ping from h1 to h2')
h1.ping(h2)
yield 5 # need to wait for packet to get past c1
if c1.pings == 1 and c2.pings == 0:
api.userlog.debug('The ping took the right path')
good = True
else:
api.userlog.error('Wrong initial path!')
good = False
api.userlog.debug('Increasing s2-h2 latency')
s2.unlinkTo(h2)
s2.linkTo(h2, latency=4)
yield 5 # wait for update to propagate back to routers
api.userlog.debug('Sending ping from h1 to h2')
h1.ping(h2)
yield 5 # wait for packet to pass c2 and get to h2
if c1.pings == 1 and c2.pings == 1:
api.userlog.debug('Good path!')
good = True and good
else:
api.userlog.error('You wrong')
good = False
import sys
sys.exit(0 if good else 1)
api.run_tasklet(test_tasklet)
def launch():
h1 = GetPacketHost.create('h1')
h2 = GetPacketHost.create('h2')
s1 = sim.config.default_switch_type.create('s1')
s2 = sim.config.default_switch_type.create('s2')
s3 = sim.config.default_switch_type.create('s3')
c1 = CountingHub.create('c1')
c2 = CountingHub.create('c2')
c3 = CountingHub.create('c3')
h1.linkTo(s1)
s1.linkTo(c1)
c1.linkTo(s3)
h1.linkTo(s2)
s2.linkTo(c2)
c2.linkTo(s3)
h1.linkTo(c3)
c3.linkTo(s3)
s3.linkTo(h2)
def test_tasklet():
yield 15
api.userlog.debug(
'Sending ping from h1 to h2 - it should hit 3 routers')
h1.ping(h2)
yield 5
if h1.pings != 0 or h2.pings != 3 or c1.pings != 1 or c2.pings != 1 or c3.pings != 1:
api.userlog.error("The ping did not propagate through all routers")
sys.exit(1)
api.userlog.debug(
'Sending ping from h2 to h1 - it should hit 1 router')
h2.ping(h1)
yield 5
if h1.pings != 1 or h2.pings != 3 or c1.pings != 1 or c2.pings != 1 or c3.pings != 2:
api.userlog.error("The ping hit more than 1 router")
sys.exit(1)
api.userlog.debug("Pings sent correctly")
sys.exit(0)
api.run_tasklet(test_tasklet)
def launch():
h1 = NoPacketHost.create('h1')
h2 = GetPacketHost.create('h2')
s1 = sim.config.default_switch_type.create('s1')
s2 = sim.config.default_switch_type.create('s2')
c1 = CountingHub.create('c1')
h1.linkTo(s1)
s1.linkTo(c1)
c1.linkTo(s2)
h2.linkTo(s1, latency=5)
h2.linkTo(s2)
def test_tasklet():
yield 15
api.userlog.debug('Sending ping from h1 to h2 - it should get through')
h1.ping(h2)
yield 5
if c1.pings != 1:
api.userlog.error("The first ping didn't go through s2")
sys.exit(1)
if h2.pings != 1:
api.userlog.error("The first ping didn't get through")
sys.exit(1)
api.userlog.debug('Disconnecting s2 and h2')
s2.unlinkTo(h2)
api.userlog.debug('Waiting for routes to expire')
yield 20
api.userlog.debug(
'Sending ping from h1 to h2 - should still get through and not' +
'try to go through c1')
h1.ping(h2)
yield 7
if c1.pings != 1:
api.userlog.error(
's1 forwarded the ping through c1 instead of directly to h2')
sys.exit(1)
elif h2.pings != 2:
api.userlog.error(
'h2 did not receive the second ping')
sys.exit(1)
else:
api.userlog.debug('yay')
sys.exit(0)
api.run_tasklet(test_tasklet)
def launch():
h1 = NoPacketHost.create('h1')
h2 = GetPacketHost.create('h2')
s1 = sim.config.default_switch_type.create('s1')
s2 = sim.config.default_switch_type.create('s2')
s3 = sim.config.default_switch_type.create('s3')
c1 = CountingHub.create('c1')
h1.linkTo(s1)
s1.linkTo(c1)
c1.linkTo(s2)
s2.linkTo(s3)
s3.linkTo(h2)
def test_tasklet():
yield 15
api.userlog.debug('Sending ping from h1 to h2 - it should get through')
h1.ping(h2)
yield 5
if c1.pings != 1:
api.userlog.error("The first ping didn't get through")
sys.exit(1)
api.userlog.debug('Disconnecting s2 and s3')
s2.unlinkTo(s3)
api.userlog.debug(
'Waiting for poison to propagate, but not long enough ' +
'for routes to time out')
yield 10
api.userlog.debug(
'Sending ping from h1 to h2 - it should be dropped at s2, not s1')
h1.ping(h2)
yield 5
if c1.pings != 2:
api.userlog.error(
's1 dropped the ping when it should have forwarded it')
sys.exit(1)
else:
api.userlog.debug('s1 forwarded the ping as expected')
if h2.pings != 1:
api.userlog.error('h2 received pings after the link removed!')
sys.exit(1)
sys.exit(0)
api.run_tasklet(test_tasklet)
def launch():
h1 = NoPacketHost.create('h1')
h2 = GetPacketHost.create('h2')
s1 = sim.config.default_switch_type.create('s1')
s2 = sim.config.default_switch_type.create('s2')
s3 = sim.config.default_switch_type.create('s3')
c1 = CountingHub.create('c1')
h1.linkTo(s1)
s1.linkTo(c1)
c1.linkTo(s2)
s2.linkTo(s3)
s3.linkTo(h2)
def test_tasklet():
yield 15
api.userlog.debug('Sending ping from h1 to h2 - it should get through')
h1.ping(h2)
yield 5
if c1.pings != 1:
api.userlog.error("The first ping didn't get through")
sys.exit(1)
api.userlog.debug('Disconnecting s2 and s3')
s2.unlinkTo(s3)
api.userlog.debug(
'Waiting for poison to propagate, but not long enough ' +
'for routes to time out')
yield 10
api.userlog.debug(
'Sending ping from h1 to h2 - it should be dropped at s1')
h1.ping(h2)
yield 5
if c1.pings != 1:
api.userlog.error(
's1 forwarded the ping when it should have dropped it')
sys.exit(1)
else:
api.userlog.debug('s1 dropped the ping as expected')
sys.exit(0)
api.run_tasklet(test_tasklet)
def launch():
h2 = NoPacketHost.create('h2')
h1 = GetPacketHost.create('h1')
s1 = sim.config.default_switch_type.create('s1')
s3 = sim.config.default_switch_type.create('s3')
c1 = CountingHub.create('c1')
h1.linkTo(s1, latency=10)
s1.linkTo(s3, latency=1)
s1.linkTo(h2, latency=1)
h1.linkTo(c1, latency=1)
c1.linkTo(s3, latency=1)
def test_tasklet():
yield 15
api.userlog.debug('Sending ping from h2 to h1')
h2.ping(h1)
yield 5
if c1.pings == 1:
api.userlog.debug('The ping took the right path')
good = True
else:
api.userlog.error('Wrong initial path!')
good = False
s1.unlinkTo(s3)
yield 0.1
api.userlog.debug('Sending ping from h2 to h1')
h2.ping(h1)
yield 15
if c1.pings == 1 and h1.pings == 2:
api.userlog.debug('Good path!')
good = True and good
else:
api.userlog.error('Wrong, fallback direct path not used!')
good = False
import sys
sys.exit(0 if good else 1)
api.run_tasklet(test_tasklet)
def launch():
h_a = GetPacketHost.create('h_a')
h_c = NoPacketHost.create('h_c')
h_d = NoPacketHost.create('h_d')
backup_interval = sim.config.default_switch_type.DEFAULT_TIMER_INTERVAL
sim.config.default_switch_type.DEFAULT_TIMER_INTERVAL = 1
a = sim.config.default_switch_type.create('a')
b = sim.config.default_switch_type.create('b')
c = sim.config.default_switch_type.create('c')
d = sim.config.default_switch_type.create('d')
c_cb = CountingHub.create('c_cb')
c_db = CountingHub.create('c_db')
c_cd = CountingHub.create('c_cd')
h_a.linkTo(a)
h_c.linkTo(c)
h_d.linkTo(d)
a.linkTo(b)
b.linkTo(c_cb)
b.linkTo(c_db, latency = 1.5)
c_cb.linkTo(c, latency = 0)
c_db.linkTo(d, latency = 0)
c.linkTo(c_cd)
c_cd.linkTo(d, latency = 0)
def test_tasklet():
yield 15
api.userlog.debug('Sending ping from h_c to h_a - it should get through')
h_c.ping(h_a)
yield 6
if h_a.pings != 1 or c_cb.pings != 1 or c_cd.pings != 0:
api.userlog.error("The first ping didn't get through or followed wrong path")
sys.exit(1)
api.userlog.debug('Sending ping from h_d to h_a - it should get through')
h_d.ping(h_a)
yield 6
if h_a.pings != 2 or c_db.pings != 1 or c_cd.pings != 0:
api.userlog.error("The second ping didn't get through or followed wrong path")
sys.exit(1)
api.userlog.debug('Disconnecting a and b')
a.unlinkTo(b)
api.userlog.debug('Waiting for routers to count to infinity')
yield 75
api.userlog.debug(
'Sending ping from h_c to h_a - it should be dropped at c')
h_c.ping(h_a)
yield 5
if c_cb.pings != 1 or c_cd.pings != 0:
api.userlog.error(
'c forwarded the ping when it should have dropped it')
sys.exit(1)
else:
api.userlog.debug('c dropped the ping as expected')
sys.exit(0)
api.run_tasklet(test_tasklet)
sim.config.default_switch_type.DEFAULT_TIMER_INTERVAL = backup_interval
def launch():
h1 = TestHost.create("h1")
h2 = TestHost.create("h2")
h3 = TestHost.create("h3")
h4 = TestHost.create("h4")
c1 = CountingHub.create('c1')
c2 = CountingHub.create('c2')
c3 = CountingHub.create('c3')
c4 = CountingHub.create('c4')
c1.linkTo(h1)
c2.linkTo(h2)
c3.linkTo(h3)
c4.linkTo(h4)
s1 = sim.config.default_switch_type.create("s1")
s2 = sim.config.default_switch_type.create("s2")
s3 = sim.config.default_switch_type.create("s3")
s4 = sim.config.default_switch_type.create("s4")
s5 = sim.config.default_switch_type.create("s5")
s1.linkTo(c1)
s2.linkTo(c2)
s3.linkTo(c3)
s4.linkTo(c4)
s1.linkTo(s5)
s2.linkTo(s5)
s3.linkTo(s5)
s4.linkTo(s5)
def test_tasklet():
yield 1
api.userlog.debug("Sending test pings")
h1.ping(h2)
yield 10
h2.ping(h3)
yield 10
h3.ping(h4)
yield 10
h4.ping(h1)
api.userlog.debug("Waiting for deliveries")
yield 10
h2.ping(h3)
yield 10 # Wait five seconds for deliveries
h2.ping(h3)
yield 10
h2.ping(h3)
yield 10
good = True
if c1.pings != 4 or c2.pings != 6 or c3.pings != 6 or c4.pings != 4:
good = False
# End the simulation and (if not running in interactive mode) exit.
import sys
sys.exit(0 if good else 1)
api.run_tasklet(test_tasklet)
def launch():
h1 = basics.BasicHost.create("h1")
h2 = basics.BasicHost.create("h2")
h3 = basics.BasicHost.create("h3")
c12 = CountingHub.create('c12')
c13 = CountingHub.create('c13')
c23 = CountingHub.create('c23')
r1 = sim.config.default_switch_type.create("r1")
r2 = sim.config.default_switch_type.create('r2')
r3 = sim.config.default_switch_type.create('r3')
r1.linkTo(h1, latency=1)
r1.linkTo(c12, latency=1)
c12.linkTo(r2, latency=2)
r1.linkTo(c13, latency=5)
c13.linkTo(r3, latency=5)
r2.linkTo(c23, latency=2)
c23.linkTo(r3, latency=2)
r2.linkTo(h2, latency=2)
r3.linkTo(h3, latency=1)
def test_tasklet():
yield 20
api.userlog.debug('Sending ping from h1 to h3')
h1.ping(h3)
yield 10
if c13.pings == 0 and c12.pings == 1 and c23.pings == 1:
api.userlog.debug('The ping took the right path')
good = True
else:
api.userlog.error('The ping took the wrong path')
good = False
api.userlog.debug('Sending ping from h2 to h3')
h2.ping(h3)
yield 10
if c13.pings == 0 and c12.pings == 1 and c23.pings == 2:
api.userlog.debug('The ping took the right path')
good = good and True
else:
api.userlog.error('The ping took the wrong path')
good = False
api.userlog.debug('Link R1 - R2 goes down')
r1.unlinkTo(c12)
c12.unlinkTo(r2)
yield 20
api.userlog.debug('Sending ping from h1 to h2')
h1.ping(h2)
yield 15
if c13.pings == 1 and c12.pings == 1 and c23.pings == 3:
api.userlog.debug('The ping took the right path')
good = good and True
else:
api.userlog.error('The ping took the wrong path')
good = False
import sys
sys.exit(0 if good else 1)
api.run_tasklet(test_tasklet)
def launch():
h1 = GetPacketHost.create('h1')
h2 = GetPacketHost.create('h2')
c1 = CountingHub.create('c1')
c2 = CountingHub.create('c2')
s1 = sim.config.default_switch_type.create('s1')
s2 = sim.config.default_switch_type.create('s2')
s3 = sim.config.default_switch_type.create('s3')
h1.linkTo(s1, latency=1)
s1.linkTo(c1, latency=6)
c1.linkTo(s2, latency=6)
s2.linkTo(h2, latency=5)
s2.linkTo(c2, latency=1)
c2.linkTo(s3, latency=1)
s3.linkTo(h2, latency=1)
h2.linkTo(s1, latency=10)
def test_tasklet():
yield 40
api.userlog.debug('Sending ping from h1 to h2')
h1.ping(h2)
yield 20
if c1.pings == 1 and c2.pings == 1 and h2.pings == 1:
api.userlog.debug('The ping took the right path')
good = True
else:
api.userlog.error('Wrong initial path!')
good = False
s2.unlinkTo(c2)
s3.unlinkTo(c2)
yield 0.1
api.userlog.debug('Sending ping from h1 to h2')
h1.ping(h2)
yield 20
if c1.pings == 2 and c2.pings == 1 and h2.pings == 2:
api.userlog.debug('The ping took the right path')
good = True and good
else:
api.userlog.error('Wrong, fallback direct path not used!')
good = False
yield 60
api.userlog.debug('Sending ping from h1 to h2')
h1.ping(h2)
yield 20
if c1.pings == 2 and h2.pings == 3:
api.userlog.debug('Good path!')
good = True and good
else:
api.userlog.error('%s, %s, %s', str(c1.pings), str(c2.pings),
str(h2.pings))
api.userlog.error('Paths not updated after fallback.')
good = False
import sys
sys.exit(0 if good else 1)
api.run_tasklet(test_tasklet)
def launch():
h1 = NoPacketHost.create('h1')
h2 = GetPacketHost.create('h2')
h3 = NoPacketHost.create('h3')
h4 = GetPacketHost.create('h4')
h10 = GetPacketHost.create('h10')
s1 = sim.config.default_switch_type.create('s1')
s2 = sim.config.default_switch_type.create('s2')
s3 = sim.config.default_switch_type.create('s3')
s4 = sim.config.default_switch_type.create('s4')
s5 = sim.config.default_switch_type.create('s5')
s6 = sim.config.default_switch_type.create('s6')
s7 = sim.config.default_switch_type.create('s7')
s8 = sim.config.default_switch_type.create('s8')
s9 = sim.config.default_switch_type.create('s9')
s10 = sim.config.default_switch_type.create('s10')
s11 = sim.config.default_switch_type.create('s11')
s12 = sim.config.default_switch_type.create('s12')
c13 = CountingHub.create('c1')
h1.linkTo(s1)
h3.linkTo(s3)
h4.linkTo(s4)
s1.linkTo(c1)
c1.linkTo(s2)
s2.linkTo(s3)
s3.linkTo(h2)
s2.linkTo(s4)
s5.linkTo(s8)
s6.linkTo(s8)
s1.linkTo(s3)
s4.linkTo(s9)
s8.linkTo(s7)
s5.linkTo(s7)
s6.linkTo(s10)
s1.linkTo(s11)
s4.linkTo(s12)
s8.linkTo(s10)
s4.linkTo(s10)
s10.linkTo(h10)
def test_tasklet():
yield 15
api.userlog.debug('Sending ping from h1 to h2 - it should get through')
h1.ping(h2)
yield 5
if h2.pings != 1:
api.userlog.error("The first ping didn't get through")
sys.exit(1)
api.userlog.debug('Disconnecting s2 and s3')
s4.unlinkTo(h4)
api.userlog.debug(
'Waiting for poison to propagate, but not long enough ' +
'for routes to time out')
yield 15
api.userlog.debug(
'Sending ping from h1 to h2 - it should be dropped at s1')
h1.ping(h4)
yield 5
if c1.pings != 0:
api.userlog.error(
's1 forwarded the ping when it should have dropped it')
sys.exit(1)
else:
api.userlog.debug('s1 dropped the ping as expected')
sys.exit(0)
api.run_tasklet(test_tasklet)