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')
s4 = sim.config.default_switch_type.create('s4')
s5 = sim.config.default_switch_type.create('s5')
h1.linkTo(s1)
h2.linkTo(s2)
s1.linkTo(s2)
s1.linkTo(s3)
s3.linkTo(s4)
s4.linkTo(s5)
s5.linkTo(s2)
def test_tasklet():
t = 25.5
yield t # Wait for routing to converge
api.userlog.debug("Sending test ping 1")
h1.ping(h2)
yield t
api.userlog.debug("Failing s1-s2 link")
s1.unlinkTo(s2)
yield t
api.userlog.debug("Sending test ping 2")
h1.ping(h2)
yield t
if h2.pings != 2:
api.userlog.error("h2 got %s packets instead of 2", h2.pings)
good = False
else:
api.userlog.debug("Test passed successfully!")
good = True
# 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 = 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 = GetPacketHost.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, latency=4)
h2.linkTo(s1)
s1.linkTo(s2)
s2.linkTo(c1, latency=1)
c1.linkTo(h1, latency=1)
def test_tasklet():
t = 25.5
yield t # Wait for routing to converge
api.userlog.debug("Sending test ping 1")
h2.ping(h1)
yield t
api.userlog.debug("Failing s1-s2 link")
s1.unlinkTo(s2)
yield t
api.userlog.debug("Sending test ping 2")
h2.ping(h1)
yield t
if h1.pings != 2:
api.userlog.error("h1 got %s packets instead of 2", h1.pings)
good = False
elif c1.pings != 1:
api.userlog.error("c1 got %s pings instead of 1", c1.pings)
good = False
else:
api.userlog.debug("Test passed successfully!")
good = True
# 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 = NoPacketHost.create("h1")
h2 = GetPacketHost.create("h2")
s1 = sim.config.default_switch_type.create('s1')
s2 = sim.config.default_switch_type.create('s2')
h1.linkTo(s1)
h2.linkTo(s2)
def test_tasklet():
yield 5
api.userlog.debug('Linking s1 and s2')
s1.linkTo(s2)
yield 0.1
api.userlog.debug('Sending ping from h1 to h2')
h1.ping(h2)
yield 5
if h2.pings != 1:
api.userlog.error("h2 got %s pings instead of 1", h2.pings)
good = False
else:
api.userlog.debug('h2 successfully received the ping')
good = True
import sys
sys.exit(0 if good else 1)
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, latency=1)
s1.linkTo(s2, latency=1)
s2.linkTo(s3, latency=5)
s3.linkTo(c1, latency=1)
c1.linkTo(h2, latency=1)
def test_tasklet():
yield 20
api.userlog.debug('Sending ping from h1 to h2')
h1.ping(h2)
yield 10
if c1.pings == 1:
api.userlog.debug('The ping took the right path')
good = True
else:
api.userlog.error(
'idk what happened to ping lol theres no other way')
good = False
s4 = sim.config.default_switch_type.create('s4')
c2 = CountingHub.create('c2')
s1.linkTo(s4, latency=1)
s4.linkTo(c2, latency=1)
c2.linkTo(h2, latency=1)
yield 20
h1.ping(h2)
yield 5
if c1.pings == 1 and c2.pings == 1:
api.userlog.debug('The ping took the right path')
good2 = True
elif c2.pings == 0 and c1.pings == 2:
api.userlog.error('The ping took the wrong path')
good2 = False
else:
api.userlog.error('Something strange happened to the ping')
good2 = False
import sys
sys.exit(0 if good and good2 else 1)
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')
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 = NoPacketHost.create('h1')
h2 = GetPacketHost.create('h2')
s1 = sim.config.default_switch_type.create('s1')
s2 = sim.config.default_switch_type.create('s2')
c1 = SwitchableCountingHub.create('c1')
s1.linkTo(h1, latency=1)
s1.linkTo(h2, latency=5)
s1.linkTo(c1, latency=1)
s2.linkTo(c1, latency=1)
s2.linkTo(h2, latency=1)
def test_tasklet():
yield 15 # wait for path convergence
api.userlog.debug('Sending ping from h1 to h2')
h1.ping(h2)
yield 10 # wait for ping to go through
if c1.pings != 1:
api.userlog.error("Ping should have gone through c1")
sys.exit(1)
# unlink s2
s2.unlinkTo(c1)
s2.unlinkTo(h2)
s1.unlinkTo(c1)
api.userlog.debug("bye bye s2")
yield 25 # wait for new route convergence
api.userlog.debug('Sending ping from h1 to h2')
h1.ping(h2)
yield 10 # wait for ping to reach h2 again
if c1.pings != 1:
api.userlog.error("c1 shouldn't have seen another ping")
sys.exit(1)
if h2.pings != 2:
api.userlog.error("h2 should have seen the ping by now")
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 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():
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)
# s1.linkTo(s3, latency=1)
# s3.linkTo(s4, latency=1)
# s4.linkTo(h2, latency=1)
def test_tasklet():
yield 20
api.userlog.debug('Sending ping from h2 to h1')
h2.ping(h1)
yield 20
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 20
api.userlog.debug('Sending ping from h2 to h1')
h2.ping(h1)
yield 20
if c1.pings == 1 and h1.pings == 2:
api.userlog.debug('Good path!')
good = True and good
else:
api.userlog.debug('Wrong!')
good = False
import sys
if not good:
sys.exit(1)
sys.exit(0 if good else 1)
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')
s2 = sim.config.default_switch_type.create('s2')
s3 = sim.config.default_switch_type.create('s3')
s4 = sim.config.default_switch_type.create('s4')
c1 = CountingHub.create('c1')
c2 = CountingHub.create('c2')
h1.linkTo(c1, latency=1)
h1.linkTo(c2, latency=1)
c2.linkTo(s2, latency=4)
c1.linkTo(s1, latency=1)
s1.linkTo(s3, latency=1)
s2.linkTo(s3, latency=1)
s3.linkTo(s4, latency=1)
s4.linkTo(h2, latency=1)
def test_tasklet():
yield 20
api.userlog.debug('Sending ping from h1 to h2')
h2.ping(h1)
yield 5
good = True
if c1.pings != 1 or c2.pings != 0:
api.userlog.debug('The ping took the wrong path')
good = False
api.userlog.debug('C1 received %i pings, C2 received %i pings' % (c1.pings, c2.pings))
import sys
sys.exit(0 if good else 1)
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')
s4 = sim.config.default_switch_type.create('s4')
c1 = CountingHub.create('c1')
c2 = CountingHub.create('c2')
h1.linkTo(s1, latency=1)
s1.linkTo(s2, latency=1)
s2.linkTo(s3, latency=1)
s3.linkTo(c1, latency=1)
c1.linkTo(h2, latency=1)
s1.linkTo(s4, latency=3)
s4.linkTo(c2, latency=1)
c2.linkTo(h2, latency=1)
def test_tasklet():
yield 20
api.userlog.debug('Sending ping from h1 to h2')
h1.ping(h2)
yield 5
if c1.pings == 1 and c2.pings == 0:
api.userlog.debug('The ping took the right path')
good = True
elif c2.pings == 1 and c1.pings == 0:
api.userlog.error('The ping took the wrong path')
good = False
else:
api.userlog.error('Something strange happened to the ping')
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")
s1 = sim.config.default_switch_type.create('s1')
s2 = sim.config.default_switch_type.create('s2')
h1.linkTo(s1)
h2.linkTo(s2)
def test_tasklet():
yield 5
api.userlog.debug('Linking s1 and s2')
def test_cable():
c = cable.BasicCable()
c.tx_time = 0
return c
s1.linkTo(s2, cable=(test_cable(), test_cable()))
yield 0.1
api.userlog.debug('Sending ping from h1 to h2')
h1.ping(h2)
yield 5
if h2.pings != 1:
api.userlog.error("h2 got %s pings instead of 1", h2.pings)
good = False
else:
api.userlog.debug('h2 successfully received the ping')
good = True
import sys
sys.exit(0 if good else 1)
api.run_tasklet(test_tasklet)
def launch():
h1 = GetPacketHost.create('h1')
h2 = NoPacketHost.create('h2')
h3 = NoPacketHost.create('h3')
h4 = NoPacketHost.create('h4')
h5 = NoPacketHost.create('h5')
r1 = sim.config.default_switch_type.create('r1')
r2 = sim.config.default_switch_type.create('r2')
r3 = sim.config.default_switch_type.create('r3')
r4 = sim.config.default_switch_type.create('r4')
c1 = CountingHub.create('c1')
c2 = CountingHub.create('c2')
c3 = CountingHub.create('c3')
c4 = CountingHub.create('c4')
h1.linkTo(r1, latency=5)
h1.linkTo(r2, latency=1)
h1.linkTo(r3, latency=4)
h1.linkTo(r4, latency=8)
h2.linkTo(r4, latency=0)
h3.linkTo(r3, latency=.5)
h4.linkTo(r2, latency=0)
h5.linkTo(r1, latency=0)
r4.linkTo(c1, latency=2)
c1.linkTo(r1, latency=2)
r1.linkTo(c2, latency=2)
c2.linkTo(r3, latency=2)
r3.linkTo(c3, latency=1)
c3.linkTo(r2, latency=1)
r2.linkTo(c4, latency=7)
c4.linkTo(r4, latency=7)
def test_tasklet():
yield 20
api.userlog.debug('Sending pings')
h2.ping(h1)
h3.ping(h1)
h4.ping(h1)
h5.ping(h1)
yield 15
good = True
if c1.pings == 1 and c2.pings == 2 and c3.pings == 3 and c4.pings == 0 and h1.pings == 4:
api.userlog.debug('The ping took the right path')
else:
api.userlog.error('Something strange happened to the ping')
good = False
api.userlog.debug('Disconnecting R2')
r2.unlinkTo(h1)
r2.unlinkTo(c4)
r2.unlinkTo(c3)
yield 20
api.userlog.debug('Sending pings')
h2.ping(h1)
h3.ping(h1)
h5.ping(h1)
yield 15
if c1.pings == 2 and c2.pings == 2 and c3.pings == 3 and c4.pings == 0 and h1.pings == 7:
api.userlog.debug('The ping took the right path')
else:
api.userlog.error('Something strange happened to the ping')
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 = GetPacketHost.create('h1')
h2 = NoPacketHost.create('h2')
r1 = sim.config.default_switch_type.create('r1')
r2 = sim.config.default_switch_type.create('r2')
r3 = sim.config.default_switch_type.create('r3')
c1 = SwitchableCountingHub.create('c1')
r1.linkTo(c1, latency=10)
r3.linkTo(c1, latency=10)
c2 = SwitchableCountingHub.create('c2')
r2.linkTo(c2, latency=1)
r3.linkTo(c2, latency=1)
h1.linkTo(r1, latency=1)
r1.linkTo(r2, latency=1)
h2.linkTo(r3, latency=1)
hosts = [h1, h2]
routers = [r1, r2, r3]
counting_hubs = [c1, c2]
def test_tasklet():
yield 20
api.userlog.debug('Sending ping from h1 to h2 - it should get through')
h1.ping(h2)
yield 5
if c1.pings != 0:
api.userlog.error("The first ping should not pass through c1")
sys.exit(1)
if c2.pings != 1:
api.userlog.error("The first ping didn't get through")
sys.exit(1)
yield 10
api.userlog.debug('Silently disconnecting r2 and h2')
c2.unlinkTo(r2)
c2.unlinkTo(r3)
yield 25
api.userlog.debug('Sending ping from h1 to h2 - it should get through')
h1.ping(h2)
yield 15
if c1.pings != 1:
api.userlog.error("The second ping didn't get through")
sys.exit(1)
if c2.pings > 1:
api.userlog.error("The second ping should not pass through c2")
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')
s4 = sim.config.default_switch_type.create('s4')
c1 = CountingHub.create('c1')
c2 = CountingHub.create('c2')
c3 = CountingHub.create('c3')
h1.linkTo(s1, latency=1)
h2.linkTo(s2, latency=1)
s1.linkTo(c1, latency=1)
c1.linkTo(s2, latency=1)
s1.linkTo(c2, latency=2)
c2.linkTo(s3, latency=1)
s1.linkTo(c3, latency=1)
c3.linkTo(s4, latency=1)
s2.linkTo(s3, latency=5)
s4.linkTo(s3, latency=15)
def test_tasklet():
yield 20
api.userlog.debug('Sending ping from h1 to h2')
h1.ping(h2)
yield 5
if c1.pings == 1 and c2.pings == 0 and c3.pings == 0:
api.userlog.debug('The ping took the right path')
good = True
elif not c1.pings == 1 or not c2.pings == 0 or not c3.pings == 0:
api.userlog.error('The ping took the wrong path')
good = False
else:
api.userlog.error('Something strange happened to the ping')
good = False
api.userlog.debug('Disconnecting s1 and c1')
s1.unlinkTo(c1)
yield 20
api.userlog.debug('Sending ping from h1 to h2')
h1.ping(h2)
yield 5
if c1.pings == 1 and c2.pings == 1 and c3.pings == 0 :
api.userlog.debug('The ping took the right path')
good2 = True
elif not c1.pings == 1 or not c2.pings == 1 or not c3.pings == 0 :
api.userlog.error('The ping took the wrong path')
good2 = False
else:
api.userlog.error('Something strange happened to the ping')
good2 = False
api.userlog.debug('Connecting s2 to s4')
s2.linkTo(s4, latency=2)
yield 20
api.userlog.debug('Sending ping from h1 to h2')
h1.ping(h2)
yield 5
if c1.pings == 1 and c2.pings == 1 and c3.pings == 1 :
api.userlog.debug('The ping took the right path')
good3 = True
elif not c1.pings == 1 or not c2.pings == 1 or not c3.pings == 1 :
api.userlog.error('The ping took the wrong path')
good3 = False
else:
api.userlog.error('Something strange happened to the ping')
good3 = False
import sys
sys.exit(0 if good and good2 and good3 else 1)
api.run_tasklet(test_tasklet)
def launch():
h1 = GetPacketHost.create("h1")
h2 = GetPacketHost.create("h2")
h3 = GetPacketHost.create("h3")
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')
s1.linkTo(h1, latency=1)
s1.linkTo(h2, latency=1)
s2.linkTo(h3, latency=1)
s1.linkTo(s4, latency=1)
s1.linkTo(s3, latency=3)
s4.linkTo(s5, latency=2)
s5.linkTo(s6, latency=3)
s6.linkTo(s2, latency=1)
s3.linkTo(s7, latency=6)
s7.linkTo(s8, latency=1)
s8.linkTo(s2, latency=1)
s5.linkTo(s7, latency=7)
def test_tasklet():
t = 30
yield t # Wait for routing to converge
api.userlog.debug("Sending test ping 1 (h1-h2)")
h1.ping(h2)
yield t
api.userlog.debug("Sending test ping 2 (h1-h3)")
h1.ping(h3)
yield t
api.userlog.debug("Failing s5-s6 link")
s5.unlinkTo(s6)
yield t
api.userlog.debug("Sending test ping 3 (h1-h3)")
h1.ping(h3)
yield t
api.userlog.debug("Failing s1-s3 link")
s1.unlinkTo(s3)
yield t
api.userlog.debug("Sending test ping 4 (h1-h3)")
h1.ping(h3)
yield t
if h3.pings != 3:
api.userlog.error("h3 got %s packets instead of 3", h3.pings)
good = False
elif h2.pings != 1:
api.userlog.error("h2 got %s packets instead of 1", h2.pings)
good = False
else:
api.userlog.debug("Test passed successfully!")
good = True
# 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 = 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 = GetPacketHost.create('h3')
r1 = sim.config.default_switch_type.create('r1')
r2 = sim.config.default_switch_type.create('r2')
r3 = sim.config.default_switch_type.create('r3')
r4 = sim.config.default_switch_type.create('r4')
c1 = CountingHub.create('c1')
c2 = CountingHub.create('c2')
c3 = CountingHub.create('c3')
c4 = CountingHub.create('c4')
c5 = CountingHub.create('c5')
c6 = CountingHub.create('c6')
h1.linkTo(r1, latency=1)
h1.linkTo(r2, latency=1)
h1.linkTo(c6, latency=3)
c6.linkTo(r3, latency=3)
r1.linkTo(c1, latency=2)
c1.linkTo(h2, latency=2)
r2.linkTo(h2, latency=1)
r2.linkTo(c2, latency=2)
c2.linkTo(h3, latency=2)
r2.linkTo(c4, latency=1)
c4.linkTo(r3, latency=1)
r3.linkTo(c3, latency=4)
c3.linkTo(h3, latency=4)
h2.linkTo(c5, latency=3)
c5.linkTo(r4, latency=3)
r4.linkTo(h3, latency=2)
def test_tasklet():
yield 100
api.userlog.debug('Sending pings')
h1.ping(h2)
h1.ping(h3)
h2.ping(h3)
yield 50
if c1.pings == 2 and c2.pings == 3 and c3.pings == 0 and c4.pings == 2 and c5.pings == 1 and c6.pings == 2:
api.userlog.debug('The ping took the right path')
good = True
else:
api.userlog.error('Something strange happened to the ping')
good = False
api.userlog.debug('Disconnecting R2 to h2')
r2.unlinkTo(h2)
api.userlog.debug('Disconnecting R2 to h3')
r2.unlinkTo(c2)
c2.unlinkTo(h3)
yield 25
print(r3.routing_table)
api.userlog.debug('Sending pings')
h1.ping(h2)
h1.ping(h3)
h2.ping(h3)
yield 20
if c1.pings == 4 and c2.pings == 3 and c3.pings == 2 and c4.pings == 3 and c5.pings == 2 and c6.pings == 4:
api.userlog.debug('The ping took the right path')
good = True
else:
api.userlog.error('Something strange happened to the ping')
good = False
api.userlog.debug('Disconnecting h1 to R3')
h1.unlinkTo(c6)
c6.unlinkTo(r3)
yield 20
api.userlog.debug('Sending pings')
h1.ping(h3)
yield 30
if c1.pings == 4 and c2.pings == 3 and c3.pings == 3 and c4.pings == 4 and c5.pings == 2 and c6.pings == 4:
api.userlog.debug('The ping took the right path')
good = True
else:
api.userlog.error('Something strange happened to the ping')
good = False
import sys
sys.exit(0 if good else 1)
api.run_tasklet(test_tasklet)
def launch():
h1 = GetPacketHost.create('h1')
h2 = NoPacketHost.create('h2')
rx = sim.config.default_switch_type.create('rx')
ry = sim.config.default_switch_type.create('ry')
r1 = sim.config.default_switch_type.create('r1')
r2 = sim.config.default_switch_type.create('r2')
r3 = sim.config.default_switch_type.create('r3')
r4 = sim.config.default_switch_type.create('r4')
c1 = SwitchableCountingHub.create('c1')
r1.linkTo(c1, latency=1)
r2.linkTo(c1, latency=1)
c2 = SwitchableCountingHub.create('c2')
r3.linkTo(c2, latency=1)
r4.linkTo(c2, latency=1)
h1.linkTo(rx, latency=0)
h2.linkTo(ry, latency=0)
rx.linkTo(r1, latency=2)
rx.linkTo(r3, latency=1)
ry.linkTo(r2, latency=4)
c3 = SwitchableCountingHub.create('c3')
r1.linkTo(c3, latency=16)
r3.linkTo(c3, latency=16)
c4 = SwitchableCountingHub.create('c4')
r2.linkTo(c4, latency=16)
r4.linkTo(c4, latency=16)
hosts = [h1, h2]
routers = [r1, r2, r3, r4]
counting_hubs = [c1, c2, c3, c4]
def test_tasklet():
yield 30
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('Sending ping from h2 to h1 - it should get through')
h2.ping(h1)
yield 10
if c1.pings != 2:
api.userlog.error("The second ping didn't get through")
sys.exit(1)
yield 10
api.userlog.debug('Silently connecting r2 and h2')
ry.linkTo(r4, latency=2)
yield 20
api.userlog.debug('Sending ping from h1 to h2 - it should get through')
h1.ping(h2)
yield 5
if c2.pings != 1:
api.userlog.error("The first ping didn't get through")
sys.exit(1)
yield 10
api.userlog.debug('Sending ping from h2 to h1 - it should get through')
h2.ping(h1)
yield 5
if c2.pings != 2:
api.userlog.error("The second ping didn't get through")
sys.exit(1)
yield 10
api.userlog.debug('Silently disconnecting r2')
c2.unlinkTo(r4)
c2.unlinkTo(r3)
api.userlog.debug('Waiting for routes to time out')
yield 22
api.userlog.debug(
'Sending ping from h1 to h2 - it should be sent through r1')
h1.ping(h2)
yield 5
if c1.pings != 3:
api.userlog.error('r1 never received ping')
sys.exit(1)
else:
api.userlog.debug('r1 rerouted the ping as expected')
sys.exit(0)
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)
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')
c2 = BlockingHub.create('c2')
c3 = BlockingHub.create('c3')
h1.linkTo(s1)
s1.linkTo(c2)
c2.linkTo(s2)
s2.linkTo(h2)
s1.linkTo(c3)
c3.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 h2.pings != 1:
api.userlog.error("The ping did not get through to h2")
sys.exit(1)
if c2.pings == 1:
api.userlog.debug(
'Ping was sent through s2, dropping routing packets between s1-s2'
)
c2.block_route_packets = True
elif c3.pings == 1:
api.userlog.debug(
'Ping was sent through s3, dropping routing packets between s1-s3'
)
c3.block_route_packets = True
else:
api.userlog.error('Something wierd happened')
yield sim.config.default_switch_type.ROUTE_TIMEOUT - 1
# '-1' since the link h1-s1 has latency 1
# if the test fails for you, try removing this '-1', not sure if it is nitpicking
api.userlog.debug(
'Sending another ping from h1 to h2 - it should take the other path'
)
h1.ping(h2)
yield 5
if h2.pings != 2 or c2.pings != 1 or c3.pings != 1:
api.userlog.error("The second ping did not take the correct path")
sys.exit(1)
api.userlog.debug("Paths expired and replaced correctly")
sys.exit(0)
api.run_tasklet(test_tasklet)
def launch():
h1 = NoPacketHost.create('h1')
h2 = GetPacketHost.create('h2')
h3 = GetPacketHost.create('h3')
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')
c1 = CountingHub.create('c1')
c2 = CountingHub.create('c2')
c3 = CountingHub.create('c3')
c4 = CountingHub.create('c4')
c5 = CountingHub.create('c5')
h1.linkTo(s4, latency=1)
h2.linkTo(s5, latency=1)
h3.linkTo(s6, latency=1)
s4.linkTo(c1, latency=1)
s4.linkTo(c3, latency=1)
c1.linkTo(s1, latency=1)
c3.linkTo(s3, latency=10)
s1.linkTo(s3, latency=8)
s1.linkTo(c5, latency=1)
c5.linkTo(s5, latency=1)
s1.linkTo(c2, latency=1)
s5.linkTo(s2, latency=1)
c2.linkTo(s2, latency=1)
s3.linkTo(s2, latency=8)
s3.linkTo(c4, latency=10)
c4.linkTo(s6, latency=10)
s2.linkTo(s6, latency=1)
def test_tasklet():
yield 20
api.userlog.debug('Sending ping from h1 to h2')
h1.ping(h2)
yield 5
if c1.pings == 1 and c2.pings == 0 and c3.pings == 0 and c4.pings == 0 and c5.pings == 1:
api.userlog.debug('The ping took the right path')
good = True
elif not c1.pings == 1 or not c2.pings == 0 or not c3.pings == 0 or not c4.pings == 0 or not c5.pings == 1:
api.userlog.error('The ping took the wrong path')
good = False
else:
api.userlog.error('Something strange happened to the ping')
good = False
api.userlog.debug('Sending ping from h1 to h3')
h1.ping(h3)
yield 5
if c1.pings == 2 and c2.pings == 1 and c3.pings == 0 and c4.pings == 0 and c5.pings == 1:
api.userlog.debug('The ping took the right path')
good2 = True
elif not c1.pings == 2 or not c2.pings == 1 or not c3.pings == 0 or not c4.pings == 0 or not c5.pings == 1:
api.userlog.error('The ping took the wrong path')
good2 = False
else:
api.userlog.error('Something strange happened to the ping')
good2 = False
import sys
sys.exit(0 if good and good2 else 1)
api.run_tasklet(test_tasklet)
