def demonstrate(device_name):
"""
Apply function 'static_route_create' to the specified device.
Choose a destination that does not already exist.
Choose a next-hop on the same sub-network as an existing interface.
If the next-hop is unknown then use any valid ip-address.
"""
print('Select a destination network for which a static route does not exist.')
destination_network_iterator = destination_network_generator()
while True:
destination_network = next(destination_network_iterator)
print('static_route_exists(%s, %s)' % (device_name, destination_network))
exists = static_route_exists(device_name, destination_network)
print(exists)
print()
if not exists:
break
print('Determine which interface is on the management plane (to avoid it).')
print('device_control(%s)' % device_name)
device_mgmt = device_control(device_name)
print_table(device_mgmt)
print()
print('Determine ip-address and network-mask of every interface.')
print('interface_configuration_tuple(%s)' % device_name)
interface_config_list = interface_configuration_tuple(device_name)
print_table(interface_config_list)
print()
for interface_config in interface_config_list:
if interface_config.address is None:
# Skip network interface with unassigned IP address.
continue
if interface_config.address == device_mgmt.address:
# Do not configure static routes on the 'management plane'.
continue
if 'Loopback' in interface_config.name:
# Do not configure static routes on the 'control plane'.
continue
print('Determine next-hop for a network interface.')
interface_network = interface_config.ip_network
next_hop_address = match(device_name, interface_network)
if next_hop_address is None:
print('Next-hop for %s/%s %s/%s is outside the known topology.' % (device_name, interface_config.name, interface_config.address, interface_config.netmask))
next_hop_address = interface_network.network_address
if next_hop_address == interface_config.ip_interface:
next_hop_address += 1
print('Assume that next-hop for %s/%s %s/%s is %s.' % (device_name, interface_config.name, interface_config.address, interface_config.netmask, next_hop_address))
else:
print('Next-hop for %s/%s %s/%s is %s.' % (device_name, interface_config.name, interface_config.address, interface_config.netmask, next_hop_address))
print()
print('static_route_create(%s, %s, %s)' % (device_name, destination_network, next_hop_address))
static_route_create(device_name, destination_network, next_hop_address)
return True
return False
def demonstrate(device_name):
''' Apply function 'static_route_exists' to one or more static route destinations for the specified device.'''
destination_network = static_route_fixture.sample_destination(device_name)
print()
print('static_route_exists(' + device_name, destination_network, sep=', ', end=')\n')
print('\t', static_route_exists(device_name, destination_network))
return True
def demonstrate(device_name):
"""
Apply function 'static_route_create' to the specified device.
Choose a destination that does not already exist.
Choose a next-hop on the same sub-network as an existing interface.
If the next-hop is unknown then use any valid ip-address.
"""
print('Select a destination network for which a static route does not exist.')
destination_network_iterator = destination_network_generator()
while True:
destination_network = next(destination_network_iterator)
print('static_route_exists(%s, %s)' % (device_name, destination_network))
exists = static_route_exists(device_name, destination_network)
print(exists)
print()
if not exists:
break
print('Determine which interface is on the management plane (to avoid it).')
print('device_control(%s)' % device_name)
device_mgmt = device_control(device_name)
print_table(device_mgmt)
print()
print('Determine ip-address and network-mask of every interface.')
print('interface_configuration_tuple(%s)' % device_name)
interface_config_list = interface_configuration_tuple(device_name)
print_table(interface_config_list)
print()
for interface_config in interface_config_list:
if interface_config.address is None:
# Skip network interface with unassigned IP address.
continue
if interface_config.address == device_mgmt.address:
# Do not configure static routes on the 'management plane'.
continue
if 'Loopback' in interface_config.name:
# Do not configure static routes on the 'control plane'.
continue
print('Determine next-hop for a network interface.')
interface_network = interface_config.ip_network
next_hop_address = match(device_name, interface_network)
if next_hop_address is None:
print('Next-hop for %s/%s %s/%s is outside the known topology.' % (device_name, interface_config.name, interface_config.address, interface_config.netmask))
next_hop_address = interface_network.network_address
if next_hop_address == interface_config.ip_interface:
next_hop_address += 1
print('Assume that next-hop for %s/%s %s/%s is %s.' % (device_name, interface_config.name, interface_config.address, interface_config.netmask, next_hop_address))
else:
print('Next-hop for %s/%s %s/%s is %s.' % (device_name, interface_config.name, interface_config.address, interface_config.netmask, next_hop_address))
print()
print('static_route_create(%s, %s, %s)' % (device_name, destination_network, next_hop_address))
static_route_create(device_name, destination_network, next_hop_address)
return True
return False
def delete_static_route(device_name, destination_network, print_tag):
#if static route exist, delete it first
if static_route_exists(device_name, destination_network):
static_route_delete(device_name, destination_network)
if print_tag == 1:
print('remove route to %s' % destination_network,
'in %s' % device_name)
def demonstrate(device_name):
''' Apply function 'static_route_exists' to one or more static route destinations for the specified device.'''
destination_network = static_route_fixture.sample_destination(device_name)
print()
print('static_route_exists(' + device_name,
destination_network,
sep=', ',
end=')\n')
print('\t', static_route_exists(device_name, destination_network))
return True
def add_static_route(device_name, destination_network, next_hop_address, print_tag):
#if static route exist, delete it first
if static_route_exists(device_name, destination_network):
static_route_delete(device_name, destination_network)
if print_tag == 1:
print('remove route to %s' % destination_network, 'in %s' % device_name)
#add the static route
static_route_create(device_name, destination_network, next_hop_address)
if print_tag == 1:
print('add route to %s' % destination_network, ' next_hop: %s' % next_hop_address, 'in %s' % device_name)
def add_static_route(device_name, destination_network, next_hop_address,
print_tag):
#if static route exist, delete it first
if static_route_exists(device_name, destination_network):
static_route_delete(device_name, destination_network)
if print_tag == 1:
print('remove route to %s' % destination_network,
'in %s' % device_name)
#add the static route
static_route_create(device_name, destination_network, next_hop_address)
if print_tag == 1:
print('add route to %s' % destination_network,
' next_hop: %s' % next_hop_address, 'in %s' % device_name)
def demonstrate(device_name):
"""
Apply function 'static_route_exists' to the specified device for each destination in the list.
"""
destination_network_iterator = destination_network_generator()
while True:
destination_network = next(destination_network_iterator)
print('static_route_exists(%s, %s)' % (device_name, destination_network))
exists = static_route_exists(device_name, destination_network)
print(exists)
if not exists:
return True
else:
print()
def demonstrate(device_name):
"""
Apply function 'static_route_exists' to the specified device for each destination in the list.
"""
destination_network_iterator = destination_network_generator()
while True:
destination_network = next(destination_network_iterator)
print('static_route_exists(%s, %s)' %
(device_name, destination_network))
exists = static_route_exists(device_name, destination_network)
print(exists)
if not exists:
return True
else:
print()
def new_destination(device_name, interface_network):
""" Determine a static route destination that does not exist on the specified device. """
destination_network = next_subnet(interface_network)
while static_route_exists(device_name, destination_network):
destination_network = next_subnet(destination_network)
return destination_network
def new_destination(device_name, interface_network):
""" Determine a static route destination that does not exist on the specified device. """
destination_network=next_subnet(interface_network)
while static_route_exists(device_name, destination_network):
destination_network=next_subnet(destination_network)
return destination_network
def delete_static_route(device_name, destination_network, print_tag):
#if static route exist, delete it first
if static_route_exists(device_name, destination_network):
static_route_delete(device_name, destination_network)
if print_tag == 1:
print('remove route to %s' % destination_network, 'in %s' % device_name)
