def get_timeUp_SNMP(router, community_name):
errorIndication, errorStatus, errorIndex, varBinds = next(
getCmd(SnmpEngine(),CommunityData(community_name, mpModel=0),
UdpTransportTarget((router.get_address(), 161)),#Address and port
ContextData(),ObjectType(ObjectIdentity("1.3.6.1.2.1.1.3.0"))))#SysUptime
if errorIndication:
print(errorIndication)
elif errorStatus:
print('%s at %s' % (errorStatus.prettyPrint(),errorIndex and varBinds[int(errorIndex)-1][0] or '?'))
timeUp=varBinds[0].prettyPrint().split("= ",1)[1];
return timeUp
def get_utilization_polling(routers_list, how_much_often, community_name): """Given in input the routers objects list, the interval period and the community name, this function prints out the utilization of each interface for each router. The method used to retrive such information is through SNMP protocol""" n_rel=0; in_utilization=0 out_utilization=0 while True: n_rel=n_rel+1; time.sleep(how_much_often); for router in routers_list: ifs_list=router.get_interfaces(); print '\n###',n_rel, '(Router ',router.get_hostname(),')' timeUp=get_timeUp_SNMP(router, community_name) timeUp_diff=router.get_timeUp_diff(int(timeUp)) for interface in ifs_list: if_id=int(interface.get_id()) if_name=interface.get_name() if_speed=float(interface.get_if_speed()) ifInBytes, ifOutBytes = get_in_out_bytes_SNMP(router.get_address(), if_id, community_name) delta_ifInBytes=int(ifInBytes)- interface.get_old_in_byte() delta_ifOutBytes=int(ifOutBytes)-interface.get_old_out_byte() debug=0 if(debug): print 'Interface: ',interface.get_name() print '[NEW]','IN_Bytes: ', ifInBytes, 'OUT_Bytes: ',ifOutBytes, 'Time_Up: ', timeUp print '[OlD]','IN_Bytes: ', interface.get_old_in_byte(), 'OUT_Bytes: ',interface.get_old_out_byte(), 'Time_Up: ', router.get_old_timeUp() print 'Delta values: ', delta_ifInBytes, delta_ifOutBytes, timeUp_diff interface.set_old_in_byte(ifInBytes) interface.set_old_out_byte(ifOutBytes) ##The utilization takes into account also the packets get from SNMP if(n_rel>1): format(in_utilization,'.3f') format(out_utilization,'.3f') in_utilization=((delta_ifInBytes)*8*100)/(if_speed*(float(timeUp_diff)/100)); out_utilization=((delta_ifOutBytes)*8*100)/(if_speed*(float(timeUp_diff)/100)); ##Some times the shown utilization is bigger than one. This it could be due to buffer o burst packets incoming. In order to avoid this kind of situation, it will be one if it is greater than one. #if (in_utilization>100): in_utilization=100 #if (out_utilization>100): out_utilization=100 print '(#', n_rel, ')', ' The in utilization ', if_name,'interface (ID:', if_id,') is ', in_utilization, '% (if speed: ',if_speed,' )'; print '(#', n_rel, ')', ' The out utilization ', if_name,'interface (ID:', if_id,') is ', out_utilization, '% (if speed: ',if_speed,' )\n';
def get_timeUp_SNMP(router, community_name):
"""Given the router object in input and the community name, this function returns, through the SNMP protocol, the router system time up"""
errorIndication, errorStatus, errorIndex, varBinds = next(
getCmd(SnmpEngine(),CommunityData(community_name, mpModel=0),
UdpTransportTarget((router.get_address(), SNMP_DEFAULT_PORT)),
ContextData(),ObjectType(ObjectIdentity(OID_SYSTEM_TIMEUP))))#SysUptime
if errorIndication:
print(errorIndication)
elif errorStatus:
print('%s at %s' % (errorStatus.prettyPrint(),errorIndex and varBinds[int(errorIndex)-1][0] or '?'))
timeUp=varBinds[0].prettyPrint().split("= ",1)[1];
return timeUp
def get_utilization_polling(routers_list, how_much_often, community_name):
n_rel = 0
in_utilization = 0
out_utilization = 0
while True:
n_rel = n_rel + 1
time.sleep(how_much_often)
for router in routers_list:
ifs_list = router.get_interfaces()
print "\n###", n_rel, "(Router ", router.get_hostname(), ")"
timeUp = get_timeUp_SNMP(router, community_name)
timeUp_diff = router.get_timeUp_diff(int(timeUp))
for interface in ifs_list:
if_id = int(interface.get_id())
if_name = interface.get_name()
if_speed = float(interface.get_if_speed())
ifInBytes, ifOutBytes = get_in_out_bytes_SNMP(router.get_address(), if_id, community_name)
delta_ifInBytes = int(ifInBytes) - interface.get_old_in_byte()
delta_ifOutBytes = int(ifOutBytes) - interface.get_old_out_byte()
debug = 0
if debug:
print "Interface: ", interface.get_name()
print "[NEW]", "IN_Bytes: ", ifInBytes, "OUT_Bytes: ", ifOutBytes, "Time_Up: ", timeUp
print "[OlD]", "IN_Bytes: ", interface.get_old_in_byte(), "OUT_Bytes: ", interface.get_old_out_byte(), "Time_Up: ", router.get_old_timeUp()
print "Delta values: ", delta_ifInBytes, delta_ifOutBytes, timeUp_diff
interface.set_old_in_byte(ifInBytes)
interface.set_old_out_byte(ifOutBytes)
##The utilization takes into account also the packets get from SNMP
if n_rel > 1:
format(in_utilization, ".3f")
format(out_utilization, ".3f")
in_utilization = ((delta_ifInBytes) * 8 * 100) / (if_speed * (timeUp_diff / 100))
out_utilization = ((delta_ifOutBytes) * 8 * 100) / (if_speed * (timeUp_diff / 100))
##Some times the shown utilization is bigger than one. This it could be due to buffer o burst packets incoming. In order to avoid this kind of situation, it will be one if it is greater than one. It is correct this line of thinking ?
# if (in_utilization>100): in_utilization=100
# if (out_utilization>100): out_utilization=100
print "(#", n_rel, ")", " The in utilization ", if_name, "interface (ID:", if_id, ") is ", in_utilization, "% (if speed: ", if_speed, " )"
print "(#", n_rel, ")", " The out utilization ", if_name, "interface (ID:", if_id, ") is ", out_utilization, "% (if speed: ", if_speed, " )\n"
def get_utilization_single_router_polling(single_router, community_name): """##Giving in input the router object and the community name, this funcion returns the utilization from a single router through SNMP polling""" router=single_router[0] n_gets=0 in_utilization=0 out_utilization=0 print 'Router: ',router.get_hostname() while(n_gets<2): ifs_list=router.get_interfaces() timeUp=get_timeUp_SNMP(router, community_name) timeUp_diff=router.get_timeUp_diff(int(timeUp)) for interface in ifs_list:##For each interface in the router will be get the number of input and output byes if_id=int(interface.get_id()) if_name=interface.get_name() if_speed=int(interface.get_if_speed()) ifInBytes, ifOutBytes = get_in_out_bytes_SNMP(router.get_address(), if_id, community_name) delta_ifInBytes=int(ifInBytes)- interface.get_old_in_byte() delta_ifOutBytes=int(ifOutBytes)-interface.get_old_out_byte() debug=0 if(debug): print 'Interface: ',interface.get_name() print '[NEW]','IN_Bytes: ', ifInBytes, 'OUT_Bytes: ',ifOutBytes, 'Time_Up: ', timeUp print '[OlD]','IN_Bytes: ', interface.get_old_in_byte(), 'OUT_Bytes: ',interface.get_old_out_byte(), 'Time_Up: ', router.get_old_timeUp() print 'Delta values: ', delta_ifInBytes, delta_ifOutBytes, timeUp_diff interface.set_old_in_byte(ifInBytes) interface.set_old_out_byte(ifOutBytes) ##The utilization takes into account also the packets get from SNMP format(in_utilization,'.3f') format(out_utilization,'.3f') in_utilization=(float(delta_ifInBytes)*8*100)/(if_speed*float(timeUp_diff)/100); out_utilization=(float(delta_ifOutBytes)*8*100)/(if_speed*float(timeUp_diff)/100); interface.set_in_out_utilization(in_utilization, out_utilization) n_gets=n_gets+1 print '#####',n_gets router.set_interfaces(ifs_list) return router
def get_utilization_single_router_polling(single_router, community_name):
router = single_router[0]
n_gets = 0
in_utilization = 0
out_utilization = 0
print "Router: ", router.get_hostname()
while n_gets < 2:
ifs_list = router.get_interfaces()
timeUp = get_timeUp_SNMP(router, community_name)
timeUp_diff = router.get_timeUp_diff(int(timeUp))
for interface in ifs_list: ##For each interface in the router will be get the number of input and output byes
if_id = int(interface.get_id())
if_name = interface.get_name()
if_speed = int(interface.get_if_speed())
ifInBytes, ifOutBytes = get_in_out_bytes_SNMP(router.get_address(), if_id, community_name)
delta_ifInBytes = int(ifInBytes) - interface.get_old_in_byte()
delta_ifOutBytes = int(ifOutBytes) - interface.get_old_out_byte()
debug = 0
if debug:
print "Interface: ", interface.get_name()
print "[NEW]", "IN_Bytes: ", ifInBytes, "OUT_Bytes: ", ifOutBytes, "Time_Up: ", timeUp
print "[OlD]", "IN_Bytes: ", interface.get_old_in_byte(), "OUT_Bytes: ", interface.get_old_out_byte(), "Time_Up: ", router.get_old_timeUp()
print "Delta values: ", delta_ifInBytes, delta_ifOutBytes, timeUp_diff
interface.set_old_in_byte(ifInBytes)
interface.set_old_out_byte(ifOutBytes)
##The utilization takes into account also the packets get from SNMP
format(in_utilization, ".3f")
format(out_utilization, ".3f")
in_utilization = (float(delta_ifInBytes) * 8 * 100) / (if_speed * (timeUp_diff / 100))
out_utilization = (float(delta_ifOutBytes) * 8 * 100) / (if_speed * (timeUp_diff / 100))
interface.set_in_out_utilization(in_utilization, out_utilization)
n_gets = n_gets + 1
print "#####", n_gets
router.set_interfaces(ifs_list)
return router
