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Not getting BGP Notification with Optional Attribute Error

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0

i am working with BGP implementation with Ubuntu, for the testing purpose i want to get 'notification message' indicating 'optional attribute error'.

i am using python socket programming.here in my code, I am first sending open message than getting a response in terms of open-keepalive and than sending keepalive to establish the BGP session between Router-A and DUT.

anyway, after connection establishment I am sending malformed update packet ( having a malformation in the optional attribute), it supposed to send notification message with error 'optional attribute error', but it is not sending that error message. now my concern is how to receive that 'Notification Message' having error code ' Optional Attribute Error'.

#!/usr/bin/env python3



import socket

import time

BGP_IP = '20.0.0.20'



MSG1 = (b'xffxffxffxffxffxffxffxff'

        b'xffxffxffxffxffxffxffxff'

        b'x00x35'

        b'x01'                  #open message

        b'x04'

        b'x00x64'

        b'x00xb4'

        b'x01x01x01x01'

        b'x18'

        b'x02x06x01x04x00x01x00x01x02x02x80'

        b'x00x02x02x02x00x02x06x41x04x00x00x00x64')



MSG2 = (b'xffxffxffxffxffxffxffxff'

        b'xffxffxffxffxffxffxffxff'

        b'x00x13'

        b'x04')                #keepalive 



MSG3 = (b'xffxffxffxffxffxffxffxff'     # First 8 bytes of marker

        b'xffxffxffxffxffxffxffxff'     # last 8 bytes

        b'x00x36'                             # length

        b'x02'                                 # update packate

        b'x00x00'                             # withdrawn routes

        b'x00x1c'

        b'x40x01x01x00'

        b'x50x02x00x06x02x01x00x00x00x64'

        b'x40x03x04x14x00x00x0a'

        b'x80x04x04x00px00x00x00'  #(malformed optional attribs)

        b'x10x0a0')





def main():

     sock = socket.socket(socket.AF_INET, socket.SOCK_STREAM)

     print("Socket created")

     sock.connect((BGP_IP, 179))

     print("Socket connected")

     sock.send(MSG1)   #open message

     time.sleep(5)

     sock.send(MSG2)   #keepalive

     time.sleep(5)

     print("connection has been established")

     sock.send(MSG3)   #malformed update

     while True:

         data = sock.recv(1)

         if data==b'':

             print("Connection closed or reset")

             break

        print("Received:", data)



sock.close()



if __name__ == "__main__":

    main() 

routing python socket bgp

share|improve this question

asked 1 hour ago

dharmendra kariyadharmendra kariya

1

New contributor

dharmendra kariya is a new contributor to this site. Take care in asking for clarification, commenting, and answering.
Check out our Code of Conduct.

add a comment | 

0

i am working with BGP implementation with Ubuntu, for the testing purpose i want to get 'notification message' indicating 'optional attribute error'.

i am using python socket programming.here in my code, I am first sending open message than getting a response in terms of open-keepalive and than sending keepalive to establish the BGP session between Router-A and DUT.

anyway, after connection establishment I am sending malformed update packet ( having a malformation in the optional attribute), it supposed to send notification message with error 'optional attribute error', but it is not sending that error message. now my concern is how to receive that 'Notification Message' having error code ' Optional Attribute Error'.

#!/usr/bin/env python3



import socket

import time

BGP_IP = '20.0.0.20'



MSG1 = (b'xffxffxffxffxffxffxffxff'

        b'xffxffxffxffxffxffxffxff'

        b'x00x35'

        b'x01'                  #open message

        b'x04'

        b'x00x64'

        b'x00xb4'

        b'x01x01x01x01'

        b'x18'

        b'x02x06x01x04x00x01x00x01x02x02x80'

        b'x00x02x02x02x00x02x06x41x04x00x00x00x64')



MSG2 = (b'xffxffxffxffxffxffxffxff'

        b'xffxffxffxffxffxffxffxff'

        b'x00x13'

        b'x04')                #keepalive 



MSG3 = (b'xffxffxffxffxffxffxffxff'     # First 8 bytes of marker

        b'xffxffxffxffxffxffxffxff'     # last 8 bytes

        b'x00x36'                             # length

        b'x02'                                 # update packate

        b'x00x00'                             # withdrawn routes

        b'x00x1c'

        b'x40x01x01x00'

        b'x50x02x00x06x02x01x00x00x00x64'

        b'x40x03x04x14x00x00x0a'

        b'x80x04x04x00px00x00x00'  #(malformed optional attribs)

        b'x10x0a0')





def main():

     sock = socket.socket(socket.AF_INET, socket.SOCK_STREAM)

     print("Socket created")

     sock.connect((BGP_IP, 179))

     print("Socket connected")

     sock.send(MSG1)   #open message

     time.sleep(5)

     sock.send(MSG2)   #keepalive

     time.sleep(5)

     print("connection has been established")

     sock.send(MSG3)   #malformed update

     while True:

         data = sock.recv(1)

         if data==b'':

             print("Connection closed or reset")

             break

        print("Received:", data)



sock.close()



if __name__ == "__main__":

    main() 

routing python socket bgp

share|improve this question

asked 1 hour ago

dharmendra kariyadharmendra kariya

1

New contributor

dharmendra kariya is a new contributor to this site. Take care in asking for clarification, commenting, and answering.
Check out our Code of Conduct.

add a comment | 

i am working with BGP implementation with Ubuntu, for the testing purpose i want to get 'notification message' indicating 'optional attribute error'.

i am using python socket programming.here in my code, I am first sending open message than getting a response in terms of open-keepalive and than sending keepalive to establish the BGP session between Router-A and DUT.

anyway, after connection establishment I am sending malformed update packet ( having a malformation in the optional attribute), it supposed to send notification message with error 'optional attribute error', but it is not sending that error message. now my concern is how to receive that 'Notification Message' having error code ' Optional Attribute Error'.

#!/usr/bin/env python3



import socket

import time

BGP_IP = '20.0.0.20'



MSG1 = (b'xffxffxffxffxffxffxffxff'

        b'xffxffxffxffxffxffxffxff'

        b'x00x35'

        b'x01'                  #open message

        b'x04'

        b'x00x64'

        b'x00xb4'

        b'x01x01x01x01'

        b'x18'

        b'x02x06x01x04x00x01x00x01x02x02x80'

        b'x00x02x02x02x00x02x06x41x04x00x00x00x64')



MSG2 = (b'xffxffxffxffxffxffxffxff'

        b'xffxffxffxffxffxffxffxff'

        b'x00x13'

        b'x04')                #keepalive 



MSG3 = (b'xffxffxffxffxffxffxffxff'     # First 8 bytes of marker

        b'xffxffxffxffxffxffxffxff'     # last 8 bytes

        b'x00x36'                             # length

        b'x02'                                 # update packate

        b'x00x00'                             # withdrawn routes

        b'x00x1c'

        b'x40x01x01x00'

        b'x50x02x00x06x02x01x00x00x00x64'

        b'x40x03x04x14x00x00x0a'

        b'x80x04x04x00px00x00x00'  #(malformed optional attribs)

        b'x10x0a0')





def main():

     sock = socket.socket(socket.AF_INET, socket.SOCK_STREAM)

     print("Socket created")

     sock.connect((BGP_IP, 179))

     print("Socket connected")

     sock.send(MSG1)   #open message

     time.sleep(5)

     sock.send(MSG2)   #keepalive

     time.sleep(5)

     print("connection has been established")

     sock.send(MSG3)   #malformed update

     while True:

         data = sock.recv(1)

         if data==b'':

             print("Connection closed or reset")

             break

        print("Received:", data)



sock.close()



if __name__ == "__main__":

    main() 

routing python socket bgp

share|improve this question

asked 1 hour ago

dharmendra kariyadharmendra kariya

1

New contributor

dharmendra kariya is a new contributor to this site. Take care in asking for clarification, commenting, and answering.
Check out our Code of Conduct.

#!/usr/bin/env python3



import socket

import time

BGP_IP = '20.0.0.20'



MSG1 = (b'xffxffxffxffxffxffxffxff'

        b'xffxffxffxffxffxffxffxff'

        b'x00x35'

        b'x01'                  #open message

        b'x04'

        b'x00x64'

        b'x00xb4'

        b'x01x01x01x01'

        b'x18'

        b'x02x06x01x04x00x01x00x01x02x02x80'

        b'x00x02x02x02x00x02x06x41x04x00x00x00x64')



MSG2 = (b'xffxffxffxffxffxffxffxff'

        b'xffxffxffxffxffxffxffxff'

        b'x00x13'

        b'x04')                #keepalive 



MSG3 = (b'xffxffxffxffxffxffxffxff'     # First 8 bytes of marker

        b'xffxffxffxffxffxffxffxff'     # last 8 bytes

        b'x00x36'                             # length

        b'x02'                                 # update packate

        b'x00x00'                             # withdrawn routes

        b'x00x1c'

        b'x40x01x01x00'

        b'x50x02x00x06x02x01x00x00x00x64'

        b'x40x03x04x14x00x00x0a'

        b'x80x04x04x00px00x00x00'  #(malformed optional attribs)

        b'x10x0a0')





def main():

     sock = socket.socket(socket.AF_INET, socket.SOCK_STREAM)

     print("Socket created")

     sock.connect((BGP_IP, 179))

     print("Socket connected")

     sock.send(MSG1)   #open message

     time.sleep(5)

     sock.send(MSG2)   #keepalive

     time.sleep(5)

     print("connection has been established")

     sock.send(MSG3)   #malformed update

     while True:

         data = sock.recv(1)

         if data==b'':

             print("Connection closed or reset")

             break

        print("Received:", data)



sock.close()



if __name__ == "__main__":

    main() 

share|improve this question

asked 1 hour ago

dharmendra kariyadharmendra kariya

1

New contributor

dharmendra kariya is a new contributor to this site. Take care in asking for clarification, commenting, and answering.
Check out our Code of Conduct.

share|improve this question

asked 1 hour ago

dharmendra kariyadharmendra kariya

1

New contributor

dharmendra kariya is a new contributor to this site. Take care in asking for clarification, commenting, and answering.
Check out our Code of Conduct.

asked 1 hour ago

dharmendra kariyadharmendra kariya

1

New contributor

dharmendra kariya is a new contributor to this site. Take care in asking for clarification, commenting, and answering.
Check out our Code of Conduct.

asked 1 hour ago

dharmendra kariyadharmendra kariya

1