Python: Subinterfaces on Linux Hosts

Python: Script to create Sub-Interfaces on Linux Hosts

import pexpect

import time

def config_subintf(host,passw,intf,start_vlan,start_ip,no_intf):

    ssh =pexpect.spawn(host)

    ssh.expect('.*password:', timeout=300)

    print 'starting'

    ssh.sendline(passw)

    print ssh.readline()

    time.sleep(120)

    ssh.expect('.*$', timeout= 300)

    print ssh.readline()

   

    ssh.sendline('sudo su')

    print ssh.readline() 

    i = ssh.expect(['.*:','.*#'], timeout= 300)

    print i

    if i == 0:

       ssh.sendline(passw)

       print ssh.readline()

       ssh.expect('.*#', timeout= 300)

    if i == 1:

       pass

    print ssh.before

    print ssh.after

    time.sleep(10)

    ip = start_ip.split('.')

    ip = [ int(x) for x in ip ]

    for x in range(no_intf):

        ssh.sendline('vconfig add {} {}'.format(intf,start_vlan))

        ssh.expect('.*#',timeout=300)

        ssh.sendline('ifconfig {}.{} up'.format(intf,start_vlan))

        ssh.expect('.*#',timeout=300)

        ssh.sendline('ifconfig {}.{} {}.{}.{}.{}/24'.format(intf,start_vlan,ip[0],ip[1],ip[2],ip[3]))

            ssh.expect('.*#',timeout=300)

        start_vlan = start_vlan + 1

        if int(ip[2]) <= 255:

           ip[2] = ip[2] + 1

           print ip[2]

        elif ip[1] <= 255:

           ip[2] = 1

           ip[1] = ip[1]+1

           print ip[1]

   

    ssh.sendline('ifconfig')

    print ssh.readline()

    print ssh.before

    print ssh.after

    ssh.expect('.*$',timeout=300)

    print ssh.readline()

    print ssh.before

    print ssh.after

   

    ssh.close()

if __name__ == "__main__":

    import argparse

    parser = argparse.ArgumentParser(description='Python script to create subinterfaces on linux hosts, plz make sure vlan module installed on host before run this')

    parser.add_argument('host', action="store", type= str)

    parser.add_argument('passw', action="store", type= str)

    parser.add_argument('intf', action="store", type=str)

    parser.add_argument('start_vlan', action = "store", type= int)

    parser.add_argument('start_ip', action="store", type= str)

    parser.add_argument('no_intf', action="store", type= int)

    input = parser.parse_args()

    host = input.host

    passw = input.passw

    intf = input.intf

    start_vlan = input.start_vlan

    start_ip = input.start_ip

    no_intf = input.no_intf

    config_subintf(host,passw,intf,start_vlan,start_ip,no_intf)