python telnet to cmts to get ipv6

This is a script to telnet to CMTS-Cisco server to get ipv6 address

The different between python2 and python3 is the byte and str

PYTHON3 we need to use tn.read_until(b"Username:")
PYTHON2 we don't need byte tn.read_until("Username:")

since we need to used byte, so we have to convert to str using decode
we can use decode utf-8 or big5, depend on our OS. If you used CHINESE you have to used BIG5, else ping will not show correct.

Manual Test: 
1.Login to CMTS/Cisco Server
2. used the command to see your ipv6 addres: scm XXX.XXX.XXXX ipv6


1)Method 1 python3 just telnet and get the ipv6 of specfic mac

import getpass
import re
import telnetlib
HOST = "192.168.1.252"
#user = input("Enter your remote account: ")
#password = getpass.getpass()
user='guest'
password='guest'
tn = telnetlib.Telnet(HOST)

tn.read_until(b"Username:")
tn.write(user.encode('ascii') + b"\n")
if password:
    tn.read_until(b"Password:")
    tn.write(password.encode('ascii') + b"\n")

value = tn.read_until(b"Router#")
tn.write(b"scm mac = "AAAA.BBBB.CCCC" ipv6 \n")
value = tn.read_until(b"Router#")
#######################################################
value=value.decode('utf8')
info = "2001"
matchObj = re.match(r'.*'+ info + '(.*)\n',value, re.M|re.DOTALL)
#matchObj=matchObj.decode('big5')

       
if matchObj:
    Ipv6_address = info + matchObj.group(1)
    Ipv6 = Ipv6_address.replace("\n", "")
    print(Ipv6)
    #return Ipv6

else:
    print ("No match!!")  
  

####################################################
        
tn.write(b"exit\n")
#print(tn.read_all().decode('ascii'))

2)Method 2 using function and check telnet reachable or not(python3)

# -*- coding: utf-8 -*-
import telnetlib
import subprocess
import time
import re

def Telnet_Check_reachability(ip):
    ping_count=3
    process = subprocess.Popen(['ping', ip, '-n', str(ping_count)],
                           stdout=subprocess.PIPE,
                           stderr=subprocess.STDOUT)
                      
    process.wait()
    stdout = process.stdout.read()
    stdout=stdout.decode("big5")
    #print stdout
    if "TTL=" in stdout:
        #print "Server reachable"
        successful = 1
    else:
        #print "Server unreachable"
        successful = 0
    return successful

def Login_Telnet(HOST,username,password):
    try:
        tn=""
        reachability=Telnet_Check_reachability(HOST)
        if (reachability==1):
            tn = telnetlib.Telnet(HOST,23)
            tn.read_until(b"Username:")
            #tn.write(username + "\n")
            tn.write(username.encode('ascii') + b"\n")
            if password:
                tn.read_until(b"Password:")
                #tn.write(password + "\n")
                tn.write(password.encode('ascii') + b"\n")
            time.sleep(3)
            return tn
    except IOError:
        print ("Telnet " + HOST + " failed. Please check the server connection")

def telnet_To_CMTS(Client_IP, Client_Name, Client_Pwd, MAC):
    tn =Login_Telnet(Client_IP, Client_Name, Client_Pwd)
    if "telnetlib" in str(tn):
        time.sleep(1)
        value = tn.read_until(b"Router#")
        command = "scm " + MAC + " ipv6\n"
        tn.write(command.encode('ascii') + b"\n")
        #tn.write(command)
        
        value = tn.read_until(b"Router#")
        #print value
        tn.close()
        time.sleep(1)

        info = "2001"
       
        #value=str(value)
        value=value.decode('utf8')
        
        matchObj = re.match(r'.*'+ info + '(.*)\n',value, re.M|re.DOTALL)
       
        if matchObj:
            Ipv6_address = info + matchObj.group(1)
            Ipv6 = Ipv6_address.replace("\n", "")
            return Ipv6
        else:
           print ("No match!!")    
        
    else:
        print ("Telnet failed")
ip ="192.168.1.252"
username = "guest"
password = "guest"
mac = "AAAA.BBBB.CCCC"
new_IPv6 = telnet_To_CMTS(ip, username, password, mac)
print (new_IPv6)

3)Method 3 same as method2 using python2

# -*- coding: utf-8 -*-
import telnetlib
import subprocess
import time
import re

def Telnet_Check_reachability(ip):
    ping_count=3
    process = subprocess.Popen(['ping', ip, '-n', str(ping_count)],
                           stdout=subprocess.PIPE,
                           stderr=subprocess.STDOUT)
                      
    process.wait()
    stdout = process.stdout.read()
    #print stdout
    if "TTL=" in stdout:
        #print "Server reachable"
        successful = 1
    else:
        #print "Server unreachable"
        successful = 0
    return successful

def Login_Telnet(HOST,username,password):
    try:
        tn=""
        reachability=Telnet_Check_reachability(HOST)
        if (reachability==1):
            tn = telnetlib.Telnet(HOST,23)
            tn.read_until("Username:")
            tn.write(username + "\n")
            if password:
                tn.read_until("Password:")
                tn.write(password + "\n")
            time.sleep(3)
            return tn
    except IOError:
        print "Telnet " + HOST + " failed. Please check the server connection"

def telnet_To_CMTS(Client_IP, Client_Name, Client_Pwd, MAC):
    tn =Login_Telnet(Client_IP, Client_Name, Client_Pwd)
    if "telnetlib" in str(tn):
        time.sleep(1)
        value = tn.read_until("Router#")
        command = "scm " + MAC + " ipv6\n"
        tn.write(command)
        value = tn.read_until("Router#")
        #print value
        tn.close()
        time.sleep(1)

        info = "2001"

        matchObj = re.match(r'.*'+ info + '(.*)\n',value, re.M|re.DOTALL)
        if matchObj:
            Ipv6_address = info + matchObj.group(1)
            Ipv6 = Ipv6_address.replace("\n", "")
            return Ipv6

        else:
           print "No match!!"    
    else:
        print "Telnet failed"


ip ="192.168.1.252"
username = "guest"
password = "guest"
mac = "AAAA.BBBB.CCCC"
new_IPv6 = telnet_To_CMTS(ip, username, password, mac)
print new_IPv6

Bash append file to date and time format

Some people would like to export or append your file or log name after the date and time format, like this YYMMDD_MMHHSS.

i have a script it is able to append in this style

@ECHO OFF
set datetime=%date:~0,4%-%date:~8,2%-%date:~0,2%_%time:~0,2%%time:~3,2%%time:~6,2%
set datetime=%datetime: =0%
echo hello >>%datetime%.txt
EXIT

It will output like this "2020-17-20_104919.txt"

if you don't want the second just modify like this

set datetime=%date:~0,4%-%date:~8,2%-%date:~0,2%_%time:~0,2%%time:~3,2%%time:~4,0%

Resource: 

https://stackoverflow.com/questions/1192476/format-date-and-time-in-a-windows-batch-script

Macro-Script

How to used Macro Script(Terateam) to do studd like console:

Example 1 using telnet method to login cisco server or router: 
File name: telnet_cisco.ttl

timeout = 10

connect '192.168.1.252:23 /nossh /T=1'




;Wait a prompt message to login

wait 'Username:'

; Send username

sendln 'cisco'




;Wait for a keyword to enter password

wait 'Password:'

; Send password

sendln 'cisco'

File name: cisco.bat

@echo off

cd C:\Program Files (x86)\teraterm

TTERMPRO /m=D:\Macro_script\telnet_cisco.ttl

pause

How to used it:
Just run the cisco.bat, it will automatic telnet  for you.

Example 2: using serial comport to login your console 
File name: comport.ttl

pause 5

;sendin command

sendln "pacm "

pause 2

;closett will close the screen

closett

File name: comport.bat

@echo off

cd C:\Program Files (x86)\teraterm

TTERMPRO /C=3 /BAUD=115200 /c=3 /m=D:\comport.ttl

pause

How to used it:
Just run the comport.bat, it will automatic accees using terateam to open com-port3 to your DUT console. If  you have different com-port just changed the c=3 to correct com-port. My console port is 3, so I set to 3.