Cisco Scale Config Generator

Simple Python2 based scale config generator for generating scale configs using a template file for cisco and cisco like devices.

Github project repository location
https://github.com/saravana815/scale_config_generator.git

This script currently supports

Incrementing Numbers
Incrementing IP address
Incrementing IPv6 address for whole two quads such as [0000:0000] to [FFFF:FFFF]

Installation

[sargandh:SARGANDH-3QLQC]$ git clone https://github.com/saravana815/scale_config_generator.git
[sargandh:SARGANDH-3QLQC]$ cd scale_config_generator
[sargandh:SARGANDH-3QLQC]$ python scale_config.py -h
usage: scale_config.py [-h] -f FILE -c COUNT [-o OUTFILE]

optional arguments:
  -h, --help                      show this help message and exit
  -f FILE, --file FILE            input config file
  -c COUNT, --count COUNT         number of times to scale the configs
  -o OUTFILE, --outfile OUTFILE   output file name for generated configs
[sargandh:SARGANDH-3QLQC]$

Example usage 1

Template file name – config.txt.

Default output config file – config_out.txt.

[sargandh:SARGANDH-3QLQC]$ cat config.txt

interface GigabitEthernet0/0/3.[2000]             # Number increment
 encapsulation dot1Q [2000]
 ip address 20.0.[0.2] 255.255.255.252            # IP address increment
 ip address 21.[0.0.2] 255.255.255.252 secondary  # IP address increment
 ip address [22.0.0.2] 255.255.255.252 secondary  # IP address increment
 ipv6 address 2001:[11AA:22BB]::2/64              # IPv6 address increment

[sargandh:bgl-ads-1214]$ ./scale_config.py
usage: scale_config.py [-h] -f FILE -c COUNT # -c number of iterations to run

[sargandh:SARGANDH-3QLQC]$ python scale_config.py -f config.txt -c 4
 interface GigabitEthernet0/0/3.2000
  encapsulation dot1Q 2000
  ip address 20.0.0.2 255.255.255.252
  ip address 21.0.0.2 255.255.255.252 secondary
  ip address 22.0.0.2 255.255.255.252 secondary
  ipv6 address 2001:11AA:22BB::2/64

 interface GigabitEthernet0/0/3.2001
  encapsulation dot1Q 2001
  ip address 20.0.0.3 255.255.255.252
  ip address 21.0.0.3 255.255.255.252 secondary
  ip address 22.0.0.3 255.255.255.252 secondary
  ipv6 address 2001:11AA:22BC::2/64

 interface GigabitEthernet0/0/3.2002
  encapsulation dot1Q 2002
  ip address 20.0.0.4 255.255.255.252
  ip address 21.0.0.4 255.255.255.252 secondary
  ip address 22.0.0.4 255.255.255.252 secondary
  ipv6 address 2001:11AA:22BD::2/64

 interface GigabitEthernet0/0/3.2003
  encapsulation dot1Q 2003
  ip address 20.0.0.5 255.255.255.252
  ip address 21.0.0.5 255.255.255.252 secondary
  ip address 22.0.0.5 255.255.255.252 secondary
  ipv6 address 2001:11AA:22BE::2/64

[sargandh:SARGANDH-3QLQC]$ ls -lh config_out.txt
-rwxrwxrwx 1 sargandh sargandh 474 Dec 21 22:11 config_out.txt
[sargandh:SARGANDH-3QLQC]$

Example usage 2

Template file name – config2.txt

Increment number by value more than 1 from a starting number to end number

Increment IP address, IPv6 address by value more than one

[sargandh:SARGANDH-3QLQC]$ cat config2.txt

interface GigabitEthernet0/0/3.[2000,2,2002]    # Increment number from 2000 to 2002 by 2 for every iteration
 encapsulation dot1Q [2000,2,2002]
 ip address 20.0.[0.2,4] 255.255.255.252        # Increment IP address by 4 for every iteration
 ipv6 address 2001:[11AA:22BB,4]::2/64          # Increment IPv6 address by 4 for every iteration

[sargandh:SARGANDH-3QLQC]$ python scale_config.py -f config2.txt -c 4
interface GigabitEthernet0/0/3.2000
 encapsulation dot1Q 2000
 ip address 20.0.0.2 255.255.255.252
 ipv6 address 2001:11AA:22BB::2/64

interface GigabitEthernet0/0/3.2002
 encapsulation dot1Q 2002
 ip address 20.0.0.6 255.255.255.252
 ipv6 address 2001:11AA:22BF::2/64

interface GigabitEthernet0/0/3.2000
 encapsulation dot1Q 2000
 ip address 20.0.0.10 255.255.255.252
 ipv6 address 2001:11AA:22C3::2/64

interface GigabitEthernet0/0/3.2002
 encapsulation dot1Q 2002
 ip address 20.0.0.14 255.255.255.252
 ipv6 address 2001:11AA:22C7::2/64

[sargandh:SARGANDH-3QLQC]$

Linux dhcp client simulation tool

Developed a DHCP client simulation tool sometime back. The tool can be used for testing DHCP server which are part of networking devices such as routers, IP DSLAM, etc.

The tool needs a linux environment with root login since it uses promiscuous sockets for sending and receiving DHCP packets.

Download link – dhtest.tgz (Legacy code)

Latest code – Github repo : https://github.com/saravana815/dhtest

Github download link: https://github.com/saravana815/dhtest/archive/master.zip

Basic usage

root@sargandh-laptop:/home/sargandh/Desktop/dhtest-1.1# ./dhtest
Usage: ./dhtest [ options ] -m mac_address
-r, –release # Releases obtained DHCP IP for corresponding MAC
-I, –option50-ip [ IP_address ] # Option 50 IP address on DHCP discover
-o, –option60-vci [ VCI_string ] # Vendor Class Idendifier string
-v, –vlan [ vlan_id ] # VLAN ID. Range(2 – 4094)
-t, –tos [ TOS_value ] # IP header TOS value
-i, –interface [ interface ] # Interface to use. Default eth0
-T, –timeout [ cmd_timeout ] # Command returns within specified timout in seconds
-b, –bind-ip # Listens on the obtained IP. Supported protocols – ARP and ICMP
-k, –bind-timeout [ timeout ] # Listen timout in seconds. Default 3600 seconds
-f, –bcast_flag # Sets broadcast flag on DHCP discover and request
-V, –verbose # Prints DHCP offer and ack details
dhtest version 1.1

root@sargandh-laptop:/home/sargandh/Desktop/dhtest-1.1# ./dhtest -m 00:00:11:22:33:44
DHCP discover sent – Client MAC : 00:00:11:22:33:44
DHCP offer received – Offered IP : 10.0.2.16
DHCP request sent – Client MAC : 00:00:11:22:33:44
DHCP ack received – Acquired IP: 10.0.2.16

root@sargandh-laptop:/home/sargandh/Desktop/dhtest-1.1# ./dhtest -m 00:00:11:22:33:44 -V
DHCP discover sent – Client MAC : 00:00:11:22:33:44
DHCP offer received – Offered IP : 10.0.2.16

DHCP offer details
———————————————————-
DHCP offered IP from server – 10.0.2.16
Next server IP(Probably TFTP server) – 10.0.2.4
Subnet mask – 255.255.255.0
Router/gateway – 10.0.2.2
DNS server – 72.163.128.140
DNS server – 171.70.168.183
Lease time – 1 Days 0 Hours 0 Minutes
DHCP server – 10.0.2.2
———————————————————-

DHCP request sent – Client MAC : 00:00:11:22:33:44
DHCP ack received – Acquired IP: 10.0.2.16

DHCP ack details
———————————————————-
DHCP offered IP from server – 10.0.2.16
Next server IP(Probably TFTP server) – 10.0.2.4
Subnet mask – 255.255.255.0
Router/gateway – 10.0.2.2
DNS server – 72.163.128.140
DNS server – 171.70.168.183
Lease time – 1 Days 0 Hours 0 Minutes
DHCP server – 10.0.2.2
———————————————————-

root@sargandh-laptop:/home/sargandh/Desktop/dhtest-1.1#

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