Network calculator

Problem this snippet solves:

The following is an example how powerful the LTM in terms of hosting web pages w/o the necessity of having a physical web server. This technique can sometimes save you from purchasing or taking up valuable resource on a production web server for hosting a webpage.

This particular iRule throws up a network calculator which was coded by Al Vonkeman (http://www.subnetmask.info./)).

NOTE: The website does initially load up slowly. Thereafter it performs quickly as the processing is client side.

Code :

when HTTP_REQUEST {
if {[HTTP::uri] eq "/calc" } {
set response {  


< SCRIPT type="text/javascript">








Network Calculators












Subnet Mask Calculator
  

< script type="text/javascript"></script>







Enter the TCPIP Network Address:





Force as Class:

Default
Class A
Class B
Class C





Enter the required number of sub-networks:



1
2
4
8
16
32
64
128
256
512
1024
2048
4096
8192
16384
32768
65536
131072
262144
524288
1048576
2097152
4194304
8388608


OR enter the required number of nodes/hosts per network (including network & broadcast addresses)***:

2
                        4
                        8
                        16
                        32
                        64
                        128
                        256
                        512
                        1024
                        2048
                        4096
                        8192
                        16384
                        32768
                        65536
                        131072
                        262144
                        524288
                        1048576
                        2097152
                        4194304
                        8388608
                        16777216
                        33554432
                        67108864
                        134217728
                        268435456
                        536870912
                        1073741824
                        2147483648





Network Class:



Subnet Mask:
 or 


Subnets:





Nodes/Hosts per Network (including network and broadcast addresses)***:




Network/Node Calculator



Enter the Subnet Mask:





Enter the TCPIP Address:






Network:



Node/Host:



Broadcast Address:




IP Address Converter
Enter the dotted decimal TCPIP Address:



 or Enter the binary TCPIP Address:



 or Enter the hex TCPIP Address:




 or Enter the decimal TCPIP Address:






Subnet Mask Converter


Enter the dotted decimal Subnet Mask




or Enter the number of bits in the subnetmask
/







Subnet Mask Inverter


Enter the dotted decimal Subnet Mask




Enter inverted Subnet Mask

 





< SCRIPT type="text/javascript">



}

HTTP::respond 200 content $response "Content-Type" "text/html"
}
}