Network radix lookup

dsaucez — Sat, 27 Feb 2010 05:54:19 +0000

You frequently need to resolve IP addresses into their longest-match prefix? RADIX_UDP is for you ;-)

The tool loads a list of prefixes into a radix that can be queried in UDP. The syntax is simple, send a UDP segment in text with the first column being the IP, we don't care about the others ;-)

The server will reply with the same text but with the corresponding prefix prepended.

Example,

create a file "prefix.dat" with this content:

192.0.2.0/24
192.0.2.128/25

start the server:

./radix_udp prefix.dat 45005

query it

INL: IP Networking Lab - radix server

Network radix lookup