<!DOCTYPE html PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN"> <html> <head> <meta http-equiv="Content-Type" content="text/html;charset=ISO-8859-7"> <title></title> </head> <body text="#000000" bgcolor="#ffffff"> <font face="verdana,arial" size="-1">GNU Zebra is <a href="http://www.gnu.org/philosophy/free-sw.html";>free software</a> that manages TCP/IP based routing protocols. It is released as part of the <a href="http://www.gnu.org/";>GNU Project</a>, and it is distributed under the <a href="http://www.gnu.org/licenses/gpl.html";> GNU General Public License</a>. It supports BGP-4 protocol as described in <a href="http://www.ietf.org/rfc/rfc1771.txt";>RFC1771</a> (A Border Gateway Protocol 4) as well as RIPv1, RIPv2 and OSPFv2. Unlike traditional, monolithic architectures and even the so-called "new modular architectures" that remove the burden of processing routing functions from the cpu and utilize special ASIC chips instead, Zebra software offers true modularity.<br> <br> Zebra is unique in its design in that it has a process for each protocol.<br> ...<br> </font><a href="http://www.zebra.org/what.html";>http://www.zebra.org/what.html</a><br> </body> </html>