FRRouting

Free Range Routing or FRRouting or FRR is a network routing software suite running on Unix-like platforms, particularly Linux, Solaris, OpenBSD, FreeBSD and NetBSD. It was created as a fork from Quagga. FRRouting is distributed under the terms of the GNU General Public License v2 (GPL2).

Supported protocols
FRR provides implementations of the following protocols: It also provides alpha implementations of:
 * Open Shortest Path First (OSPF)
 * Routing Information Protocol (RIP)
 * Border Gateway Protocol (BGP)
 * IS-IS
 * Label Distribution Protocol (LDP)
 * Protocol Independent Multicast (PIM)
 * Babel
 * Bidirectional Forwarding Detection (BFD)
 * Ethernet VPN (EVPN)
 * Next Hop Resolution Protocol (NHRP)
 * Enhanced Interior Gateway Routing Protocol (EIGRP)

History
FRRouting broke away from the free routing software Quagga. Several Quagga contributors, including Cumulus Networks, 6WIND, and BigSwitch Networks, citing frustration about the pace of development, decided to fork the software and form their own community.