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FRRouting
Release	April 3, 2017 (2017-04-03)
Stable release	10.7.0[1] / July 1, 2026 (2026-07-01)
Written in	C, Python
Operating system	Linux, OpenBSD, FreeBSD, NetBSD
Predecessor	Quagga
License	GNU GPLv2
Website	frrouting.org
Repository	github.com/FRRouting/frr

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, which itself was a fork of GNU Zebra. FRRouting is distributed under the terms of the GNU General Public License v2 (GPL2).

FRR provides implementations of the following protocols:

• 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)

It also provides alpha implementations of:

• Next Hop Resolution Protocol (NHRP)
• Enhanced Interior Gateway Routing Protocol (EIGRP)

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.^[2]

• BIRD
• OpenOSPFD
• OpenBGPD
• GNU Zebra

• FRRouting Mailing Lists

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