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FRRouting (FRR)

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FRRouting — a software routing suite for BGP, OSPF, IS-IS, and more

OSS scale score 276.4OSS health 81Update pace 307 commits/30d
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Stars
4,295
Primary language
C
License
GPL-2.0-or-later
Repository last updated
Sep 18, 2026

Overview

FRRouting (FRR) implements IPv4 and IPv6 routing protocols including BGP, OSPFv2/v3, IS-IS, RIP, PIM, LDP, BFD, and VRRP on Linux and BSD. It can provide the routing control plane for general-purpose servers, network appliances, and data-center fabrics.

Features and best fit

Based on official documentation; not hands-on tested · Content checked:

Run multiple routing protocols in one suite

FRR provides protocol daemons for BGP, OSPF, IS-IS, PIM, LDP, BFD, Babel, VRRP, and other routing functions that can be combined as needed.

Sources: [2][4]

Manage configuration through vtysh and evolving mgmtd/YANG support

Operators can use vtysh for CLI-driven administration while the project continues migration toward centralized YANG configuration through mgmtd.

Sources: [2][4]

For Linux/BSD routing control planes and network appliances

FRR fits BGP data-center fabrics, dynamic OSPF/IS-IS routing, EVPN/MPLS networks, and software-based routing appliances.

Sources: [2][4]

Validate route changes and mixed licensing carefully

Routing configuration can immediately affect reachability and route advertisements, so changes should be tested in an isolated lab. The project also uses per-file SPDX licenses and describes the composite binary as generally distributable under GPLv2 or later.

Sources: [2][3]

Official sources

  1. [1]FRRouting/frr repository(2026-09-20)
  2. [2]FRRouting README(2026-09-20)
  3. [3]FRRouting license overview(2026-09-20)
  4. [4]FRRouting documentation(2026-09-20)
Supplemental curator note

FRR is a production routing control plane for Linux and BSD systems. Configuration changes can directly affect real networks, so start with read-only `show` commands and test BGP/OSPF neighbor configuration in an isolated lab. Licensing is per-file; the project describes the composite binary as generally distributable under GPLv2 or later.

Try it in 3 steps

  1. 1

    Install FRR in a test Linux environment

    Use the official package instructions in a VM or isolated routing lab rather than a production network.

    https://docs.frrouting.org/en/latest/installation.html
  2. 2

    Inspect the current routing table

    Start with read-only state inspection before changing any routing configuration.

    sudo vtysh -c "show ip route"
  3. 3

    Inspect BGP status

    In a lab where BGP is enabled, review neighbor status. Test route advertisements and neighbor configuration in isolation before production use.

    sudo vtysh -c "show bgp summary"
Check the official README

Growth

Growth trends · Last 30 days

4,295 Stars

Trend data is still being collected.

Development activity

Last 90 days · weekly

Commits (last 30 days)
307
Open PRs
403
Issues opened
139
Issues closed
105
PRs opened
814
PRs merged
605

Issues

139 / 105

Jun 23Sep 20
Issues openedIssues closed

Pull requests

814 / 605

Jun 23Sep 20
PRs openedPRs merged

Maintenance

Median first response
6.2 hr
Issue response rate
30.3% (30/99)

Based on up to the 100 newest issues opened by external users in the last 90 days. A first comment from an OWNER, MEMBER, or COLLABORATOR counts as a response; issues whose full comment history cannot be checked are excluded. The median and response rate update weekly.

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GitHub data

GitHub dataView detailed GitHub data
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GitHub Topics

  • routing
  • networking
  • bgp
  • rip
  • ripng
  • ospf
  • is-is
  • pim
  • msdp
  • ldp
  • nhrp
  • mpls
Stars
4,295
Forks
1,616
Watchers
149
Open issues
405
Contributors
295
Primary language
C
Repository last updated
Sep 18, 2026
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