Fedora 24+

This document describes installation from source. If you want to build an RPM, see Packaging Red Hat.

These instructions have been tested on Fedora 24+.

Installing Dependencies

sudo dnf install git autoconf automake libtool make \
  readline-devel texinfo net-snmp-devel groff pkgconfig json-c-devel \
  pam-devel python3-pytest bison flex c-ares-devel python3-devel \
  python3-sphinx perl-core patch systemd-devel

FRR depends on the relatively new libyang library to provide YANG/NETCONF support. Unfortunately, most distributions do not yet offer a libyang package from their repositories. Therefore we offer two options to install this library.

Option 1: Binary Install

The FRR project builds binary libyang packages, which we offer for download here.

Warning

libyang version 0.16.105 or newer is required to build FRR.

Note

The libyang development packages need to be installed in addition to the libyang core package in order to build FRR successfully. Make sure to download and install those from the link above alongside the binary packages.

Depending on your platform, you may also need to install the PCRE development package. Typically this is libpcre-dev or pcre-devel.

Note

For Debian-based systems, the official libyang package requires recent versions of swig (3.0.12) and debhelper (11) which are only available in Debian buster (10). However, libyang packages built on Debian buster can be installed on both Debian jessie (8) and Debian stretch (9), as well as various Ubuntu systems. The python3-yang package will not work, but the other packages (libyang-dev is the one needed for FRR) will.

Option 2: Source Install

Note

Ensure that the libyang build requirements are met before continuing. Usually this entails installing cmake and libpcre-dev or pcre-devel.

git clone https://github.com/CESNET/libyang.git
cd libyang
mkdir build; cd build
cmake -DENABLE_LYD_PRIV=ON -DCMAKE_INSTALL_PREFIX:PATH=/usr \
      -D CMAKE_BUILD_TYPE:String="Release" ..
make
sudo make install

When building libyang version 0.16.x it’s also necessary to pass the -DENABLE_CACHE=OFF parameter to cmake to work around a known bug in libyang.

Building & Installing FRR

Add FRR user and groups

sudo groupadd -g 92 frr
sudo groupadd -r -g 85 frrvty
sudo useradd -u 92 -g 92 -M -r -G frrvty -s /sbin/nologin \
  -c "FRR FRRouting suite" -d /var/run/frr frr

Compile

Clone the FRR git repo and use the included configure script to configure FRR’s build time options to your liking. The full option listing can be obtained by running ./configure -h. The options shown below are examples.

Note

If your platform uses systemd, please make sure to add --enable-systemd=yes to your configure options.

git clone https://github.com/frrouting/frr.git frr
cd frr
./bootstrap.sh
./configure \
    --prefix=/usr \
    --includedir=\${prefix}/include \
    --enable-exampledir=\${prefix}/share/doc/frr/examples \
    --bindir=\${prefix}/bin \
    --sbindir=\${prefix}/lib/frr \
    --libdir=\${prefix}/lib/frr \
    --libexecdir=\${prefix}/lib/frr \
    --localstatedir=/var/run/frr \
    --sysconfdir=/etc/frr \
    --with-moduledir=\${prefix}/lib/frr/modules \
    --with-libyang-pluginsdir=\${prefix}/lib/frr/libyang_plugins \
    --enable-configfile-mask=0640 \
    --enable-logfile-mask=0640 \
    --enable-snmp=agentx \
    --enable-multipath=64 \
    --enable-user=frr \
    --enable-group=frr \
    --enable-vty-group=frrvty \
    --with-pkg-git-version \
    --with-pkg-extra-version=-MyOwnFRRVersion
make
sudo make install

Install FRR configuration files

sudo install -m 775 -o frr -g frr -d /var/log/frr
sudo install -m 775 -o frr -g frrvty -d /etc/frr
sudo install -m 640 -o frr -g frrvty tools/etc/frr/vtysh.conf /etc/frr/vtysh.conf
sudo install -m 640 -o frr -g frr tools/etc/frr/frr.conf /etc/frr/frr.conf
sudo install -m 640 -o frr -g frr tools/etc/frr/daemons.conf /etc/frr/daemons.conf
sudo install -m 640 -o frr -g frr tools/etc/frr/daemons /etc/frr/daemons

Tweak sysctls

Some sysctls need to be changed in order to enable IPv4/IPv6 forwarding and MPLS (if supported by your platform). If your platform does not support MPLS, skip the MPLS related configuration in this section.

Create a new file /etc/sysctl.d/90-routing-sysctl.conf with the following content:

#
# Enable packet forwarding
#
net.ipv4.conf.all.forwarding=1
net.ipv6.conf.all.forwarding=1
#
# Enable MPLS Label processing on all interfaces
#
#net.mpls.conf.eth0.input=1
#net.mpls.conf.eth1.input=1
#net.mpls.conf.eth2.input=1
#net.mpls.platform_labels=100000

Note

MPLS must be invidividually enabled on each interface that requires it. See the example in the config block above.

Load the modifed sysctls on the system:

sudo sysctl -p /etc/sysctl.d/90-routing-sysctl.conf

Create a new file /etc/modules-load.d/mpls.conf with the following content:

# Load MPLS Kernel Modules
mpls-router
mpls-iptunnel

And load the kernel modules on the running system:

sudo modprobe mpls-router mpls-iptunnel

Note

Fedora ships with the firewalld service enabled. You may run into some issues with the iptables rules it installs by default. If you wish to just stop the service and clear ALL rules do these commands:

sudo systemctl disable firewalld.service
sudo systemctl stop firewalld.service
sudo iptables -F

Install service files

sudo install -p -m 644 redhat/frr.service /usr/lib/systemd/system/frr.service
sudo install -p -m 755 redhat/frr.init /usr/lib/frr/frr
sudo systemctl enable frr

Enable daemons

Open /etc/frr/daemons with your text editor of choice. Look for the section with watchfrr_enable=... and zebra=... etc. Enable the daemons as required by changing the value to yes.

Start FRR

sudo systemctl start frr