OpenBSD 6

Install required packages

Configure PKG_PATH

export PKG_PATH=http://ftp5.usa.openbsd.org/pub/OpenBSD/$(uname -r)/packages/$(machine -a)/

Add packages:

pkg_add clang libcares python3
pkg_add git autoconf-2.69p2 automake-1.15.1 libtool bison
pkg_add gmake json-c py-test py-sphinx libexecinfo protobuf-c

Select Python2.7 as default (required for pytest)

ln -s /usr/local/bin/python2.7 /usr/local/bin/python

FRR depends on the libyang library to provide YANG/NETCONF support. Some distributions do not offer a libyang package or offer old versions. Therefore we provide two options below to install this library.

Note

libyang version 2.1.128 or newer is required to build FRR.

libyang version 3 is recommended, with support added in FRR 10.2.

libyang version 4 is not preferred to version 3. V4 has placed restrictions on the use of the internal binary encoding format (LYD_LYB). As a result internal FRR messages have to fall back to using either JSON or XML encoding.

libyang version 5 restores support for using the binary encoding that was removed in version 4, however, a few minor changes in FRR are required before it will again be taken advantage of.

Option 1: Binary Install

The FRR project builds some binary libyang packages.

RPM packages are available in our RPM repository.

DEB packages are available in our DEB repository.

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 libpcre2-dev or pcre2-devel.

Option 2: Source Install

Note

Ensure that the libyang build requirements are met before continuing. Usually this entails installing cmake and libpcre2-dev or pcre2-devel.

git clone https://github.com/CESNET/libyang.git
cd libyang
git checkout v3.13.6
mkdir build; cd build
cmake --install-prefix /usr \
      -D CMAKE_BUILD_TYPE:String="Release" ..
make
sudo make install

Note

The git tag used above is just a suggestion, not a requirement. Feel free to change it to newer or older version 3 release tags if you wish.

Get FRR, compile it and install it (from Git)

This assumes you want to build and install FRR from source and not using any packages

Add frr group and user

groupadd -g 525 _frr
groupadd -g 526 _frrvty
useradd -g 525 -u 525 -c "FRR suite" -G _frrvty \
    -d /nonexistent -s /sbin/nologin _frr

Download Source, configure and compile it

(You may prefer different options on configure statement. These are just an example)

Warning

In openbsd the proper links for the libyang library may not have been created.

ln -s /usr/lib/libyang.so.1.10.17 /usr/lib/libyang.so

Warning

openbsd since version 6.2 has clang as the default compiler so to build frr, clang must be used (the included gcc version is very old).

git clone https://github.com/frrouting/frr.git frr
cd frr
export AUTOCONF_VERSION="2.69"
export AUTOMAKE_VERSION="1.15"
./bootstrap.sh
export LDFLAGS="-L/usr/local/lib"
export CPPFLAGS="-I/usr/local/include"
./configure \
    --sysconfdir=/etc \
    --localstatedir=/var \
    --enable-multipath=64 \
    --enable-user=_frr \
    --enable-group=_frr \
    --enable-vty-group=_frrvty \
    --enable-configfile-mask=0640 \
    --enable-logfile-mask=0640 \
    --enable-fpm \
    --with-pkg-git-version \
    --with-pkg-extra-version=-MyOwnFRRVersion \
    CC=clang
gmake
gmake check
doas gmake install

Create empty FRR configuration files

doas mkdir /var/frr
doas chown _frr:_frr /var/frr
doas chmod 755 /var/frr
doas mkdir /etc/frr
doas touch /etc/frr/zebra.conf
doas touch /etc/frr/bgpd.conf
doas touch /etc/frr/ospfd.conf
doas touch /etc/frr/ospf6d.conf
doas touch /etc/frr/isisd.conf
doas touch /etc/frr/ripd.conf
doas touch /etc/frr/ripngd.conf
doas touch /etc/frr/pimd.conf
doas touch /etc/frr/ldpd.conf
doas touch /etc/frr/nhrpd.conf
doas chown -R _frr:_frr /etc/frr
doas touch /etc/frr/vtysh.conf
doas chown -R _frr:_frrvty /etc/frr/vtysh.conf
doas chmod 750 /etc/frr
doas chmod 640 /etc/frr/*.conf

Enable IP & IPv6 forwarding

Add the following lines to the end of /etc/rc.conf:

net.inet6.ip6.forwarding=1      # 1=Permit forwarding of IPv6 packets
net.inet6.ip6.mforwarding=1     # 1=Permit forwarding of IPv6 multicast packets
net.inet6.ip6.multipath=1       # 1=Enable IPv6 multipath routing

Reboot to apply the config to the system

Enable MPLS Forwarding

To enable MPLS forwarding on a given interface, use the following command:

doas ifconfig em0 mpls

Alternatively, to make MPLS forwarding persistent across reboots, add the “mpls” keyword in the hostname.* files of the desired interfaces. Example:

cat /etc/hostname.em0
inet 10.0.1.1 255.255.255.0 mpls

Install rc.d init files

(create them in /etc/rc.d - no example are included at this time with FRR source)

Example (for zebra - store as /etc/rc.d/frr_zebra.sh)

#!/bin/sh
#
# $OpenBSD: frr_zebra.rc,v 1.1 2013/04/18 20:29:08 sthen Exp $

daemon="/usr/local/sbin/zebra -d"

. /etc/rc.d/rc.subr

rc_cmd $1

Enable FRR processes

(Enable the required processes only)

echo "frr_zebra=YES" >> /etc/rc.conf
echo "frr_bgpd=YES" >> /etc/rc.conf
echo "frr_ospfd=YES" >> /etc/rc.conf
echo "frr_ospf6d=YES" >> /etc/rc.conf
echo "frr_isisd=YES" >> /etc/rc.conf
echo "frr_ripngd=YES" >> /etc/rc.conf
echo "frr_ripd=YES" >> /etc/rc.conf
echo "frr_pimd=YES" >> /etc/rc.conf
echo "frr_ldpd=YES" >> /etc/rc.conf