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Building FRR on Ubuntu 16.04LTS from Git Source
===============================================
- MPLS is not supported on `Ubuntu 16.04` with default kernel. MPLS requires
Linux Kernel 4.5 or higher (LDP can be built, but may have limited use
without MPLS)
For an updated Ubuntu Kernel, see
http://kernel.ubuntu.com/~kernel-ppa/mainline/
Install required packages
-------------------------
Add packages:
apt-get install git autoconf automake libtool make gawk libreadline-dev \
texinfo dejagnu pkg-config libpam0g-dev libjson-c-dev bison flex \
python-pytest libc-ares-dev python3-dev
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 groups and user
sudo groupadd -g 92 frr
sudo groupadd -r -g 85 frrvty
sudo adduser --system --ingroup frr --groups frrvty --home /var/run/frr/ \
--gecos "FRR suite" --shell /sbin/nologin frr
### Download Source, configure and compile it
(You may prefer different options on configure statement. These are just
an example.)
git clone https://github.com/frrouting/frr.git frr
cd frr
./bootstrap.sh
./configure \
--enable-exampledir=/usr/share/doc/frr/examples/ \
--localstatedir=/var/run/frr \
--sbindir=/usr/lib/frr \
--sysconfdir=/etc/frr \
--enable-pimd \
--enable-watchfrr \
--enable-ospfclient=yes \
--enable-ospfapi=yes \
--enable-multipath=64 \
--enable-user=frr \
--enable-group=frr \
--enable-vty-group=frrvty \
--enable-configfile-mask=0640 \
--enable-logfile-mask=0640 \
--enable-rtadv \
--enable-tcp-zebra \
--enable-fpm \
--with-pkg-git-version \
--with-pkg-extra-version=-MyOwnFRRVersion
make
make check
sudo make install
### Create empty FRR configuration files
sudo mkdir /var/log/frr
sudo chown frr:fee /var/log/frr
sudo mkdir /etc/frr
sudo touch /etc/frr/etc/zebra.conf
sudo touch /etc/frr/etc/bgpd.conf
sudo touch /etc/frr/etc/ospfd.conf
sudo touch /etc/frr/etc/ospf6d.conf
sudo touch /etc/frr/etc/isisd.conf
sudo touch /etc/frr/etc/ripd.conf
sudo touch /etc/frr/etc/ripngd.conf
sudo touch /etc/frr/etc/pimd.conf
sudo touch /etc/frr/etc/ldpd.conf
sudo chown frr:frr /etc/frr/
sudo touch /etc/frr/etc/vtysh.conf
sudo chown frr:frrvty /etc/frr/etc/vtysh.conf
sudo chmod 640 /etc/frr/*.conf
### Enable IP & IPv6 forwarding
Edit `/etc/sysctl.conf` and uncomment the following values (ignore the
other settings)
# Uncomment the next line to enable packet forwarding for IPv4
net.ipv4.ip_forward=1
# Uncomment the next line to enable packet forwarding for IPv6
# Enabling this option disables Stateless Address Autoconfiguration
# based on Router Advertisements for this host
net.ipv6.conf.all.forwarding=1
### Enable MPLS Forwarding (with Linux Kernel >= 4.5)
Edit `/etc/sysctl.conf` and the following lines. Make sure to add a line
equal to `net.mpls.conf.eth0.input` or each interface used with MPLS
# 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
### Add MPLS kernel modules
Add the following lines to `/etc/modules-load.d/modules.conf`:
# Load MPLS Kernel Modules
mpls-router
mpls-iptunnel
**Reboot** or use `sysctl` to apply the same config to the running system
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