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.. _basic-setup:
Basic Setup
============
After installing FRR, some basic configuration must be completed before it is
ready to use.
Daemons File
------------
After a fresh install, starting FRR will do nothing. This is because daemons
must be explicitly enabled by editing a file in your configuration directory.
This file is usually located at :file:`/etc/frr/daemons` and determines which
daemons are activated when issuing a service start / stop command via init or
systemd. The file initially looks like this:
::
zebra=no
bgpd=no
ospfd=no
ospf6d=no
ripd=no
ripngd=no
isisd=no
pimd=no
ldpd=no
nhrpd=no
eigrpd=no
babeld=no
sharpd=no
pbrd=no
To enable a particular daemon, simply change the corresponding 'no' to 'yes'.
Subsequent service restarts should start the daemon.
Daemons Configuration File
--------------------------
There is another file that controls the default options passed to daemons when
starting FRR as a service. This file is located in your configuration
directory, usually at :file:`/etc/frr/daemons.conf`.
This file has several parts. Here is an example:
::
#
# If this option is set the /etc/init.d/frr script automatically loads
# the config via "vtysh -b" when the servers are started.
# Check /etc/pam.d/frr if you intend to use "vtysh"!
#
vtysh_enable=yes
zebra_options=" -s 90000000 --daemon -A 127.0.0.1"
bgpd_options=" --daemon -A 127.0.0.1"
ospfd_options=" --daemon -A 127.0.0.1"
ospf6d_options=" --daemon -A ::1"
ripd_options=" --daemon -A 127.0.0.1"
ripngd_options=" --daemon -A ::1"
isisd_options=" --daemon -A 127.0.0.1"
pimd_options=" --daemon -A 127.0.0.1"
ldpd_options=" --daemon -A 127.0.0.1"
nhrpd_options=" --daemon -A 127.0.0.1"
eigrpd_options=" --daemon -A 127.0.0.1"
babeld_options=" --daemon -A 127.0.0.1"
sharpd_options=" --daemon -A 127.0.0.1"
pbrd_options=" --daemon -A 127.0.0.1"
# The list of daemons to watch is automatically generated by the init script.
watchfrr_enable=yes
watchfrr_options=(-d -r /usr/sbin/servicebBfrrbBrestartbB%s -s /usr/sbin/servicebBfrrbBstartbB%s -k /usr/sbin/servicebBfrrbBstopbB%s -b bB)
# If valgrind_enable is 'yes' the frr daemons will be started via valgrind.
# The use case for doing so is tracking down memory leaks, etc in frr.
valgrind_enable=no
valgrind=/usr/bin/valgrind
Breaking this file down:
::
vtysh_enable=yes
As the comment says, this causes :ref:`VTYSH <vty-shell>` to apply
configuration when starting the daemons. This is useful for a variety of
reasons touched on in the VTYSH documentation and should generally be enabled.
::
zebra_options=" -s 90000000 --daemon -A 127.0.0.1"
bgpd_options=" --daemon -A 127.0.0.1"
...
The next set of lines controls what options are passed to daemons when started
from the service script. Usually daemons will have ``--daemon`` and ``-A
<address>`` specified in order to daemonize and listen for VTY commands on a
particular address.
::
# The list of daemons to watch is automatically generated by the init script.
watchfrr_enable=yes
watchfrr_options=(-d -r /usr/sbin/servicebBfrrbBrestartbB%s -s /usr/sbin/servicebBfrrbBstartbB%s -k /usr/sbin/servicebBfrrbBstopbB%s -b bB)
Options for the ``watchfrr``, the watchdog daemon.
::
valgrind_enable=no
valgrind=/usr/bin/valgrind
Whether or not to start FRR daemons under Valgrind. This is primarily useful
for gathering information for bug reports and for developers.
``valgrind_enable`` should be ``no`` for production use.
Services
--------
FRR daemons have their own terminal interface or VTY. After installation, it's
a good idea to setup each daemon's port number to connect to them. To do this
add the following entries to :file:`/etc/services`.
::
zebrasrv 2600/tcp # zebra service
zebra 2601/tcp # zebra vty
ripd 2602/tcp # RIPd vty
ripngd 2603/tcp # RIPngd vty
ospfd 2604/tcp # OSPFd vty
bgpd 2605/tcp # BGPd vty
ospf6d 2606/tcp # OSPF6d vty
ospfapi 2607/tcp # ospfapi
isisd 2608/tcp # ISISd vty
babeld 2609/tcp # BABELd vty
nhrpd 2610/tcp # nhrpd vty
pimd 2611/tcp # PIMd vty
ldpd 2612/tcp # LDPd vty
eigprd 2613/tcp # EIGRPd vty
If you use a FreeBSD newer than 2.2.8, the above entries are already added to
:file:`/etc/services` so there is no need to add it. If you specify a port
number when starting the daemon, these entries may not be needed.
You may need to make changes to the config files in |INSTALL_PREFIX_ETC|.
systemd
-------
Although not installed when installing from source, FRR provides a service file
for use with ``systemd``. It is located in :file:`tools/frr.service` in the Git
repository. If ``systemctl status frr.service`` indicates that the FRR service
is not found, copy the service file from the Git repository into your preferred
location. A good place is usually ``/etc/systemd/system/``.
After issuing a ``systemctl daemon-reload``, you should be able to start the
FRR service via ``systemctl start frr``. If this fails, or no daemons are
started. check the ``journalctl`` logs for an indication of what went wrong.
|
