Setting Up a Route Reflector

In addition to the access points, we use a route reflector to build our control plane. A route reflector can be any kind of machine where FRR can be installed. It just needs a L3 connection to the access points and the gateway. We again use an Ubuntu server host for this tutorial.

Setting Up FRR

Warning

This part of the guide is very similar to the one for the gateway. However, the configuration files for FRR are different in this case.

Install frr on the gateway.
```
sudo apt install frr
```

Create the file sample-configs/gateway/frr.conf with the following content. Remember to insert the IP of the route reflector.

/etc/frr/daemons

log syslog informational
ip nht resolve-via-default
ip6 nht resolve-via-default
router bgp 65000
  bgp router-id <OWN-IP-ADDRESS>
  bgp cluster-id <OWN-IP-ADDRESS>
  bgp log-neighbor-changes
  no bgp default ipv4-unicast
  neighbor fabric peer-group
  neighbor fabric remote-as 65000
  neighbor fabric capability extended-nexthop
  neighbor fabric ebgp-multihop 5
  neighbor fabric update-source <OWN-IP-ADDRESS>
  bgp listen range <ALL-AP-SUBNETS-CIDR-NOTATION> peer-group fabric
  !
  address-family l2vpn evpn
  neighbor fabric activate
  neighbor fabric route-reflector-client
  exit-address-family
  !
!

Create the file /etc/frr/daemons with the following content

/etc/frr/daemons

bgpd=yes
ospfd=no
ospf6d=no
ripd=no
ripngd=no
isisd=no
pimd=no
ldpd=no
nhrpd=no
eigrpd=no
babeld=no
sharpd=no
pathd=no
pbrd=no
bfdd=no
fabricd=no
vrrpd=no


vtysh_enable=yes
zebra_options="  -A 127.0.0.1 -s 90000000"
bgpd_options="   -A 127.0.0.1"
ospfd_options="  -A 127.0.0.1"
ospf6d_options=" -A ::1"
ripd_options="   -A 127.0.0.1"
ripngd_options=" -A ::1"
isisd_options="  -A 127.0.0.1"
pimd_options="   -A 127.0.0.1"
ldpd_options="   -A 127.0.0.1"
nhrpd_options="  -A 127.0.0.1"
eigrpd_options=" -A 127.0.0.1"
babeld_options=" -A 127.0.0.1"
sharpd_options=" -A 127.0.0.1"
pbrd_options="   -A 127.0.0.1"
staticd_options="-A 127.0.0.1"
bfdd_options="   -A 127.0.0.1"
fabricd_options="-A 127.0.0.1"
vrrpd_options="  -A 127.0.0.1"

Ensure these configuration files are owned by the frr user and group by running
```
sudo chown -R frr:frr /etc/frr/
```
Ensure that only the frr user has read and write permissions to the file and the frr group can read the file. All other users should not have any access. To achieve this, run
```
sudo chmod 640 /etc/frr/*
```
Restart frr by executing
```
sudo systemctl restart frr
```

Verifying the Setup

If you already configured an access point, you can verify the peering by running:

$ sudo vtysh
rr# show bgp neighbor

It should say that the connection to the access point has been established.