Dynamic Routing with Quagga

1. Install ‘net/quagga’ from ports:

   # cd /usr/ports/net/quagga
   # make
   # make install
   

2. Copy the sample configuration files into place

   # cd /usr/local/etc/quagga
   # cp /usr/local/share/examples/quagga/zebra.conf.sample zebra.conf
   # cp /usr/local/share/examples/quagga/ospfd.conf.sample ospfd.conf
   

3. Have a look at these files; they are very simple. “zebra” is the overall manager of the IP forwarding table; “ospfd” is the daemon which speaks the OSPF protocol.
4. On the router machine, edit /usr/local/etc/quagga/ospfd.conf and add an OSPF section listing the network(s) on which you wish to exchange OSPF information

   router ospf
     redistribute connected
     network 202.144.139.192/26 area 0
   

5. Configure your interfaces as normal

   # ifconfig eth0 x.x.x.x netmask y.y.y.y
   # ifconfig eth1 x.x.x.x netmask y.y.y.y
   

6. Edit /etc/rc.conf to enable the daemons we want:

   quagga_enable="YES"
   quagga_daemons="zebra ospfd"
   

7. Start the selected daemons:

   # /etc/rc.d/quagga start
   

8. Check your forwarding table (netstat -rn)
9. You can manage the router using telnet: the interface is just like a Cisco router! This lets you make configuration changes in real time.

   # telnet 127.0.0.1 2601     -- to manage zebra (password "zebra")
   Try: show interface
        enable                 -- to get superuser mode (password "zebra")
        show run
        show ip route
        exit
   
   # telnet 127.0.0.1 2604     -- to manage ospfd
   Try: show ip ospf neighbours
        show ip ospf route
        exit
   
   Hint: use [TAB] for command completion, and '?' to get a list of options
   

10. On the client machine, you can just point default route at the router. Or if you wish to play with zebra, then install it as above. You will need a ‘network’ statement on both machines to exchange information.

If you were running this in production, remember to change the default passwords!

from http://www.nsrc.org

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Filed under: FreeBSD, Router