On Sat, Nov 30, 2024 at 6:46 PM Timothy M Butterworth < timothy.m.butterwo...@gmail.com> wrote:
> All, > > I have been working out how to have my server setup with OSPF routing. I > have two network interfaces each configured with a /30 and one dummy > loopback configured with a /32. The goal is to have the /32 address > advertised in DNS so traffic can use per-session load balancing across both > /30's. > > Can anyone think of anything I might have missed? > > ### Create and configure the dummy interface > > sudo touch /etc/network/interfaces.d/ospf.cfg > sudo vim /etc/network/interfaces.d/ospf.cfg > > auto ospf > iface ospf inet static > address 10.0.0.1/32 > pre-up ip link add ospf type dummy > > > ### Configure Static IP addresses > auto eth0 > iface eth0 inet static > address 10.1.1.2/30 > > auto eth1 > iface eth1 inet static > address 10.1.1.6/30 > > > ### Add Default Gateway routes > route add -net default gw 10.1.1.1 metric 1024 dev eth0 > route add -net default gw 10.1.1.5 metric 1024 dev eth1 > I changed the default gateway config to: ### Configure Static IP addresses and default gateway's. auto eth0 iface eth0 inet static address 10.1.1.2/30 up route add -net default gw 10.1.1.1 metric 1024 dev eth0 auto eth1 iface eth1 inet static address 10.1.1.6/30 up route add -net default gw 10.1.1.5 metric 1024 dev eth1 > # NOTE: I am not sure if the above commands will be persistent. > > ### Install and Configure frr Free Range Routing > sudo apt install frr > > sudo vim /etc/frr/daemons > change no to yes for OSPF > > sudo /usr/bin/vtysh > > conf t > router ospf > network 10.0.0.1/32 area 0 > network 10.1.1.0/30 area 0 > network 10.1.1.4/30 area 0 > > # NOTE: frr configuration is stored in. sudo vim /etc/frr/frr.conf > > > ### Enable IP Forwarding > sudo sysctl -w net.ipv4.ip_forward=1 > > ### sysctl.d config file > sudo touch /etc/sysctl.d/ipforward > sudo vim /etc/sysctl.d/ipforward > net.ipv4.ip_forward = 1 > > ### Firewalld Configuration - Open OSPF > sudo firewall-cmd --add-protocol=ospf --permanent --zone=internal > sudo firewall-cmd --add-protocol=89 --permanent --zone=internal > > ### DNS Configuration > ; > ; BIND data file for local loopback interface > ; > $TTL 604800 > @ IN SOA ns1.home.arpa. root.home.arpa. ( > 2 ; Serial > 604800 ; Refresh > 86400 ; Retry > 2419200 ; Expire > 604800 ) ; Negative Cache TTL > ; > @ IN NS ns1.home.arpa. > @ IN A 127.0.0.1 > @ IN AAAA ::1 > > ns1 IN A 127.0.0.1 > ns1 IN AAAA ::1 > server-1 IN A 10.0.0.1 > -- ⢀⣴⠾⠻⢶⣦⠀ ⣾⠁⢠⠒⠀⣿⡁ Debian - The universal operating system ⢿⡄⠘⠷⠚⠋⠀ https://www.debian.org/ ⠈⠳⣄⠀⠀
