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Re: Debian Server Routing OSPF on two links and one loopback address

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On Sat, Nov 30, 2024 at 6:46 PM Timothy M Butterworth <
timothy.m.butterworth@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
>




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Debian Server Routing OSPF on two links and one loopback address Timothy M Butterworth <timothy.m.butterworth@gmail.com> - 2024-12-01 00:50 +0100
  Re: Debian Server Routing OSPF on two links and one loopback address Timothy M Butterworth <timothy.m.butterworth@gmail.com> - 2024-12-01 01:00 +0100
    Re: Debian Server Routing OSPF on two links and one loopback address Andy Smith <andy@strugglers.net> - 2024-12-01 01:20 +0100
      Re: Debian Server Routing OSPF on two links and one loopback address Timothy M Butterworth <timothy.m.butterworth@gmail.com> - 2024-12-01 09:30 +0100
  Re: Debian Server Routing OSPF on two links and one loopback address Andy Smith <andy@strugglers.net> - 2024-12-01 01:10 +0100
    Re: Debian Server Routing OSPF on two links and one loopback address Timothy M Butterworth <timothy.m.butterworth@gmail.com> - 2024-12-01 09:30 +0100
  Re: Debian Server Routing OSPF on two links and one loopback address Timothy M Butterworth <timothy.m.butterworth@gmail.com> - 2024-12-01 01:40 +0100
    Re: Debian Server Routing OSPF on two links and one loopback address Timothy M Butterworth <timothy.m.butterworth@gmail.com> - 2024-12-01 02:10 +0100
      Re: Debian Server Routing OSPF on two links and one loopback address Timothy M Butterworth <timothy.m.butterworth@gmail.com> - 2024-12-01 03:10 +0100

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