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	=== Starting the OSPF Daemon ===		=== Starting the OSPF Daemon ===

Admin: Created page with "Category:Wiki === Starting the OSPF Daemon === The OSPF daemon (ospfd) is used to configure Open Shortest Path First (OSPF) routing. sudo systemctl start ospfd === Starting the BGP Daemon === The BGP daemon (bgpd) configures Border Gateway Protocol (BGP) routing. sudo systemctl start bgpd == Configuring OSPF == To configure OSPF, the `ospfd.conf` file needs to be modified. This file is usually located in `/etc/quagga/ospfd.c..."

2025-12-16T17:09:32Z

Created page with "Category:Wiki === Starting the OSPF Daemon === The OSPF daemon (ospfd) is used to configure Open Shortest Path First (OSPF) routing. <nowiki> sudo systemctl start ospfd</nowiki> === Starting the BGP Daemon === The BGP daemon (bgpd) configures Border Gateway Protocol (BGP) routing. <nowiki> sudo systemctl start bgpd</nowiki> == Configuring OSPF == To configure OSPF, the `ospfd.conf` file needs to be modified. This file is usually located in `/etc/quagga/ospfd.c..."

New page

[[Category:Wiki]]

=== Starting the OSPF Daemon ===
The OSPF daemon (ospfd) is used to configure Open Shortest Path First (OSPF) routing.

<nowiki>
sudo systemctl start ospfd</nowiki>

=== Starting the BGP Daemon ===
The BGP daemon (bgpd) configures Border Gateway Protocol (BGP) routing.

<nowiki>
sudo systemctl start bgpd</nowiki>

== Configuring OSPF ==
To configure OSPF, the `ospfd.conf` file needs to be modified. This file is usually located in `/etc/quagga/ospfd.conf`.

=== Basic OSPF Configuration ===
A simple OSPF configuration might look like the following:

<nowiki>
router ospf
network 192.168.1.0/24 area 0.0.0.0
network 10.0.0.0/24 area 0.0.0.0</nowiki>

This configures OSPF to advertise the `192.168.1.0/24` and `10.0.0.0/24` networks in OSPF area 0.

=== Adding a Router ID ===
The router ID is a unique identifier for OSPF. It can be specified like this:

<nowiki>
router ospf
router-id 1.1.1.1</nowiki>

=== Configuring OSPF Passive Interfaces ===
To prevent OSPF from sending hello packets on certain interfaces, use the `passive-interface` command:

<nowiki>
router ospf
passive-interface eth0</nowiki>

=== Configuring OSPF Authentication ===
To configure authentication for OSPF, the following can be added:

<nowiki>
router ospf
area 0.0.0.0 authentication message-digest
area 0.0.0.0 authentication-key mysecretkey</nowiki>

== Configuring BGP ==
To configure BGP, the `bgpd.conf` file needs to be edited, usually located in `/etc/quagga/bgpd.conf`.

=== Basic BGP Configuration ===
A basic BGP configuration for peering with a neighbor looks like:

<nowiki>
router bgp 65001
neighbor 192.168.1.2 remote-as 65002
network 192.168.1.0 mask 255.255.255.0</nowiki>

This example sets up a BGP session with a neighbor `192.168.1.2` in AS 65002 and advertises the `192.168.1.0/24` network.

=== Configuring BGP Route Reflectors ===
To set up a BGP route reflector, the following configuration can be used:

<nowiki>
router bgp 65001
neighbor 192.168.2.2 route-reflector-client</nowiki>

This will configure the neighbor `192.168.2.2` as a route reflector client.

=== Configuring BGP Aggregation ===
To aggregate BGP prefixes into a summary network, the following configuration can be used:

<nowiki>
router bgp 65001
aggregate-address 192.168.0.0 255.255.0.0 summary-only</nowiki>

This aggregates the `192.168.0.0/16` network and only advertises the summary.

== Verifying Configuration ==
Once the configuration is in place, it's important to verify that the protocols are running as expected.

=== Verifying OSPF Status ===
Use the following command to verify OSPF neighbors:

<nowiki>
vtysh -c "show ip ospf neighbor"</nowiki>

=== Verifying BGP Status ===
To check BGP status and routes, use the following:

<nowiki>
vtysh -c "show ip bgp summary"</nowiki>

=== Verifying Routes ===
To verify the routing table:

<nowiki>
vtysh -c "show ip route"</nowiki>

== Useful Links ==
* [https://www.quagga.net/ Official Quagga website]
* [https://wiki.quagga.net/wiki/Quagga How to configure Quagga]
* [https://linux.die.net/man/8/vtysh vtysh man page]
* [https://www.networksorcery.com/enp/rfc/rfc4271.txt BGP RFC]
* [https://www.ietf.org/rfc/rfc2328.txt OSPF RFC]

QUAGGA - Documentation - Revision history

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