.. _BGP Settings: BGP ################## .. image:: img/Routing-BGP.png :width: 100% :align: center :alt: Routing BGP .. image:: img/Routing-BGP1.png :width: 100% :align: center :alt: Routing BGP BGP stands for a Border Gateway Protocol. The lastest BGP version is 4. It is referred as BGP-4. BGP-4 is one of the Exterior Gateway Protocols and de-fact standard of Inter Domain routing protocol. BGP-4 is described in RFC 1771. You can find the BGP Settings at **Routing → BGP**. You can set a **Router ID** that is advertised or let the system configure one automaticlly. **AS Number** is an identification of autonomous system and must be unique within your AS. **Redistribute Kernel Routes** lets BGP automatically distribute Kernel Routes. **Redistribute Static Routes** lets BGP automatically distribute Static Routes. **Redistribute Connected Routes** lets BGP automatically distribute Connected Routes. **Custom Options** can be used for custom configuration parameters for the config. Please be aware that VT AIR static routes are classified as kernel routes. **Networks** let you advertise additional networks. You can advertise as many extra networks as you like. BGP Neighbor ************** .. image:: img/Routing-BGP2.png :width: 100% :align: center :alt: Routing BGP .. image:: img/Routing-BGP3.png :width: 100% :align: center :alt: Routing BGP Each BGP Instance that you want to communicate with needs to be created as a Neighbor under **Routing → BGP → BGP Neighbor**. **Neighbor** is the IP Address of the neighbor. **AS Number** is the AS number of the neighbor. **IP Type** the neighbor should should advertise with us. It is either IPv4, IPv6 or both. **Advanced Settings** have a lot of options to customize the neighbor relationship. Please refer to the FRR manual for a detailed explanation `FRR BGP `_. **Input Filter** allows you to set an :ref:`Access List`, :ref:`Prefix List` or :ref:`Route Map` as a filter for incoming advertised routes from this neighbor. **Output Filter** allows you to set an :ref:`Access List`, :ref:`Prefix List` or :ref:`Route Map` as a filter for outgoing advertised routes. **Custom Options** can be used for custom configuration parameters for the config.