sonic-buildimage/dockers/docker-fpm-frr/frr/bgpd/bgpd.main.conf.j2

!
! template: bgpd/bgpd.main.conf.j2
!
! bgp multiple-instance
!
! BGP configuration
!
! TSA configuration
!
ip prefix-list PL_LoopbackV4 permit {{ get_ipv4_loopback_address(LOOPBACK_INTERFACE, "Loopback0") | ip }}/32
!
{% if get_ipv6_loopback_address(LOOPBACK_INTERFACE, "Loopback0") != 'None' %}
ipv6 prefix-list PL_LoopbackV6 permit {{ get_ipv6_loopback_address(LOOPBACK_INTERFACE, "Loopback0") | replace('/128', '/64') | ip_network }}/64
{% endif %}
!
!
{% if DEVICE_METADATA['localhost']['sub_role'] == 'FrontEnd' %}
route-map HIDE_INTERNAL permit 10
  set community local-AS
!
{% endif %}
!
router bgp {{ DEVICE_METADATA['localhost']['bgp_asn'] }}
!
{% block bgp_init %}
  bgp log-neighbor-changes
  no bgp default ipv4-unicast
!
{% if constants.bgp.multipath_relax.enabled is defined and constants.bgp.multipath_relax.enabled %}
  bgp bestpath as-path multipath-relax
{% endif %}
!
{% if constants.bgp.graceful_restart.enabled is defined and constants.bgp.graceful_restart.enabled %}
  bgp graceful-restart restart-time {{ constants.bgp.graceful_restart.restart_time | default(240) }}
  bgp graceful-restart
  bgp graceful-restart preserve-fw-state
{% endif %}
!
{# set router-id #}
  bgp router-id {{ get_ipv4_loopback_address(LOOPBACK_INTERFACE, "Loopback0") | ip }}
!
{# advertise loopback #}
  network {{ get_ipv4_loopback_address(LOOPBACK_INTERFACE, "Loopback0") | ip }}/32
!
{% if get_ipv6_loopback_address(LOOPBACK_INTERFACE, "Loopback0") != 'None' %}
  address-family ipv6
    network {{ get_ipv6_loopback_address(LOOPBACK_INTERFACE, "Loopback0") | ip }}/64
  exit-address-family
{% endif %}
{% endblock bgp_init %}
!
{% block vlan_advertisement %}
{% for (name, prefix) in VLAN_INTERFACE|pfx_filter %}
{% if prefix | ipv4 %}
  network {{ prefix }}
{% elif prefix | ipv6 %}
  address-family ipv6
   network {{ prefix }}
  exit-address-family
{% endif %}
{% endfor %}
{% endblock vlan_advertisement %}
!
!
{% if DEVICE_METADATA['localhost']['sub_role'] == 'BackEnd' %}
  redistribute connected route-map HIDE_INTERNAL
{% endif %}
!
{% if constants.bgp.maximum_paths.enabled is defined and constants.bgp.maximum_paths.enabled %}
{% block maximum_paths %}
  address-family ipv4
    maximum-paths {{ constants.bgp.maximum_paths.ipv4 | default(64) }}
  exit-address-family
  address-family ipv6
    maximum-paths {{ constants.bgp.maximum_paths.ipv6 | default(64) }}
  exit-address-family
{% endblock maximum_paths %}
{% endif %}
!
! end of template: bgpd/bgpd.main.conf.j2
!