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

{% block bgp_peer %}
  neighbor {{ neighbor_addr }} remote-as {{ bgp_session['asn'] }}
  neighbor {{ neighbor_addr }} description {{ bgp_session['name'] }}
{# set the bgp neighbor timers if they have not default values #}
{% if     (bgp_session['keepalive'] is defined and bgp_session['keepalive'] | int != 60)
      or  (bgp_session['holdtime'] is defined  and bgp_session['holdtime']  | int != 180) %}
  neighbor {{ neighbor_addr }} timers {{ bgp_session['keepalive'] }} {{ bgp_session['holdtime'] }}
{% endif %}
{% if bgp_session.has_key('admin_status') and bgp_session['admin_status'] == 'down' or not bgp_session.has_key('admin_status') and DEVICE_METADATA['localhost'].has_key('default_bgp_status') and DEVICE_METADATA['localhost']['default_bgp_status'] == 'down' %}
  neighbor {{ neighbor_addr }} shutdown
{% endif %}
{% if neighbor_addr | ipv4 %}
  address-family ipv4
    neighbor {{ neighbor_addr }} peer-group PEER_V4
{% elif neighbor_addr | ipv6 %}
  address-family ipv6
{% if bgp_session['asn'] != DEVICE_METADATA['localhost']['bgp_asn'] %}
    neighbor {{ neighbor_addr }} route-map set-next-hop-global-v6 in
{% endif %}
    neighbor {{ neighbor_addr }} peer-group PEER_V6
{% endif %}
{% if bgp_session['rrclient'] | int != 0 %}
    neighbor {{ neighbor_addr }} route-reflector-client
{% endif %}
{% if bgp_session['nhopself'] | int != 0 %}
    neighbor {{ neighbor_addr }} next-hop-self
{% endif %}
{% if  bgp_session["asn"] == DEVICE_METADATA['localhost']['bgp_asn']
   and DEVICE_METADATA['localhost']['type'] == "SpineChassisFrontendRouter"
   and (not bgp_session.has_key("local_addr") or bgp_session["local_addr"] not in interfaces_in_vnets) %}
  address-family l2vpn evpn
    neighbor {{ neighbor_addr }} activate
    advertise-all-vni
  exit-address-family
{% endif %}
    neighbor {{ neighbor_addr }} activate
  exit-address-family
{% endblock bgp_peer %}