sonic-buildimage/dockers/docker-fpm-quagga/bgpd.conf.j2

!
{% block banner %}
! =========== Managed by sonic-cfggen DO NOT edit manually! ====================
! generated by templates/quagga/bgpd.conf.j2 using minigraph_facts.py
! file: bgpd.conf
!
{% endblock banner %}
!
{% block system_init %}
hostname {{ inventory_hostname }}
password zebra
log syslog informational
log facility local4
! enable password {# {{ en_passwd }} TODO: param needed #}
{% endblock system_init %}
!
{% if minigraph_bgp_asn is not none %}
{% block bgp_init %}
!
! bgp multiple-instance
!
route-map FROM_BGP_SPEAKER_V4 permit 10
!
route-map TO_BGP_SPEAKER_V4 deny 10
!
router bgp {{ minigraph_bgp_asn }}
  bgp log-neighbor-changes
  bgp bestpath as-path multipath-relax
{# Advertise graceful restart capability for ToR #}
{% if minigraph_devices[inventory_hostname]['type'] == 'ToRRouter' %}
  bgp graceful-restart
{% endif %}
{# TODO: use lo[0] for backward compatibility, will revisit the case with multiple lo interfaces #}
  bgp router-id {{ minigraph_lo_interfaces[0]['addr'] }}
{# advertise loopback #}
{% for lo in minigraph_lo_interfaces %}
{% if lo['addr'] | ipv4 %}
  network {{ lo['addr'] }}/32
{% elif lo['addr'] | ipv6 %}
  address-family ipv6
    network {{ lo['addr'] }}/128
  exit-address-family
{% endif %}
{% endfor %}
{% endblock bgp_init %}
{% endif %}
{% block vlan_advertisement %}
{% for vlan_interface in minigraph_vlan_interfaces %}
  network {{ vlan_interface['subnet'] }}
{% endfor %}
{% endblock vlan_advertisement %}
{% block bgp_sessions %}
{% for bgp_session in minigraph_bgp %}
{% if bgp_session['asn'] != 0 %}
  neighbor {{ bgp_session['addr'] }} remote-as {{ bgp_session['asn'] }}
  neighbor {{ bgp_session['addr'] }} description {{ bgp_session['name'] }}
{% if bgp_admin_state and bgp_admin_state.has_key(bgp_session['addr']) and bgp_admin_state[bgp_session['addr']]==False or bgp_admin_state and not bgp_admin_state.has_key(bgp_session['addr']) and bgp_admin_state.has_key('all') and bgp_admin_state['all']==False %}
  neighbor {{ bgp_session['addr'] }} shutdown
{% endif %}
{% if bgp_session['addr'] | ipv4 %}
{% if minigraph_devices[inventory_hostname]['type'] == 'ToRRouter' %}
  neighbor {{ bgp_session['addr'] }} allowas-in 1
{% endif %}
{% endif %}
{% if bgp_session['addr'] | ipv6 %}
  address-family ipv6
{% if minigraph_devices[inventory_hostname]['type'] == 'ToRRouter' %}
    neighbor {{ bgp_session['addr'] }} allowas-in 1
{% endif %}
    neighbor {{ bgp_session['addr'] }} activate
    maximum-paths 64
  exit-address-family
{% endif %}
{% endif %}
{% endfor %}
{% endblock bgp_sessions %}
{% block bgp_peers_with_range %}
{% for bgp_peer in minigraph_bgp_peers_with_range %}
  neighbor {{ bgp_peer['name'] }} peer-group
  neighbor {{ bgp_peer['name'] }} passive
  neighbor {{ bgp_peer['name'] }} remote-as {{deployment_id_asn_map[deployment_id] }}
  neighbor {{ bgp_peer['name'] }} ebgp-multihop 255
  neighbor {{ bgp_peer['name'] }} soft-reconfiguration inbound
  neighbor {{ bgp_peer['name'] }} update-source Loopback0
  neighbor {{ bgp_peer['name'] }} route-map FROM_BGP_SPEAKER_V4 in
  neighbor {{ bgp_peer['name'] }} route-map TO_BGP_SPEAKER_V4 out
  bgp listen range {{ bgp_peer['ip_range'] }} peer-group {{ bgp_peer['name'] }}
{% endfor %}
{% endblock bgp_peers_with_range %}
!
{% if minigraph_bgp_asn is not none %}
maximum-paths 64
!
route-map ISOLATE permit 10
set as-path prepend {{ minigraph_bgp_asn }}
{% endif %}
!