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 with config DB data
! file: bgpd.conf
!
{% endblock banner %}
!
{% block system_init %}
hostname {{ DEVICE_METADATA['localhost']['hostname'] }}
password zebra
log syslog informational
log facility local4
! enable password {# {{ en_passwd }} TODO: param needed #}
{% endblock system_init %}
!
{% if DEVICE_METADATA['localhost'].has_key('bgp_asn') %}
{% block bgp_init %}
!
! bgp multiple-instance
!
route-map FROM_BGP_SPEAKER_V4 permit 10
!
route-map TO_BGP_SPEAKER_V4 deny 10
!
router bgp {{ DEVICE_METADATA['localhost']['bgp_asn'] }}
  bgp log-neighbor-changes
  bgp bestpath as-path multipath-relax
  no bgp default ipv4-unicast
{# Advertise graceful restart capability for ToR #}
{% if DEVICE_METADATA['localhost']['type'] == 'ToRRouter' %}
  bgp graceful-restart
{% endif %}
{% for (name, prefix) in LOOPBACK_INTERFACE %}
{# TODO: use v4 lo for backward compatibility, will revisit the case with multiple lo interfaces #}
{% if prefix | ipv4 %}
  bgp router-id {{ prefix | ip }}
{% endif %}
{% endfor %}
{# advertise loopback #}
{% for (name, prefix) in LOOPBACK_INTERFACE %}
{% if prefix | ipv4 %}
  network {{ prefix | ip }}/32
{% elif prefix | ipv6 %}
  address-family ipv6
    network {{ prefix | ip }}/128
  exit-address-family
{% endif %}
{% endfor %}
{% endblock bgp_init %}
{% endif %}
{% block vlan_advertisement %}
{% for (name, prefix) in VLAN_INTERFACE %}
{% if prefix | ipv4 %}
  network {{ prefix }}
{% elif prefix | ipv6 %}
  address-family ipv6
   network {{ prefix }}
  exit-address-family
{% endif %}
{% endfor %}
{% endblock vlan_advertisement %}
{% block bgp_sessions %}
{% for neighbor_addr, bgp_session in BGP_NEIGHBOR.iteritems() %}
{% if bgp_session['asn'] | int != 0 %}
  neighbor {{ neighbor_addr }} remote-as {{ bgp_session['asn'] }}
  neighbor {{ neighbor_addr }} description {{ bgp_session['name'] }}
{% 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
{% if DEVICE_METADATA['localhost']['type'] == 'ToRRouter' %}
    neighbor {{ neighbor_addr }} allowas-in 1
{% endif %}
    neighbor {{ neighbor_addr }} activate
    maximum-paths 64
  exit-address-family
{% endif %}
{% if neighbor_addr | ipv6 %}
  address-family ipv6
{% if DEVICE_METADATA['localhost']['type'] == 'ToRRouter' %}
    neighbor {{ neighbor_addr }} allowas-in 1
{% endif %}
    neighbor {{ neighbor_addr }} activate
    maximum-paths 64
  exit-address-family
{% endif %}
{% endif %}
{% endfor %}
{% endblock bgp_sessions %}
{% block bgp_peers_with_range %}
{% if BGP_PEER_RANGE %}
{% for bgp_peer in BGP_PEER_RANGE.values() %}
  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
{% for ip_range in bgp_peer['ip_range'] %}
  bgp listen range {{ip_range}} peer-group {{ bgp_peer['name'] }}
{% endfor %}
  address-family ipv4
    neighbor {{ bgp_peer['name'] }} activate
    maximum-paths 64
  exit-address-family
  address-family ipv6
    neighbor {{ bgp_peer['name'] }} activate
    maximum-paths 64
  exit-address-family
{% endfor %}
{% endif %}
{% endblock bgp_peers_with_range %}
!
{% if DEVICE_METADATA['localhost'].has_key('bgp_asn') %}
maximum-paths 64
!
route-map ISOLATE permit 10
set as-path prepend {{ DEVICE_METADATA['localhost']['bgp_asn'] }}
{% endif %}
!