Examples

Every network is unique, so check out the configuration docs to write your Pathvector config to suit your needs. Here's an example of using BGP communities to control routing policy:

Communities

Standard Community	Large Community	Meaning
65510,12	65510:0:12	Learned from upstream
65510,13	65510:0:13	Learned from route server
65510,14	65510:0:14	Learned from peer
65510,15	65510:0:15	Learned from downstream

Config File

/etc/pathvector.yml

asn: 65510
router-id: 192.0.2.1
source4: 192.0.2.1
source6: 2001:db8::1
prefixes:
  - 192.0.2.0/24
  - 2001:db8::/48

templates:
  upstream:
    allow-local-as: true
    announce: [ "65510,15", "65510:0:15" ]
    remove-all-communities: 65510
    local-pref: 80
    add-on-import: [ "65510,12", "65510:0:12" ]

  routeserver:
    filter-transit-asns: true
    auto-import-limits: true
    enforce-peer-nexthop: false
    enforce-first-as: false
    announce: [ "65510,15", "65510:0:15" ]
    remove-all-communities: 65510
    local-pref: 90
    add-on-import: [ "65510,13", "65510:0:13" ]

  peer:
    filter-irr: true
    filter-transit-asns: true
    auto-import-limits: true
    auto-as-set: true
    announce: [ "65510,15", "65510:0:15" ]
    remove-all-communities: 65510
    local-pref: 100
    add-on-import: [ "65510,14", "65510:0:14" ]

  downstream:
    filter-irr: true
    allow-blackhole-community: true
    filter-transit-asns: true
    auto-import-limits: true
    auto-as-set: true
    announce: [ "65510,15", "65510:0:15" ]
    announce-default: true
    remove-all-communities: 65510
    local-pref: 200
    add-on-import: [ "65510,15", "65510:0:15" ]

peers:
  Hurricane Electric:
    asn: 6939
    template: upstream
    neighbors:
      - 203.0.113.66
      - 2001:db8:55::66
      - 203.0.113.67
      - 2001:db8:55::67

  ARIX Route Servers:
    asn: 47192
    template: routeserver
    password: VoP5ViKtjvw4CMG
    neighbors:
      - 203.0.113.251
      - 2001:db8:55::251
      - 203.0.113.252
      - 2001:db8:55::252

  Cloudflare:
    asn: 13335
    template: peer
    neighbors:
      - 203.0.113.95
      - 2001:db8:55::95

  AS112:
    asn: 112
    template: downstream
    neighbors:
      - 192.0.2.20
      - 2001:db8::20