ff-policy.conf 4.3 KB

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  1. #
  2. # FFHO Routing Policy
  3. #
  4. {%- set node_roles = salt['pillar.get']('nodes:' ~ grains['id'] ~ ':roles', []) %}
  5. {%- set node_sites = salt['pillar.get']('nodes:' ~ grains['id'] ~ ':sites', []) %}
  6. {%- set sites = salt['pillar.get']('sites', {}) %}
  7. {%- set te = salt['pillar.get']('te', {}) %}
  8. ################################################################################
  9. # Static Filters #
  10. ################################################################################
  11. filter external_IPs_to_learn {
  12. if net ~ [
  13. {%- if proto == 'v4' %}
  14. 80.70.181.59/32, # mail.ffho.net
  15. 80.70.181.61/32 # fe01.ffho.net
  16. {%- else %}
  17. 2a02:450:1:0::/64 # Vega VM Subnet
  18. {%- endif %}
  19. ] then accept;
  20. reject;
  21. };
  22. filter own_prefixes {
  23. if net ~ [
  24. {%- if proto == 'v4' %}
  25. 10.132.0.0/16,
  26. 172.30.0.0/16{24,24}
  27. {%- else %}
  28. fdca:ffee:ff12::/48,
  29. 2a03:2260:2342::/48
  30. {%- endif %}
  31. ] then accept;
  32. reject;
  33. };
  34. ################################################################################
  35. # iBGP routing policy (Communities + Filter) + TE #
  36. ################################################################################
  37. {%- for site in node_sites %}
  38. {%- set site_config = sites.get (site) %}
  39. {%- set community = 'SITE_' ~ site|upper|replace('-', '') ~ '_ROUTE' %}
  40. {%- set community_id = site_config.get ('site_no')|int + 100 %}
  41. define {{ community }} = (65132,{{ community_id }});
  42. {%- endfor %}
  43. # Prefixes longer that site prefix leaving a gateway as TE prefixes.
  44. # They are for TE core -> gateway only and must not be imported on other gateways.
  45. define GATEWAY_TE_ROUTE = (65132,300);
  46. # All our prefixes learned in the external VRF and redistributed into the
  47. # internal network
  48. define EXTERNAL_ROUTE = (65132,1023);
  49. # TE routes only to be exported by specific border routers
  50. define EXPORT_RESTRICT = (65132, 100);
  51. define EXPORT_ONLY_AT_CR01 = (65132, 101);
  52. define EXPORT_ONLY_AT_CR02 = (65132, 102);
  53. define EXPORT_ONLY_AT_CR03 = (65132, 103);
  54. define EXPORT_ONLY_AT_CR04 = (65132, 104);
  55. define EXPORT_ONLY_AT_BBR_KT = (65132, 197);
  56. # Anycasted prefix
  57. define ANYCAST_PREFIX = (65132,999);
  58. # To be placed in /etc/bird/ff_killswitch.conf
  59. define SITE_LEGACY_ONLINE = 1;
  60. define SITE_PADCTY_ONLINE = 1;
  61. define SITE_PADUML_ONLINE = 1;
  62. define DRAINED = 0;
  63. {%- if 'batman_gw' in node_roles %}
  64. function tag_site_routes ()
  65. {
  66. {%- for site in node_sites %}
  67. {%- set site_config = sites.get (site) %}
  68. {%- set prefix = site_config.get ('prefix_' ~ proto) %}
  69. {%- set prefix_mask_te = prefix.split ('/')[1]|int + 1 %}
  70. {%- set community = 'SITE_' ~ site|upper|replace('-', '') ~ '_ROUTE' %}
  71. # {{ site_config.get ('name', site) }}
  72. if net ~ [ {{ prefix }}+ ] then {
  73. bgp_community.add ({{ community }});
  74. }
  75. {#-
  76. # Tag all routes for prefixes longer than site prefix leaving a gateway
  77. # as TE prefixes. They are for TE core -> gateway only and must not be
  78. # imported on other gateways.
  79. #}
  80. {%- if proto == 'v4' %}
  81. if net ~ [ {{ prefix ~ '{' ~ prefix_mask_te ~ ',32}' }} ] then {
  82. bgp_community.add (GATEWAY_TE_ROUTE);
  83. }
  84. {%- endif %}
  85. {% endfor %}
  86. }
  87. {%- endif %}
  88. filter ibgp_in {
  89. {#- Don't import other gateways TE prefixes here #}
  90. {%- if 'batman_gw' in node_roles %}
  91. if (GATEWAY_TE_ROUTE ~ bgp_community) then {
  92. reject;
  93. }
  94. {%- endif %}
  95. accept;
  96. }
  97. filter ibgp_out {
  98. # Don't redistribute OSPF into iBGP
  99. if "IGP" = proto then
  100. reject;
  101. # Don't redistribute v6 LO IP
  102. if "lo_v6" = proto then
  103. reject;
  104. # Don't redistribute null routes for bogon prefixes
  105. if "bogon_unreach" = proto then
  106. reject;
  107. # Don't redistribute TE prefixes for FFRL
  108. if "ffrl_te" = proto then
  109. reject;
  110. # Don't redistribute anything IF we are drained
  111. if 1 = DRAINED then
  112. reject;
  113. {%- if 'batman_gw' in node_roles %}
  114. tag_site_routes ();
  115. {%- endif %}
  116. bgp_next_hop = LO_IP;
  117. accept;
  118. }
  119. # Traffic engineering routes
  120. protocol static ffho_te {
  121. preference 23;
  122. {% set prefixes = salt['ffho_net.get_te_prefixes'](te, grains['id'], proto) %}
  123. {% for prefix in prefixes|sort %}
  124. {%- set config = prefixes.get (prefix) %}
  125. {%- if 'desc' in config %}
  126. # {{ config.get ('desc') }}
  127. {%- endif %}
  128. route {{ prefix }} unreachable {
  129. {%- for community in config.get ('communities', []) %}
  130. bgp_community.add ({{ community }});
  131. {%- endfor %}
  132. };
  133. {%- endfor %}
  134. }