BGP Large Communities Support

Author: barryo

app/Bird/Parser/Routes.php

@@ -13,7 +13,6 @@ public function __contrust( $data ) {
     }
 
     public function parse() {
-
         $routes  = [];
         $r       = [];
         $matches = [];
@@ -104,6 +103,16 @@ public function parse() {
                     }
                 }
             }
+            else if( preg_match( "/^\s+BGP.large_community:\s+(.+)\s*$/", $line, $matches ) ) {
+                // BGP.large_community: (999, 1, 111)
+                // BGP.large_community: (999, 1, 111) (999, 156, 111) (999, 157, 111)
+                $m = substr( trim( $matches[1] ), 1, -1 );
+                foreach( explode( ') (', $m ) as $community ) {
+                    if( preg_match( "/^(\d+),\s*(\d+),\s*(\d+)/", trim( $community ), $matches ) ) {
+                        $r['bgp']['large_communities'][] = [ intval( $matches[1] ), intval( $matches[2] ), intval( $matches[3] )  ];
+                    }
+                }
+            }
         }
 
         // catche the last one:

data/bird-lab/ipv4/rs.conf

@@ -31,6 +31,20 @@ protocol bgp R111x1 from PEERS {
   source address 192.0.2.100;
   neighbor 192.0.2.111 as 111;
   table t_R111x1;
+
+  import filter {
+      if ! ( net ~ 172.19.1.0/24 ) then {
+        bgp_community.add((999,111));
+        bgp_large_community.add((999,1,111));
+      }
+
+      if ( net ~ 172.17.1.0/24 ) then {
+          bgp_large_community.add((999,156,111));
+          bgp_large_community.add((999,157,111));
+      }
+
+      accept;
+  };
 }
 
 ### AS222 - Member1

resources/views/lg/route.blade.php

@@ -98,7 +98,17 @@
                     <td><strong>BGP :: Communities</strong></td>
                     <td>
                         @foreach( $r->bgp->communities as $c )
-                            ({{implode(',',$c)}})
+                            ({{implode(', ',$c)}})
+                        @endforeach
+                    </td>
+                </tr>
+            @endif
+            @if (isset( $r->bgp->large_communities ))
+                <tr>
+                    <td><strong>BGP :: Large Communities</strong></td>
+                    <td>
+                        @foreach( $r->bgp->large_communities as $c )
+                            ({{implode(', ',$c)}})
                         @endforeach
                     </td>
                 </tr>

resources/views/lg/routes.blade.php

@@ -13,6 +13,7 @@
             <th>Next Hop</th>
             <th></th>
             <th>Metric</th>
+            <th>Communities?</th>
             <th>AS Path</th>
             <th></th>
         </tr>
@@ -39,6 +40,21 @@
             @endif
         </td>
         <td>{{$r->metric}}</td>
+        <td>
+            <span class="badge">
+                @if( isset( $r->bgp->communities ) )
+                    {{ count( $r->bgp->communities ) }}
+                @else
+                    0
+                @endif
+            </span>
+
+            @if( isset( $r->bgp->large_communities ) )
+                <span class="badge">LC:
+                    {{ count( $r->bgp->large_communities ) }}
+                </span>
+            @endif
+        </td>
         <td>
             @if( isset($r->bgp->as_path) )
                 {{implode(' ', $r->bgp->as_path)}}

version.php

@@ -1,3 +1,3 @@
 <?php
 
-$_ENV['BIRDSEYE_API_VERSION'] = '1.0.5';
+$_ENV['BIRDSEYE_API_VERSION'] = '1.1.0';