Hi, all<div><br></div><div>I am building a BGP and OSPF network specified in RFC 3345 which will lead to a BGP oscillation. see below:</div><div><pre class="newpage" style="font-size:1em;margin-top:0px;margin-bottom:0px">      ---------------------------------------------------------------
    /     --------------------               --------------------     \
   |    /                      \           /                      \    |
   |   |       Cluster 1        |         |      Cluster 2         |   |
   |   |                        |         |                        |   |
   |   |                        |   *1    |                        |   |
   |   |         Ra(RR) . . . . . . . . . . . . . . Rd(RR)         |   |
   |   |         .  .           |         |           .            |   |
   |   |       .*5    .*4       |         |           .*12         |   |
   |   |     .          .       |         |           .            |   |
   |   |   Rb(C)        Rc(C)   |         |         Re(C)          |   |
   |   |     .            .     |         |           .            |   |
   |    \    .            .    /           \          .           /    |
   |      ---.------------.---               ---------.----------      |
    \        .(10)        .(1)     AS1                .(0)            /
      -------.------------.---------------------------.--------------
             .            .                           .
          ------            .     ------------      .
        /        \            . /              \   .
       |   AS10   |            |      AS6       |
        \        /              \              /
          ------                  ------------
                .                      .
                   .                   .
                      .       --------------
                         .  /                \
                           |      AS100       |- <a href="http://10.0.0.0/8">10.0.0.0/8</a>
                            \                /
                              --------------

</pre></div><div><br></div><div>The problem is, the router Rd does not perform as expected in selecting the best route.</div><div><br></div><blockquote style="margin:0 0 0 40px;border:none;padding:0px"><div><div><a href="http://10.199.0.0/16">10.199.0.0/16</a>      via 10.1.7.2 on eth2 [SR 14:30] * (100-/5) [AS65002i]</div>
</div><div><div>        Type: BGP unicast univ</div></div><div><div>        BGP.origin: IGP</div></div><div><div>        BGP.as_path: 65002</div></div><div><div>        BGP.next_hop: 10.1.5.2</div></div><div><div>        BGP.med: 1</div>
</div><div><div>        BGP.local_pref: 100</div></div><div><div>        BGP.originator_id: 10.1.4.2</div></div><div><div>        BGP.cluster_list: 10.1.3.3</div></div><div><div>                   via 10.1.1.2 on eth3 [SC 14:29] (100/12) [AS65002i]</div>
</div><div><div>        Type: BGP unicast univ</div></div><div><div>        BGP.origin: IGP</div></div><div><div>        BGP.as_path: 65002</div></div><div><div>        BGP.next_hop: 10.1.1.2</div></div><div><div>        BGP.med: 0</div>
</div></blockquote><div><br></div><div>Should the second route in the above route table be better? as it has a lower med value with the local preference, AS path length and orgins.</div><div><br></div><div>Thanks</div><div>
<br></div><div><br></div><div><br></div><div><br></div>