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>