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<p class=MsoNormal><font size=2 face=Arial><span style='font-size:10.0pt;
font-family:Arial'>This morning, I attempted to deploy a Xorp system configured
as an OSPF ABR. One interface was in the backbone, and all others were in area
0.0.0.2. When the interface in the backbone peered with the other routers in
the backbone, the Xorp system became the DR (it had the highest priority). <o:p></o:p></span></font></p>
<p class=MsoNormal><font size=2 face=Arial><span style='font-size:10.0pt;
font-family:Arial'><o:p> </o:p></span></font></p>
<p class=MsoNormal><font size=2 face=Arial><span style='font-size:10.0pt;
font-family:Arial'>When it became the DR, all of the other routers in the backbone
lost their routes through other backbone-connected routers, including the
default route, which is injected by an ASBR also in the backbone. The whole
topology fell apart. Other routers in the backbone showed that they were peered
with the Xorp system, and that it was the DR, but they were not picking up any
routes from it. The system has an iptables rule set, but nothing in the logs
indicated that any OSPF related traffic was dropped. <o:p></o:p></span></font></p>
<p class=MsoNormal><font size=2 face=Arial><span style='font-size:10.0pt;
font-family:Arial'><o:p> </o:p></span></font></p>
<p class=MsoNormal><font size=2 face=Arial><span style='font-size:10.0pt;
font-family:Arial'>Has anyone had similar problems with Xorp as DR,
particularly if it is the backbone area?<o:p></o:p></span></font></p>
<p class=MsoNormal><font size=2 face=Arial><span style='font-size:10.0pt;
font-family:Arial'><o:p> </o:p></span></font></p>
<p class=MsoNormal><font size=2 face=Arial><span style='font-size:10.0pt;
font-family:Arial'>-Mark Williams<o:p></o:p></span></font></p>
<p class=MsoNormal><font size=2 face=Arial><span style='font-size:10.0pt;
font-family:Arial'><o:p> </o:p></span></font></p>
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