<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 3.2//EN">
<HTML>
<HEAD>
<META HTTP-EQUIV="Content-Type" CONTENT="text/html; charset=iso-8859-1">
<META NAME="Generator" CONTENT="MS Exchange Server version 6.5.7036.0">
<TITLE>OSPF problem present in XORP-1.5</TITLE>
</HEAD>
<BODY>
<!-- Converted from text/rtf format -->
<P DIR=LTR><SPAN LANG="en-us"></SPAN><SPAN LANG="en-us"><FONT SIZE=2 FACE="Arial">Hi,</FONT></SPAN><SPAN LANG="en-us"></SPAN><SPAN LANG="en-us"></SPAN></P>
<P DIR=LTR><SPAN LANG="en-us"></SPAN><SPAN LANG="en-us"></SPAN></P>
<P DIR=LTR><SPAN LANG="en-us"><FONT SIZE=2 FACE="Arial">I</FONT></SPAN><SPAN LANG="en-us"></SPAN><SPAN LANG="en-us"><FONT SIZE=2 FACE="Arial">’</FONT></SPAN><SPAN LANG="en-us"></SPAN><SPAN LANG="en-us"><FONT SIZE=2 FACE="Arial">m currently trying to migrate some of my experiment</FONT></SPAN><SPAN LANG="en-us"></SPAN><SPAN LANG="en-us"><FONT SIZE=2 FACE="Arial">s</FONT></SPAN><SPAN LANG="en-us"></SPAN><SPAN LANG="en-us"><FONT SIZE=2 FACE="Arial"> from XORP-1.4 to XORP-1.5 version, but I</FONT></SPAN><SPAN LANG="en-us"></SPAN><SPAN LANG="en-us"><FONT SIZE=2 FACE="Arial">’</FONT></SPAN><SPAN LANG="en-us"></SPAN><SPAN LANG="en-us"><FONT SIZE=2 FACE="Arial">m having some problems.</FONT></SPAN><SPAN LANG="en-us"></SPAN><SPAN LANG="en-us"></SPAN></P>
<P DIR=LTR><SPAN LANG="en-us"></SPAN><SPAN LANG="en-us"><FONT SIZE=2 FACE="Arial">Before moving to XORP-1.5, I had the following setting running with version 1.4:</FONT></SPAN></P>
<P DIR=LTR><SPAN LANG="en-us"></SPAN><SPAN LANG="en-us"></SPAN></P>
<P DIR=LTR><SPAN LANG="en-us"> <FONT SIZE=2 FACE="Arial">PC1</FONT></SPAN><SPAN LANG="en-us"></SPAN><SPAN LANG="en-us"> <FONT SIZE=2 FACE="Arial">–</FONT></SPAN><SPAN LANG="en-us"></SPAN><SPAN LANG="en-us"><FONT SIZE=2 FACE="Arial"></FONT></SPAN><SPAN LANG="en-us"></SPAN><SPAN LANG="en-us"> <FONT SIZE=2 FACE="Arial"></FONT></SPAN><SPAN LANG="en-us"></SPAN><SPAN LANG="en-us"> <FONT SIZE=2 FACE="Arial">Running</FONT></SPAN><SPAN LANG="en-us"></SPAN><SPAN LANG="en-us"> <FONT SIZE=2 FACE="Arial">as Route Server</FONT></SPAN><SPAN LANG="en-us"></SPAN><SPAN LANG="en-us"><FONT SIZE=2 FACE="Arial"> </FONT></SPAN><SPAN LANG="en-us"></SPAN><SPAN LANG="en-us"> <FONT FACE="Wingdings" SIZE=2>à</FONT></SPAN><SPAN LANG="en-us"></SPAN><SPAN LANG="en-us"><FONT SIZE=2 FACE="Arial"> Running</FONT></SPAN><SPAN LANG="en-us"></SPAN><SPAN LANG="en-us"> <FONT SIZE=2 FACE="Arial">XORP 1.4</FONT></SPAN><SPAN LANG="en-us"></SPAN><SPAN LANG="en-us"></SPAN></P>
<P DIR=LTR><SPAN LANG="en-us"> <FONT SIZE=2 FACE="Arial"> </FONT></SPAN><SPAN LANG="en-us"></SPAN><SPAN LANG="en-us"> <FONT SIZE=2 FACE="Arial"> |</FONT></SPAN><SPAN LANG="en-us"></SPAN><SPAN LANG="en-us"><FONT SIZE=2 FACE="Arial"> </FONT></SPAN><SPAN LANG="en-us"></SPAN><SPAN LANG="en-us"> </SPAN></P>
<P DIR=LTR><SPAN LANG="en-us"></SPAN><SPAN LANG="en-us"> <FONT SIZE=2 FACE="Arial"> </FONT></SPAN><SPAN LANG="en-us"></SPAN><SPAN LANG="en-us"> </SPAN><SPAN LANG="en-us"></SPAN><SPAN LANG="en-us"> <FONT SIZE=2 FACE="Arial">PC</FONT></SPAN><SPAN LANG="en-us"></SPAN><SPAN LANG="en-us"><FONT SIZE=2 FACE="Arial">2</FONT></SPAN><SPAN LANG="en-us"></SPAN><SPAN LANG="en-us"><FONT SIZE=2 FACE="Arial"></FONT></SPAN><SPAN LANG="en-us"></SPAN><SPAN LANG="en-us"> <FONT SIZE=2 FACE="Arial">–</FONT></SPAN><SPAN LANG="en-us"></SPAN><SPAN LANG="en-us"><FONT SIZE=2 FACE="Arial"></FONT></SPAN><SPAN LANG="en-us"></SPAN><SPAN LANG="en-us"> <FONT SIZE=2 FACE="Arial"> </FONT></SPAN><SPAN LANG="en-us"></SPAN><SPAN LANG="en-us"> <FONT SIZE=2 FACE="Arial">Bridge </FONT></SPAN><SPAN LANG="en-us"></SPAN><SPAN LANG="en-us"> <FONT SIZE=2 FACE="Arial"></FONT></SPAN><SPAN LANG="en-us"></SPAN><SPAN LANG="en-us"> <FONT SIZE=2 FACE="Arial"> </FONT></SPAN><SPAN LANG="en-us"></SPAN><SPAN LANG="en-us"> <FONT FACE="Wingdings" SIZE=2>à</FONT></SPAN><SPAN LANG="en-us"></SPAN><SPAN LANG="en-us"><FONT SIZE=2 FACE="Arial"></FONT></SPAN><SPAN LANG="en-us"></SPAN><SPAN LANG="en-us"> <FONT SIZE=2 FACE="Arial"></FONT></SPAN><SPAN LANG="en-us"></SPAN><SPAN LANG="en-us"> <FONT SIZE=2 FACE="Arial">Debian Linux running as packet forwarders</FONT></SPAN><SPAN LANG="en-us"></SPAN><SPAN LANG="en-us"><FONT SIZE=2 FACE="Arial"> (No routing software running here)</FONT></SPAN><SPAN LANG="en-us"></SPAN><SPAN LANG="en-us"></SPAN></P>
<P DIR=LTR><SPAN LANG="en-us"> </SPAN><SPAN LANG="en-us"></SPAN><SPAN LANG="en-us"> <FONT SIZE=2 FACE="Arial"> |</FONT></SPAN><SPAN LANG="en-us"></SPAN><SPAN LANG="en-us"></SPAN></P>
<P DIR=LTR><SPAN LANG="en-us"></SPAN><SPAN LANG="en-us"> <FONT SIZE=2 FACE="Arial"> </FONT></SPAN><SPAN LANG="en-us"></SPAN><SPAN LANG="en-us"> </SPAN><SPAN LANG="en-us"></SPAN><SPAN LANG="en-us"> <FONT SIZE=2 FACE="Arial">Router 1 </FONT></SPAN><SPAN LANG="en-us"></SPAN><SPAN LANG="en-us"> <FONT SIZE=2 FACE="Arial"></FONT></SPAN><SPAN LANG="en-us"></SPAN><SPAN LANG="en-us"> <FONT FACE="Wingdings" SIZE=2>à</FONT></SPAN><SPAN LANG="en-us"></SPAN><SPAN LANG="en-us"><FONT SIZE=2 FACE="Arial"> Running XORP 1.4</FONT></SPAN><SPAN LANG="en-us"></SPAN><SPAN LANG="en-us"></SPAN></P>
<P DIR=LTR><SPAN LANG="en-us"> <FONT SIZE=2 FACE="Arial"> |</FONT></SPAN></P>
<P DIR=LTR><SPAN LANG="en-us"> <FONT SIZE=2 FACE="Arial">Router 2 </FONT></SPAN><SPAN LANG="en-us"></SPAN><SPAN LANG="en-us"> <FONT FACE="Wingdings" SIZE=2>à</FONT></SPAN><SPAN LANG="en-us"></SPAN><SPAN LANG="en-us"><FONT SIZE=2 FACE="Arial"> Running XORP 1.4</FONT></SPAN><SPAN LANG="en-us"></SPAN><SPAN LANG="en-us"></SPAN></P>
<P DIR=LTR><SPAN LANG="en-us"><FONT SIZE=2 FACE="Arial">Basically I</FONT></SPAN><SPAN LANG="en-us"></SPAN><SPAN LANG="en-us"><FONT SIZE=2 FACE="Arial">’</FONT></SPAN><SPAN LANG="en-us"></SPAN><SPAN LANG="en-us"><FONT SIZE=2 FACE="Arial">m</FONT></SPAN><SPAN LANG="en-us"></SPAN><SPAN LANG="en-us"> <FONT SIZE=2 FACE="Arial">using</FONT></SPAN><SPAN LANG="en-us"></SPAN><SPAN LANG="en-us"> <FONT SIZE=2 FACE="Arial">XORP as an OSPF Route Server</FONT></SPAN><SPAN LANG="en-us"></SPAN><SPAN LANG="en-us"><FONT SIZE=2 FACE="Arial"> which is running in PC1. PC2 is just a box that is in charge of all the forwarding with</FONT></SPAN><SPAN LANG="en-us"></SPAN><SPAN LANG="en-us"><FONT SIZE=2 FACE="Arial">out</FONT></SPAN><SPAN LANG="en-us"></SPAN><SPAN LANG="en-us"><FONT SIZE=2 FACE="Arial"> doing any routing calculating. With previous setup, I can exchange packets between PC1 and Router1 without any problem and OSPF runs f</FONT></SPAN><SPAN LANG="en-us"></SPAN><SPAN LANG="en-us"><FONT SIZE=2 FACE="Arial">ine and</FONT></SPAN><SPAN LANG="en-us"></SPAN><SPAN LANG="en-us"> <FONT SIZE=2 FACE="Arial">I see how the adjacencies are form.</FONT></SPAN><SPAN LANG="en-us"></SPAN><SPAN LANG="en-us"> </SPAN></P>
<P DIR=LTR><SPAN LANG="en-us"><FONT SIZE=2 FACE="Arial">The problem comes when running XORP-1.5, I cannot make the previous setup work. The OSPF neighbours</FONT></SPAN><SPAN LANG="en-us"></SPAN><SPAN LANG="en-us"><FONT SIZE=2 FACE="Arial">’</FONT></SPAN><SPAN LANG="en-us"></SPAN><SPAN LANG="en-us"><FONT SIZE=2 FACE="Arial"> state remains in</FONT></SPAN><SPAN LANG="en-us"></SPAN><SPAN LANG="en-us"> </SPAN></P>
<P DIR=LTR><SPAN LANG="en-us"></SPAN><SPAN LANG="en-us"><FONT SIZE=2 FACE="Arial">ExStart</FONT></SPAN><SPAN LANG="en-us"></SPAN><SPAN LANG="en-us"><FONT SIZE=2 FACE="Arial"> , which means that the OSPF packets are seen by both ends but for some reason they cannot</FONT></SPAN><SPAN LANG="en-us"></SPAN><SPAN LANG="en-us"> <FONT SIZE=2 FACE="Arial">form the adjacency. </FONT></SPAN></P>
<P DIR=LTR><SPAN LANG="en-us"><FONT SIZE=2 FACE="Arial">This is the output of my debugging:</FONT></SPAN></P>
<P DIR=LTR><SPAN LANG="en-us"></SPAN><SPAN LANG="en-us"><FONT SIZE=2 FACE="Arial">On PC1 (Router Server):</FONT></SPAN></P>
<P DIR=LTR><SPAN LANG="en-us"></SPAN><SPAN LANG="en-us"><FONT SIZE=2 FACE="Arial">root@Route-Server> show ospf4 neighbor </FONT></SPAN></P>
<P DIR=LTR><SPAN LANG="en-us"><FONT SIZE=2 FACE="Arial"> Address Interface State ID Pri Dead</FONT></SPAN></P>
<P DIR=LTR><SPAN LANG="en-us"><FONT SIZE=2 FACE="Arial">192.168.1.3 eth1.13/eth1.13 ExStart 192.168.1.3 128 39</FONT></SPAN></P>
<P DIR=LTR><SPAN LANG="en-us"><FONT SIZE=2 FACE="Arial">192.168.2.3 eth1.14/eth1.14 ExStart 192.168.2.3 128 39</FONT></SPAN></P>
<P DIR=LTR><SPAN LANG="en-us"><FONT SIZE=2 FACE="Arial">root@Route-Server> show ospf4 database </FONT></SPAN></P>
<P DIR=LTR><SPAN LANG="en-us"><FONT SIZE=2 FACE="Arial"> OSPF link state database, Area 0.0.0.0</FONT></SPAN></P>
<P DIR=LTR><SPAN LANG="en-us"><FONT SIZE=2 FACE="Arial"> Type ID Adv Rtr Seq Age Opt Cksum Len</FONT></SPAN></P>
<P DIR=LTR><SPAN LANG="en-us"><FONT SIZE=2 FACE="Arial">Router *172.16.0.2 172.16.0.2 0x80000001 434 0x2 0x68b7 60</FONT></SPAN></P>
<P DIR=LTR><SPAN LANG="en-us"><FONT SIZE=2 FACE="Arial">root@Route-Server> show ospf4 database detail </FONT></SPAN></P>
<P DIR=LTR><SPAN LANG="en-us"><FONT SIZE=2 FACE="Arial"> OSPF link state database, Area 0.0.0.0</FONT></SPAN></P>
<P DIR=LTR><SPAN LANG="en-us"><FONT SIZE=2 FACE="Arial">Router-LSA:</FONT></SPAN></P>
<P DIR=LTR><SPAN LANG="en-us"><FONT SIZE=2 FACE="Arial">LS age 436 Options 0x2 DC: 0 EA: 0 N/P: 0 MC: 0 E: 1 LS type 0x1 Link State ID 172.16.0.2 Advertising Router 172.16.0.2 LS sequence number 0x80000001 LS checksum 0x68b7 length 60</FONT></SPAN></P>
<P DIR=LTR><SPAN LANG="en-us"><FONT SIZE=2 FACE="Arial"> bit Nt false</FONT></SPAN></P>
<P DIR=LTR><SPAN LANG="en-us"><FONT SIZE=2 FACE="Arial"> bit V false</FONT></SPAN></P>
<P DIR=LTR><SPAN LANG="en-us"><FONT SIZE=2 FACE="Arial"> bit E false</FONT></SPAN></P>
<P DIR=LTR><SPAN LANG="en-us"><FONT SIZE=2 FACE="Arial"> bit B false</FONT></SPAN></P>
<P DIR=LTR><SPAN LANG="en-us"><FONT SIZE=2 FACE="Arial"> Type 3 Stub network Subnet number 172.16.0.0 Mask 255.255.255.0 Metric 1</FONT></SPAN></P>
<P DIR=LTR><SPAN LANG="en-us"><FONT SIZE=2 FACE="Arial"> Type 3 Stub network Subnet number 192.168.1.0 Mask 255.255.255.0 Metric 1</FONT></SPAN></P>
<P DIR=LTR><SPAN LANG="en-us"><FONT SIZE=2 FACE="Arial"> Type 3 Stub network Subnet number 192.168.2.0 Mask 255.255.255.0 Me</FONT></SPAN><SPAN LANG="en-us"></SPAN><SPAN LANG="en-us"><FONT SIZE=2 FACE="Arial">tric 1</FONT></SPAN></P>
<P DIR=LTR><SPAN LANG="en-us"></SPAN><SPAN LANG="en-us"><FONT SIZE=2 FACE="Arial">root@Route-Server> show ospf4 neighbor detail </FONT></SPAN></P>
<P DIR=LTR><SPAN LANG="en-us"><FONT SIZE=2 FACE="Arial"> Address Interface State ID Pri Dead</FONT></SPAN></P>
<P DIR=LTR><SPAN LANG="en-us"><FONT SIZE=2 FACE="Arial">192.168.1.3 eth1.13/eth1.13 ExStart 192.168.1.3 128 29</FONT></SPAN></P>
<P DIR=LTR><SPAN LANG="en-us"><FONT SIZE=2 FACE="Arial"> Area 0.0.0.0, opt 0x2, DR 192.168.1.3, BDR 192.168.1.2</FONT></SPAN></P>
<P DIR=LTR><SPAN LANG="en-us"><FONT SIZE=2 FACE="Arial"> Up 00:07:21</FONT></SPAN></P>
<P DIR=LTR><SPAN LANG="en-us"><FONT SIZE=2 FACE="Arial">192.168.2.3 eth1.14/eth1.14 ExStart 192.168.2.3 128 39</FONT></SPAN></P>
<P DIR=LTR><SPAN LANG="en-us"><FONT SIZE=2 FACE="Arial"> Area 0.0.0.0, opt 0x2, DR 192.168.2.3, BDR 192.168.2.2</FONT></SPAN></P>
<P DIR=LTR><SPAN LANG="en-us"><FONT SIZE=2 FACE="Arial"> Up 00:07:11</FONT></SPAN><SPAN LANG="en-us"></SPAN><SPAN LANG="en-us"></SPAN></P>
<P DIR=LTR><SPAN LANG="en-us"></SPAN><SPAN LANG="en-us"><FONT SIZE=2 FACE="Arial">On Router 1:</FONT></SPAN></P>
<P DIR=LTR><SPAN LANG="en-us"></SPAN><SPAN LANG="en-us"><FONT SIZE=2 FACE="Arial">root@XORP1> show ospf4 neighbor </FONT></SPAN></P>
<P DIR=LTR><SPAN LANG="en-us"><FONT SIZE=2 FACE="Arial"> Address Interface State ID Pri Dead</FONT></SPAN></P>
<P DIR=LTR><SPAN LANG="en-us"><FONT SIZE=2 FACE="Arial">192.168.2.2 eth1/eth1 ExStart 172.16.0.2 128 31</FONT></SPAN></P>
<P DIR=LTR><SPAN LANG="en-us"><FONT SIZE=2 FACE="Arial">192.168.4.2 eth2/eth2 Full 192.168.3.2 128 39</FONT></SPAN></P>
<P DIR=LTR><SPAN LANG="en-us"><FONT SIZE=2 FACE="Arial">root@XORP1> show ospf4 neighbor det</FONT></SPAN></P>
<P DIR=LTR><SPAN LANG="en-us"><FONT SIZE=2 FACE="Arial">Possible completions:</FONT></SPAN></P>
<P DIR=LTR><SPAN LANG="en-us"><FONT SIZE=2 FACE="Arial"> <neighbor> Show Neighbors</FONT></SPAN></P>
<P DIR=LTR><SPAN LANG="en-us"><FONT SIZE=2 FACE="Arial"> detail Show Neighbors</FONT></SPAN></P>
<P DIR=LTR><SPAN LANG="en-us"><FONT SIZE=2 FACE="Arial">root@XORP1> show ospf4 neighbor detail </FONT></SPAN></P>
<P DIR=LTR><SPAN LANG="en-us"><FONT SIZE=2 FACE="Arial"> Address Interface State ID Pri Dead</FONT></SPAN></P>
<P DIR=LTR><SPAN LANG="en-us"><FONT SIZE=2 FACE="Arial">192.168.2.2 eth1/eth1 ExStart 172.16.0.2 128 37</FONT></SPAN></P>
<P DIR=LTR><SPAN LANG="en-us"><FONT SIZE=2 FACE="Arial"> Area 0.0.0.0, opt 0x2, DR 192.168.2.3, BDR 192.168.2.2</FONT></SPAN></P>
<P DIR=LTR><SPAN LANG="en-us"><FONT SIZE=2 FACE="Arial"> Up 00:39:43</FONT></SPAN></P>
<P DIR=LTR><SPAN LANG="en-us"><FONT SIZE=2 FACE="Arial">192.168.4.2 eth2/eth2 Full 192.168.3.2 128 35</FONT></SPAN></P>
<P DIR=LTR><SPAN LANG="en-us"><FONT SIZE=2 FACE="Arial"> Area 0.0.0.0, opt 0x2, DR 192.168.4.2, BDR 192.168.4.1</FONT></SPAN></P>
<P DIR=LTR><SPAN LANG="en-us"><FONT SIZE=2 FACE="Arial"> Up 00:40:15, adjacent 00:39:29</FONT></SPAN><SPAN LANG="en-us"></SPAN><SPAN LANG="en-us"></SPAN></P>
<P DIR=LTR><SPAN LANG="en-us"></SPAN><SPAN LANG="en-us"><FONT SIZE=2 FACE="Arial">root@XORP1> show ospf4 database </FONT></SPAN></P>
<P DIR=LTR><SPAN LANG="en-us"><FONT SIZE=2 FACE="Arial"> OSPF link state database, Area 0.0.0.0</FONT></SPAN></P>
<P DIR=LTR><SPAN LANG="en-us"><FONT SIZE=2 FACE="Arial"> Type ID Adv Rtr Seq Age Opt Cksum Len</FONT></SPAN></P>
<P DIR=LTR><SPAN LANG="en-us"></SPAN><SPAN LANG="en-us"></SPAN><SPAN LANG="fr"><FONT SIZE=2 FACE="Arial">Router *192.168.2.3 192.168.2.3 0x80000002 593 0x2 0x73a7 48</FONT></SPAN></P>
<P DIR=LTR><SPAN LANG="fr"><FONT SIZE=2 FACE="Arial">Router 192.168.3.2 192.168.3.2 0x80000004 594 0x2 0xf0b6 48</FONT></SPAN></P>
<P DIR=LTR><SPAN LANG="en-us"></SPAN><SPAN LANG="en-us"><FONT SIZE=2 FACE="Arial">Router 192.168.1.3 192.168.1.3 0x80000003 595 0x2 0x4cd2 48</FONT></SPAN></P>
<P DIR=LTR><SPAN LANG="en-us"><FONT SIZE=2 FACE="Arial">Network 192.168.3.2 192.168.3.2 0x80000002 594 0x2 0x8c14 32</FONT></SPAN></P>
<P DIR=LTR><SPAN LANG="en-us"><FONT SIZE=2 FACE="Arial">Network 192.168.4.2 192.168.3.2 0x80000002 594 0x2 0x8e10 32</FONT></SPAN></P>
<P DIR=LTR><SPAN LANG="en-us"><FONT SIZE=2 FACE="Arial">root@XORP1> show ospf4 database detail </FONT></SPAN></P>
<P DIR=LTR><SPAN LANG="en-us"><FONT SIZE=2 FACE="Arial"> OSPF link state database, Area 0.0.0.0</FONT></SPAN></P>
<P DIR=LTR><SPAN LANG="en-us"><FONT SIZE=2 FACE="Arial">Router-LSA:</FONT></SPAN></P>
<P DIR=LTR><SPAN LANG="en-us"><FONT SIZE=2 FACE="Arial">LS age 596 Options 0x2 DC: 0 EA: 0 N/P: 0 MC: 0 E: 1 LS type 0x1 Link State ID 192.168.2.3 Advertising Router 192.168.2.3 LS sequence number 0x80000002 LS checksum 0x73a7 length 48</FONT></SPAN></P>
<P DIR=LTR><SPAN LANG="en-us"><FONT SIZE=2 FACE="Arial"> bit Nt false</FONT></SPAN></P>
<P DIR=LTR><SPAN LANG="en-us"><FONT SIZE=2 FACE="Arial"> bit V false</FONT></SPAN></P>
<P DIR=LTR><SPAN LANG="en-us"><FONT SIZE=2 FACE="Arial"> bit E false</FONT></SPAN></P>
<P DIR=LTR><SPAN LANG="en-us"><FONT SIZE=2 FACE="Arial"> bit B false</FONT></SPAN></P>
<P DIR=LTR><SPAN LANG="en-us"><FONT SIZE=2 FACE="Arial"> Type 3 Stub network Subnet number 192.168.2.0 Mask 255.255.255.0 Metric 1</FONT></SPAN></P>
<P DIR=LTR><SPAN LANG="en-us"><FONT SIZE=2 FACE="Arial"> Type 2 Transit network IP address of Designated router 192.168.4.2 Routers interface address 192.168.4.1 Metric 1</FONT></SPAN></P>
<P DIR=LTR><SPAN LANG="en-us"><FONT SIZE=2 FACE="Arial">Router-LSA:</FONT></SPAN></P>
<P DIR=LTR><SPAN LANG="en-us"><FONT SIZE=2 FACE="Arial">LS age 597 Options 0x2 DC: 0 EA: 0 N/P: 0 MC: 0 E: 1 LS type 0x1 Link State ID 192.168.3.2 Advertising Router 192.168.3.2 LS sequence number 0x80000004 LS checksum 0xf0b6 length 48</FONT></SPAN></P>
<P DIR=LTR><SPAN LANG="en-us"><FONT SIZE=2 FACE="Arial"> bit Nt false</FONT></SPAN></P>
<P DIR=LTR><SPAN LANG="en-us"><FONT SIZE=2 FACE="Arial"> bit V false</FONT></SPAN></P>
<P DIR=LTR><SPAN LANG="en-us"><FONT SIZE=2 FACE="Arial"> bit E false</FONT></SPAN></P>
<P DIR=LTR><SPAN LANG="en-us"><FONT SIZE=2 FACE="Arial"> bit B false</FONT></SPAN></P>
<P DIR=LTR><SPAN LANG="en-us"><FONT SIZE=2 FACE="Arial"> Type 2 Transit network IP address of Designated router 192.168.4.2 Routers interface address 192.168.4.2 Metric 1</FONT></SPAN></P>
<P DIR=LTR><SPAN LANG="en-us"><FONT SIZE=2 FACE="Arial"> Type 2 Transit network IP address of Designated router 192.168.3.2 Routers interface address 192.168.3.2 Metric 1</FONT></SPAN></P>
<P DIR=LTR><SPAN LANG="en-us"><FONT SIZE=2 FACE="Arial">Router-LSA:</FONT></SPAN></P>
<P DIR=LTR><SPAN LANG="en-us"><FONT SIZE=2 FACE="Arial">LS age 598 Options 0x2 DC: 0 EA: 0 N/P: 0 MC: 0 E: 1 LS type 0x1 Link State ID 192.168.1.3 Advertising Router 192.168.1.3 LS sequence number 0x80000003 LS checksum 0x4cd2 length 48</FONT></SPAN></P>
<P DIR=LTR><SPAN LANG="en-us"><FONT SIZE=2 FACE="Arial"> bit Nt false</FONT></SPAN></P>
<P DIR=LTR><SPAN LANG="en-us"><FONT SIZE=2 FACE="Arial"> bit V false</FONT></SPAN></P>
<P DIR=LTR><SPAN LANG="en-us"><FONT SIZE=2 FACE="Arial"> bit E false</FONT></SPAN></P>
<P DIR=LTR><SPAN LANG="en-us"><FONT SIZE=2 FACE="Arial"> bit B false</FONT></SPAN></P>
<P DIR=LTR><SPAN LANG="en-us"><FONT SIZE=2 FACE="Arial"> Type 3 Stub network Subnet number 192.168.1.0 Mask 255.255.255.0 Metric 1</FONT></SPAN></P>
<P DIR=LTR><SPAN LANG="en-us"><FONT SIZE=2 FACE="Arial"> Type 2 Transit network IP address of Designated router 192.168.3.2 Routers interface address 192.168.3.1 Metric 1</FONT></SPAN></P>
<P DIR=LTR><SPAN LANG="en-us"><FONT SIZE=2 FACE="Arial">Network-LSA:</FONT></SPAN></P>
<P DIR=LTR><SPAN LANG="en-us"><FONT SIZE=2 FACE="Arial">LS age 597 Options 0x2 DC: 0 EA: 0 N/P: 0 MC: 0 E: 1 LS type 0x2 Link State ID 192.168.3.2 Advertising Router 192.168.3.2 LS sequence number 0x80000002 LS checksum 0x8c14 length 32</FONT></SPAN></P>
<P DIR=LTR><SPAN LANG="en-us"><FONT SIZE=2 FACE="Arial"> Network Mask 0xffffff00</FONT></SPAN></P>
<P DIR=LTR><SPAN LANG="en-us"><FONT SIZE=2 FACE="Arial"> Attached Router 192.168.3.2</FONT></SPAN></P>
<P DIR=LTR><SPAN LANG="en-us"><FONT SIZE=2 FACE="Arial"> Attached Router 192.168.1.3</FONT></SPAN></P>
<P DIR=LTR><SPAN LANG="en-us"><FONT SIZE=2 FACE="Arial">Network-LSA:</FONT></SPAN></P>
<P DIR=LTR><SPAN LANG="en-us"><FONT SIZE=2 FACE="Arial">LS age 597 Options 0x2 DC: 0 EA: 0 N/P: 0 MC: 0 E: 1 LS type 0x2 Link State ID 192.168.4.2 Advertising Router 192.168.3.2 LS sequence number 0x80000002 LS checksum 0x8e10 length 32</FONT></SPAN></P>
<P DIR=LTR><SPAN LANG="en-us"><FONT SIZE=2 FACE="Arial"> Network Mask 0xffffff00</FONT></SPAN></P>
<P DIR=LTR><SPAN LANG="en-us"><FONT SIZE=2 FACE="Arial"> Attached Router 192.168.3.2</FONT></SPAN></P>
<P DIR=LTR><SPAN LANG="en-us"><FONT SIZE=2 FACE="Arial"> Attached Router 192.168.2.3</FONT></SPAN><SPAN LANG="en-us"></SPAN><SPAN LANG="en-us"></SPAN></P>
<P DIR=LTR><SPAN LANG="en-us"><FONT SIZE=2 FACE="Arial">On PC2 (Bridge):</FONT></SPAN><SPAN LANG="en-us"></SPAN><SPAN LANG="en-us"> <FONT SIZE=2 FACE="Arial">T</FONT></SPAN><SPAN LANG="en-us"></SPAN><SPAN LANG="en-us"><FONT SIZE=2 FACE="Arial">cpdump output while Router 1 and PC 1 are trying to establish an adjacency</FONT></SPAN></P>
<P DIR=LTR><SPAN LANG="en-us"></SPAN><SPAN LANG="en-us"><FONT SIZE=2 FACE="Arial">FwdM1:~# tcpdump -i eth2 -v</FONT></SPAN></P>
<P DIR=LTR><SPAN LANG="en-us"><FONT SIZE=2 FACE="Arial">tcpdump: WARNING: eth2: no IPv4 address assigned</FONT></SPAN></P>
<P DIR=LTR><SPAN LANG="en-us"><FONT SIZE=2 FACE="Arial">tcpdump: listening on eth2, link-type EN10MB (Ethernet), capture size 96 bytes</FONT></SPAN></P>
<P DIR=LTR><SPAN LANG="en-us"><FONT SIZE=2 FACE="Arial">20:56:20.103523 IP (tos 0xc0, ttl 1, id 42263, offset 0, flags [none], proto OSPF (89), length 68) 192.168.2.2 > OSPF-ALL.MCAST.NET: OSPFv2, Hello, length: 48</FONT></SPAN></P>
<P DIR=LTR><SPAN LANG="en-us"><FONT SIZE=2 FACE="Arial"> Router-ID: 172.16.0.2, Backbone Area, Authentication Type: none (0)</FONT></SPAN></P>
<P DIR=LTR><SPAN LANG="en-us"><FONT SIZE=2 FACE="Arial"> Options: [External]</FONT></SPAN></P>
<P DIR=LTR><SPAN LANG="en-us"><FONT SIZE=2 FACE="Arial"> Hello Timer: 10s, Dead Timer 40s, Mask: 255.255.255.0, Priority: 128</FONT></SPAN></P>
<P DIR=LTR><SPAN LANG="en-us"><FONT SIZE=2 FACE="Arial"> Designated Router 192.168.2.3, Backup Designated Router 192.168.2.2</FONT></SPAN></P>
<P DIR=LTR><SPAN LANG="en-us"><FONT SIZE=2 FACE="Arial"> Neighbor List:</FONT></SPAN></P>
<P DIR=LTR><SPAN LANG="en-us"><FONT SIZE=2 FACE="Arial"> 192.168.2.3</FONT></SPAN></P>
<P DIR=LTR><SPAN LANG="en-us"><FONT SIZE=2 FACE="Arial">20:56:21.509478 IP (tos 0xc0, ttl 1, id 64760, offset 0, flags [none], proto OSPF (89), length 52) 192.168.2.3 > 192.168.2.2: OSPFv2, Database Description, length: 32</FONT></SPAN></P>
<P DIR=LTR><SPAN LANG="en-us"><FONT SIZE=2 FACE="Arial"> Router-ID: 192.168.2.3, Backbone Area, Authentication Type: none (0)</FONT></SPAN></P>
<P DIR=LTR><SPAN LANG="en-us"><FONT SIZE=2 FACE="Arial"> Options: [External], DD Flags: [Init, More, Master]</FONT></SPAN></P>
<P DIR=LTR><SPAN LANG="en-us"></SPAN><SPAN LANG="en-us"><FONT COLOR="#FF0000" SIZE=2 FACE="Arial">20:56:21.509510 IP (tos 0xc0, ttl 64, id 47641, offset 0, flags [none], proto ICMP (1), length 80) 192.168.2.1 > 192.168.2.3: ICMP time exceeded in-transit, length 60</FONT></SPAN><SPAN LANG="en-us"></SPAN><SPAN LANG="en-us"><FONT COLOR="#FF0000" SIZE=2 FACE="Arial"></FONT></SPAN><SPAN LANG="en-us"></SPAN><SPAN LANG="en-us"> <FONT FACE="Wingdings" SIZE=2>à</FONT></SPAN><SPAN LANG="en-us"></SPAN><SPAN LANG="en-us"><FONT COLOR="#FF0000" SIZE=2 FACE="Arial"> For some reason both ends are rejecting its LSA packets!!!</FONT></SPAN><SPAN LANG="en-us"></SPAN><SPAN LANG="en-us"></SPAN></P>
<P DIR=LTR><SPAN LANG="en-us"></SPAN><SPAN LANG="en-us"><FONT SIZE=2 FACE="Arial"> IP (tos 0xc0, ttl 1, id 64760, offset 0, flags [none], proto OSPF (89), length 52) 192.168.2.3 > 192.168.2.2: OSPFv2, Database Description, length: 32</FONT></SPAN></P>
<P DIR=LTR><SPAN LANG="en-us"><FONT SIZE=2 FACE="Arial"> Router-ID: 192.168.2.3, Backbone Area, Authentication Type: none (0)</FONT></SPAN></P>
<P DIR=LTR><SPAN LANG="en-us"><FONT SIZE=2 FACE="Arial"> Options: [External], DD Flags: [Init, More, Master]</FONT></SPAN></P>
<P DIR=LTR><SPAN LANG="en-us"><FONT SIZE=2 FACE="Arial">20:56:26.133523 IP (tos 0xc0, ttl 1, id 29548, offset 0, flags [none], proto OSPF (89), length 68) 192.168.2.3 > OSPF-ALL.MCAST.NET: OSPFv2, Hello, length: 48</FONT></SPAN></P>
<P DIR=LTR><SPAN LANG="en-us"><FONT SIZE=2 FACE="Arial"> Router-ID: 192.168.2.3, Backbone Area, Authentication Type: none (0)</FONT></SPAN></P>
<P DIR=LTR><SPAN LANG="en-us"><FONT SIZE=2 FACE="Arial"> Options: [External]</FONT></SPAN></P>
<P DIR=LTR><SPAN LANG="en-us"><FONT SIZE=2 FACE="Arial"> Hello Timer: 10s, Dead Timer 40s, Mask: 255.255.255.0, Priority: 128</FONT></SPAN></P>
<P DIR=LTR><SPAN LANG="en-us"><FONT SIZE=2 FACE="Arial"> Designated Router 192.168.2.3, Backup Designated Router 192.168.2.2</FONT></SPAN></P>
<P DIR=LTR><SPAN LANG="en-us"><FONT SIZE=2 FACE="Arial"> Neighbor List:</FONT></SPAN></P>
<P DIR=LTR><SPAN LANG="en-us"><FONT SIZE=2 FACE="Arial"> 172.16.0.2</FONT></SPAN></P>
<P DIR=LTR><SPAN LANG="en-us"><FONT SIZE=2 FACE="Arial">20:56:26.133719 IP (tos 0xc0, ttl 1, id 64761, offset 0, flags [none], proto OSPF (89), length 52) 192.168.2.3 > 192.168.2.2: OSPFv2, Database Description, length: 32</FONT></SPAN></P>
<P DIR=LTR><SPAN LANG="en-us"><FONT SIZE=2 FACE="Arial"> Router-ID: 192.168.2.3, Backbone Area, Authentication Type: none (0)</FONT></SPAN></P>
<P DIR=LTR><SPAN LANG="en-us"><FONT SIZE=2 FACE="Arial"> Options: [External], DD Flags: [Init, More, Master]</FONT></SPAN></P>
<P DIR=LTR><SPAN LANG="en-us"></SPAN><SPAN LANG="en-us"><FONT COLOR="#FF0000" SIZE=2 FACE="Arial">20:56:26.133739 IP (tos 0xc0, ttl 64, id 47642, offset 0, flags [none], proto ICMP (1), length 80) 192.168.2.1 > 192.168.2.3: ICMP time exceeded in-transit, length 60</FONT></SPAN></P>
<P DIR=LTR><SPAN LANG="en-us"></SPAN><SPAN LANG="en-us"><FONT SIZE=2 FACE="Arial"> IP (tos 0xc0, ttl 1, id 64761, offset 0, flags [none], proto OSPF (89), length 52) 192.168.2.3 > 192.168.2.2: OSPFv2, Database Description, length: 32</FONT></SPAN></P>
<P DIR=LTR><SPAN LANG="en-us"><FONT SIZE=2 FACE="Arial"> Router-ID: 192.168.2.3, Backbone Area, Authentication Type: none (0)</FONT></SPAN></P>
<P DIR=LTR><SPAN LANG="en-us"><FONT SIZE=2 FACE="Arial"> Options: [External], DD Flags: [Init, More, Master]</FONT></SPAN></P>
<P DIR=LTR><SPAN LANG="en-us"><FONT SIZE=2 FACE="Arial">20:56:26.509440 arp who-has 192.168.2.3 tell 192.168.2.1</FONT></SPAN></P>
<P DIR=LTR><SPAN LANG="en-us"><FONT SIZE=2 FACE="Arial">20:56:26.549518 arp reply 192.168.2.3 is-at 52:54:00:12:38:52 (oui Unknown)</FONT></SPAN></P>
<P DIR=LTR><SPAN LANG="en-us"><FONT SIZE=2 FACE="Arial">20:56:30.103479 IP (tos 0xc0, ttl 1, id 42266, offset 0, flags [none], proto OSPF (89), length 68) 192.168.2.2 > OSPF-ALL.MCAST.NET: OSPFv2, Hello, length: 48</FONT></SPAN></P>
<P DIR=LTR><SPAN LANG="en-us"><FONT SIZE=2 FACE="Arial"> Router-ID: 172.16.0.2, Backbone Area, Authentication Type: none (0)</FONT></SPAN></P>
<P DIR=LTR><SPAN LANG="en-us"><FONT SIZE=2 FACE="Arial"> Options: [External]</FONT></SPAN></P>
<P DIR=LTR><SPAN LANG="en-us"><FONT SIZE=2 FACE="Arial"> Hello Timer: 10s, Dead Timer 40s, Mask: 255.255.255.0, Priority: 128</FONT></SPAN></P>
<P DIR=LTR><SPAN LANG="en-us"><FONT SIZE=2 FACE="Arial"> Designated Router 192.168.2.3, Backup Designated Router 192.168.2.2</FONT></SPAN></P>
<P DIR=LTR><SPAN LANG="en-us"><FONT SIZE=2 FACE="Arial"> Neighbor List:</FONT></SPAN></P>
<P DIR=LTR><SPAN LANG="en-us"><FONT SIZE=2 FACE="Arial"> 192.168.2.3</FONT></SPAN></P>
<P DIR=LTR><SPAN LANG="en-us"><FONT SIZE=2 FACE="Arial">20:56:31.038015 IP (tos 0xc0, ttl 1, id 64762, offset 0, flags [none], proto OSPF (89), length 52) 192.168.2.3 > 192.168.2.2: OSPFv2, Database Description, length: 32</FONT></SPAN></P>
<P DIR=LTR><SPAN LANG="en-us"><FONT SIZE=2 FACE="Arial"> Router-ID: 192.168.2.3, Backbone Area, Authentication Type: none (0)</FONT></SPAN></P>
<P DIR=LTR><SPAN LANG="en-us"><FONT SIZE=2 FACE="Arial"> Options: [External], DD Flags: [Init, More, Master]</FONT></SPAN></P>
<P DIR=LTR><SPAN LANG="en-us"></SPAN><SPAN LANG="en-us"><FONT COLOR="#FF0000" SIZE=2 FACE="Arial">20:56:31.038040 IP (tos 0xc0, ttl 64, id 47643, offset 0, flags [none], proto ICMP (1), length 80) 192.168.2.1 > 192.168.2.3: ICMP time exceeded in-transit, length 60</FONT></SPAN></P>
<P DIR=LTR><SPAN LANG="en-us"></SPAN><SPAN LANG="en-us"><FONT SIZE=2 FACE="Arial"> IP (tos 0xc0, ttl 1, id 64762, offset 0, flags [none], proto OSPF (89), length 52) 192.168.2.3 > 192.168.2.2: OSPFv2, Database Description, length: 32</FONT></SPAN></P>
<P DIR=LTR><SPAN LANG="en-us"><FONT SIZE=2 FACE="Arial"> Router-ID: 192.168.2.3, Backbone Area, Authentication Type: none (0)</FONT></SPAN></P>
<P DIR=LTR><SPAN LANG="en-us"><FONT SIZE=2 FACE="Arial"> Options: [External], DD Flags: [Init, More, Master]</FONT></SPAN></P>
<P DIR=LTR><SPAN LANG="en-us"><FONT SIZE=2 FACE="Arial">20:56:36.077607 IP (tos 0xc0, ttl 1, id 29550, offset 0, flags [none], proto OSPF (89), length 68) 192.168.2.3 > OSPF-ALL.MCAST.NET: OSPFv2, Hello, length: 48</FONT></SPAN></P>
<P DIR=LTR><SPAN LANG="en-us"><FONT SIZE=2 FACE="Arial"> Router-ID: 192.168.2.3, Backbone Area, Authentication Type: none (0)</FONT></SPAN></P>
<P DIR=LTR><SPAN LANG="en-us"><FONT SIZE=2 FACE="Arial"> Options: [External]</FONT></SPAN></P>
<P DIR=LTR><SPAN LANG="en-us"><FONT SIZE=2 FACE="Arial"> Hello Timer: 10s, Dead Timer 40s, Mask: 255.255.255.0, Priority: 128</FONT></SPAN></P>
<P DIR=LTR><SPAN LANG="en-us"><FONT SIZE=2 FACE="Arial"> Designated Router 192.168.2.3, Backup Designated Router 192.168.2.2</FONT></SPAN></P>
<P DIR=LTR><SPAN LANG="en-us"><FONT SIZE=2 FACE="Arial"> Neighbor List:</FONT></SPAN></P>
<P DIR=LTR><SPAN LANG="en-us"><FONT SIZE=2 FACE="Arial"> 172.16.0.2</FONT></SPAN></P>
<P DIR=LTR><SPAN LANG="en-us"><FONT SIZE=2 FACE="Arial">20:56:36.077788 IP (tos 0xc0, ttl 1, id 64763, offset 0, flags [none], proto OSPF (89), length 52) 192.168.2.3 > 192.168.2.2: OSPFv2, Database Description, length: 32</FONT></SPAN></P>
<P DIR=LTR><SPAN LANG="en-us"><FONT SIZE=2 FACE="Arial"> Router-ID: 192.168.2.3, Backbone Area, Authentication Type: none (0)</FONT></SPAN></P>
<P DIR=LTR><SPAN LANG="en-us"><FONT SIZE=2 FACE="Arial"> Options: [External], DD Flags: [Init, More, Master]</FONT></SPAN></P>
<P DIR=LTR><SPAN LANG="en-us"><FONT SIZE=2 FACE="Arial">20:56:36.077808 IP (tos 0xc0, ttl 64, id 47644, offset 0, flags [none], proto ICMP (1), length 80) 192.168.2.1 > 192.168.2.3: ICMP time exceeded in-transit, length 60</FONT></SPAN></P>
<P DIR=LTR><SPAN LANG="en-us"><FONT SIZE=2 FACE="Arial"> IP (tos 0xc0, ttl 1, id 64763, offset 0, flags [none], proto OSPF (89), length 52) 192.168.2.3 > 192.168.2.2: OSPFv2, Database Description, length: 32</FONT></SPAN></P>
<P DIR=LTR><SPAN LANG="en-us"><FONT SIZE=2 FACE="Arial"> Router-ID: 192.168.2.3, Backbone Area, Authentication Type: none (0)</FONT></SPAN></P>
<P DIR=LTR><SPAN LANG="en-us"><FONT SIZE=2 FACE="Arial"> Options: [External], DD Flags: [Init, More, Master]</FONT></SPAN><SPAN LANG="en-us"></SPAN><SPAN LANG="en-us"></SPAN></P>
<P DIR=LTR><SPAN LANG="en-us"></SPAN><SPAN LANG="en-us"><FONT SIZE=2 FACE="Arial">Any insights on how can</FONT></SPAN><SPAN LANG="en-us"></SPAN><SPAN LANG="en-us"> <FONT SIZE=2 FACE="Arial">I</FONT></SPAN><SPAN LANG="en-us"></SPAN><SPAN LANG="en-us"><FONT SIZE=2 FACE="Arial"> fix this matter would be much appreciated.</FONT></SPAN></P>
<P DIR=LTR><SPAN LANG="en-us"><FONT SIZE=2 FACE="Arial">Cheers,</FONT></SPAN></P>
<P DIR=LTR><SPAN LANG="en-us"></SPAN><SPAN LANG="en-us"><FONT SIZE=2 FACE="Arial">Francisco</FONT></SPAN><SPAN LANG="en-us"></SPAN><SPAN LANG="en-us"></SPAN></P>
<P DIR=LTR><SPAN LANG="en-us"></SPAN><SPAN LANG="en-us"></SPAN><SPAN LANG="en-gb"></SPAN><A NAME=""><SPAN LANG="en-gb"><FONT SIZE=2 FACE="Courier New">-------------------------</FONT></SPAN></A><SPAN LANG="en-us"></SPAN><SPAN LANG="en-gb"></SPAN></P>
<P DIR=LTR><SPAN LANG="en-us"></SPAN><SPAN LANG="en-us"></SPAN><SPAN LANG="en-gb"><FONT SIZE=2 FACE="Courier New">Francisco Rodríguez</FONT></SPAN><SPAN LANG="en-us"></SPAN><SPAN LANG="en-gb"></SPAN></P>
<P DIR=LTR><SPAN LANG="en-us"></SPAN><SPAN LANG="en-us"></SPAN><SPAN LANG="en-gb"><FONT SIZE=2 FACE="Courier New">Computing Department</FONT></SPAN><SPAN LANG="en-us"></SPAN><SPAN LANG="en-gb"></SPAN></P>
<P DIR=LTR><SPAN LANG="en-us"></SPAN><SPAN LANG="en-us"></SPAN><SPAN LANG="en-gb"><FONT SIZE=2 FACE="Courier New">InfoLab 21</FONT></SPAN><SPAN LANG="en-us"></SPAN><SPAN LANG="en-gb"></SPAN></P>
<P DIR=LTR><SPAN LANG="en-us"></SPAN><SPAN LANG="en-us"></SPAN><SPAN LANG="en-gb"><FONT SIZE=2 FACE="Courier New">South Drive</FONT></SPAN><SPAN LANG="en-us"></SPAN><SPAN LANG="en-gb"></SPAN></P>
<P DIR=LTR><SPAN LANG="en-us"></SPAN><SPAN LANG="en-us"></SPAN><SPAN LANG="en-gb"><FONT SIZE=2 FACE="Courier New">Lancaster University</FONT></SPAN><SPAN LANG="en-us"></SPAN><SPAN LANG="en-gb"></SPAN></P>
<P DIR=LTR><SPAN LANG="en-us"></SPAN><SPAN LANG="en-us"></SPAN><SPAN LANG="en-gb"><FONT SIZE=2 FACE="Courier New">Lancaster LA1 4WA, UK</FONT></SPAN><SPAN LANG="en-us"></SPAN><SPAN LANG="en-gb"></SPAN></P>
<P DIR=LTR><SPAN LANG="en-us"></SPAN><SPAN LANG="en-us"></SPAN><SPAN LANG="en-gb"><FONT SIZE=2 FACE="Courier New">-------------------------</FONT></SPAN><SPAN LANG="en-us"></SPAN></P>
</BODY>
</HTML>