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<P class=MsoNormal style="MARGIN: 0cm 0cm 0pt"><SPAN lang=EN-US style="FONT-SIZE: 9pt; FONT-FAMILY: Arial; mso-bidi-font-size: 10.0pt">Hi all,<?xml:namespace prefix = o ns = "urn:schemas-microsoft-com:office:office" /><o:p></o:p></SPAN></P>
<P class=MsoNormal style="MARGIN: 0cm 0cm 0pt"><SPAN lang=EN-US style="FONT-SIZE: 9pt; FONT-FAMILY: Arial; mso-bidi-font-size: 10.0pt"><o:p> </o:p></SPAN></P>
<P class=MsoNormal style="MARGIN: 0cm 0cm 0pt"><SPAN lang=EN-US style="FONT-SIZE: 9pt; FONT-FAMILY: Arial; mso-bidi-font-size: 10.0pt">Recently I have been working on combining OLSR and Mobile IPv6 (MIPL) together. <SPAN style="mso-spacerun: yes"> </SPAN>But I encountered some strange problems. Please help me if you have ANY idea about what is happening to my setup or possible reason. I really appreciate your help.<o:p></o:p></SPAN></P>
<P class=MsoNormal style="MARGIN: 0cm 0cm 0pt"><SPAN lang=EN-US style="FONT-SIZE: 9pt; FONT-FAMILY: Arial; mso-bidi-font-size: 10.0pt"><o:p> </o:p></SPAN></P>
<P class=MsoNormal style="MARGIN: 0cm 0cm 0pt"><SPAN lang=EN-US style="FONT-SIZE: 9pt; FONT-FAMILY: Arial; mso-bidi-font-size: 10.0pt">Here is my setup. I got 3 laptops (nodes) A, B and C. In normal situation, it should work like this.<o:p></o:p></SPAN></P>
<P class=MsoNormal style="MARGIN: 0cm 0cm 0pt"><SPAN lang=EN-US style="FONT-SIZE: 9pt; FONT-FAMILY: Arial; mso-bidi-font-size: 10.0pt"><o:p> </o:p></SPAN></P>
<P class=MsoNormal style="MARGIN: 0cm 0cm 0pt 18pt; TEXT-INDENT: -18pt; mso-list: l1 level1 lfo1; tab-stops: list 18.0pt"><SPAN lang=EN-US style="FONT-SIZE: 9pt; FONT-FAMILY: Arial; mso-bidi-font-size: 10.0pt; mso-fareast-font-family: Arial"><SPAN style="mso-list: Ignore">1.<SPAN style="FONT: 7pt 'Times New Roman'"> </SPAN></SPAN></SPAN><SPAN lang=EN-US style="FONT-SIZE: 9pt; FONT-FAMILY: Arial; mso-bidi-font-size: 10.0pt">Initially, they are configured to run in Ad hoc mode, IPv6 only. They can ping each other.<o:p></o:p></SPAN></P>
<P class=MsoNormal style="MARGIN: 0cm 0cm 0pt 18pt; TEXT-INDENT: -18pt; mso-list: l1 level1 lfo1; tab-stops: list 18.0pt"><SPAN lang=EN-US style="FONT-SIZE: 9pt; FONT-FAMILY: Arial; mso-bidi-font-size: 10.0pt; mso-fareast-font-family: Arial"><SPAN style="mso-list: Ignore">2.<SPAN style="FONT: 7pt 'Times New Roman'"> </SPAN></SPAN></SPAN><SPAN lang=EN-US style="FONT-SIZE: 9pt; FONT-FAMILY: Arial; mso-bidi-font-size: 10.0pt">I started the OLSR, on the terminal of each node I can see the two other neighbors.<o:p></o:p></SPAN></P>
<P class=MsoNormal style="MARGIN: 0cm 0cm 0pt 18pt; TEXT-INDENT: -18pt; mso-list: l1 level1 lfo1; tab-stops: list 18.0pt"><SPAN lang=EN-US style="FONT-SIZE: 9pt; FONT-FAMILY: Arial; mso-bidi-font-size: 10.0pt; mso-fareast-font-family: Arial"><SPAN style="mso-list: Ignore">3.<SPAN style="FONT: 7pt 'Times New Roman'"> </SPAN></SPAN></SPAN><SPAN lang=EN-US style="FONT-SIZE: 9pt; FONT-FAMILY: Arial; mso-bidi-font-size: 10.0pt">Then on node C, I use iptables to block the packet from A by using matching A¡¯s MAC address. <SPAN style="mso-spacerun: yes"> </SPAN>Then B will relay the packets for A to C and hence, the new route entry is added to the routing table of A so that next hop for routing to C is B.<o:p></o:p></SPAN></P>
<P class=MsoNormal style="MARGIN: 0cm 0cm 0pt 18pt; TEXT-INDENT: -18pt; mso-list: l1 level1 lfo1; tab-stops: list 18.0pt"><SPAN lang=EN-US style="FONT-SIZE: 9pt; FONT-FAMILY: Arial; mso-bidi-font-size: 10.0pt; mso-fareast-font-family: Arial"><SPAN style="mso-list: Ignore">4.<SPAN style="FONT: 7pt 'Times New Roman'"> </SPAN></SPAN></SPAN><SPAN lang=EN-US style="FONT-SIZE: 9pt; FONT-FAMILY: Arial; mso-bidi-font-size: 10.0pt">Then if I resume the link by removing the iptables rule on C, the link should switch back to direct link after a while.<o:p></o:p></SPAN></P>
<P class=MsoNormal style="MARGIN: 0cm 0cm 0pt"><SPAN lang=EN-US style="FONT-SIZE: 9pt; FONT-FAMILY: Arial; mso-bidi-font-size: 10.0pt"><o:p> </o:p></SPAN></P>
<P class=MsoNormal style="MARGIN: 0cm 0cm 0pt"><SPAN lang=EN-US style="FONT-SIZE: 9pt; FONT-FAMILY: Arial; mso-bidi-font-size: 10.0pt">I got my setup working as described above with Ubuntu kernel <?xml:namespace prefix = st1 ns = "urn:schemas-microsoft-com:office:smarttags" /><st1:chsdate w:st="on" IsROCDate="False" IsLunarDate="False" Day="30" Month="12" Year="1899">2.6.10</st1:chsdate>. But after I moved to Mobile IPv6, problems came out.<o:p></o:p></SPAN></P>
<P class=MsoNormal style="MARGIN: 0cm 0cm 0pt"><SPAN lang=EN-US style="FONT-SIZE: 9pt; FONT-FAMILY: Arial; mso-bidi-font-size: 10.0pt"><o:p> </o:p></SPAN></P>
<P class=MsoNormal style="MARGIN: 0cm 0cm 0pt 18pt; TEXT-INDENT: -18pt; mso-list: l0 level1 lfo2; tab-stops: list 18.0pt"><SPAN lang=EN-US style="FONT-SIZE: 9pt; FONT-FAMILY: Arial; mso-bidi-font-size: 10.0pt; mso-fareast-font-family: Arial"><SPAN style="mso-list: Ignore">1.<SPAN style="FONT: 7pt 'Times New Roman'"> </SPAN></SPAN></SPAN><SPAN lang=EN-US style="FONT-SIZE: 9pt; FONT-FAMILY: Arial; mso-bidi-font-size: 10.0pt">Since the MIPL requires a kernel patch and the only available patch is for kernel <st1:chsdate w:st="on" IsROCDate="False" IsLunarDate="False" Day="30" Month="12" Year="1899">2.6.8</st1:chsdate>.1, so I have to fall back to the old kernel. <o:p></o:p></SPAN></P>
<P class=MsoNormal style="MARGIN: 0cm 0cm 0pt 18pt; TEXT-INDENT: -18pt; mso-list: l0 level1 lfo2; tab-stops: list 18.0pt"><SPAN lang=EN-US style="FONT-SIZE: 9pt; FONT-FAMILY: Arial; mso-bidi-font-size: 10.0pt; mso-fareast-font-family: Arial"><SPAN style="mso-list: Ignore">2.<SPAN style="FONT: 7pt 'Times New Roman'"> </SPAN></SPAN></SPAN><SPAN lang=EN-US style="FONT-SIZE: 9pt; FONT-FAMILY: Arial; mso-bidi-font-size: 10.0pt">I downloaded Ubuntu kernel source <st1:chsdate w:st="on" IsROCDate="False" IsLunarDate="False" Day="30" Month="12" Year="1899">2.6.8</st1:chsdate>.1 from the apt repository and applied patch. Compile and Reboot.<o:p></o:p></SPAN></P>
<P class=MsoNormal style="MARGIN: 0cm 0cm 0pt 18pt; TEXT-INDENT: -18pt; mso-list: l0 level1 lfo2; tab-stops: list 18.0pt"><SPAN lang=EN-US style="FONT-SIZE: 9pt; FONT-FAMILY: Arial; mso-bidi-font-size: 10.0pt; mso-fareast-font-family: Arial"><SPAN style="mso-list: Ignore">3.<SPAN style="FONT: 7pt 'Times New Roman'"> </SPAN></SPAN></SPAN><SPAN lang=EN-US style="FONT-SIZE: 9pt; FONT-FAMILY: Arial; mso-bidi-font-size: 10.0pt">Everything seems working fine until I run OLSR. After I run OLSR, on each terminal, I can only see one neighbor. But if I launch the olsr-gui provided in the package, all neighbors are shown.<o:p></o:p></SPAN></P>
<P class=MsoNormal style="MARGIN: 0cm 0cm 0pt 18pt; TEXT-INDENT: -18pt; mso-list: l0 level1 lfo2; tab-stops: list 18.0pt"><SPAN lang=EN-US style="FONT-SIZE: 9pt; FONT-FAMILY: Arial; mso-bidi-font-size: 10.0pt; mso-fareast-font-family: Arial"><SPAN style="mso-list: Ignore">4.<SPAN style="FONT: 7pt 'Times New Roman'"> </SPAN></SPAN></SPAN><SPAN lang=EN-US style="FONT-SIZE: 9pt; FONT-FAMILY: Arial; mso-bidi-font-size: 10.0pt">Then I break the link between A and C again using iptables, but this time the new route is never setup. On node A, the routing table is not updated to show an entry that C is via B. And I cannot ping from A to C. On B and C I can only sniff some neighbor solicitation packets.<o:p></o:p></SPAN></P>
<P class=MsoNormal style="MARGIN: 0cm 0cm 0pt 18pt; TEXT-INDENT: -18pt; mso-list: l0 level1 lfo2; tab-stops: list 18.0pt"><SPAN lang=EN-US style="FONT-SIZE: 9pt; FONT-FAMILY: Arial; mso-bidi-font-size: 10.0pt; mso-fareast-font-family: Arial"><SPAN style="mso-list: Ignore">5.<SPAN style="FONT: 7pt 'Times New Roman'"> </SPAN></SPAN></SPAN><SPAN lang=EN-US style="FONT-SIZE: 9pt; FONT-FAMILY: Arial; mso-bidi-font-size: 10.0pt">If I let A and B running OLSR, and restart the OLSR program on C a few times, the neighbor displayed on the terminal of C is random, either A or B, but only one of them. <o:p></o:p></SPAN></P>
<P class=MsoNormal style="MARGIN: 0cm 0cm 0pt 18pt; TEXT-INDENT: -18pt; mso-list: l0 level1 lfo2; tab-stops: list 18.0pt"><SPAN lang=EN-US style="FONT-SIZE: 9pt; FONT-FAMILY: Arial; mso-bidi-font-size: 10.0pt; mso-fareast-font-family: Arial"><SPAN style="mso-list: Ignore">6.<SPAN style="FONT: 7pt 'Times New Roman'"> </SPAN></SPAN></SPAN><SPAN lang=EN-US style="FONT-SIZE: 9pt; FONT-FAMILY: Arial; mso-bidi-font-size: 10.0pt">I also try to sniff the HELLO packets sent between nodes; I found that for each node, it can receive the HELLO messages from the other two nodes. <o:p></o:p></SPAN></P>
<P class=MsoNormal style="MARGIN: 0cm 0cm 0pt"><SPAN lang=EN-US style="FONT-SIZE: 9pt; FONT-FAMILY: Arial; mso-bidi-font-size: 10.0pt"><o:p> </o:p></SPAN></P>
<P class=MsoNormal style="MARGIN: 0cm 0cm 0pt"><SPAN lang=EN-US style="FONT-SIZE: 9pt; FONT-FAMILY: Arial; mso-bidi-font-size: 10.0pt">So now the big problem is why OLSR is not displaying all the neighbors in the terminal but show the full list in the GUI? Why the OLSR is not updating the routing table? Is there any kernel requirement for OLSR daemon since it stops working after change kernel? Anyone is also trying MIPL with OLSR? Any advice on how to troubleshoot? Any suggestion is appreciated!!! Thank you. I am now so desperate¡ :(<o:p></o:p></SPAN></P>
<P class=MsoNormal style="MARGIN: 0cm 0cm 0pt"><SPAN lang=EN-US style="FONT-SIZE: 9pt; FONT-FAMILY: Arial; mso-bidi-font-size: 10.0pt"><o:p> </o:p></SPAN></P>
<P class=MsoNormal style="MARGIN: 0cm 0cm 0pt"><SPAN lang=EN-US style="FONT-SIZE: 9pt; FONT-FAMILY: Arial; mso-bidi-font-size: 10.0pt">Regards,<o:p></o:p></SPAN></P>
<P class=MsoNormal style="MARGIN: 0cm 0cm 0pt"><SPAN lang=EN-US style="FONT-SIZE: 9pt; FONT-FAMILY: Arial; mso-bidi-font-size: 10.0pt"><o:p> </o:p></SPAN></P>
<P class=MsoNormal style="MARGIN: 0cm 0cm 0pt"><SPAN lang=EN-US style="FONT-SIZE: 9pt; FONT-FAMILY: Arial; mso-bidi-font-size: 10.0pt">Xia Yang</SPAN><SPAN lang=EN-US style="FONT-SIZE: 9pt; FONT-FAMILY: Arial; mso-bidi-font-size: 10.0pt"><o:p> </o:p></SPAN></P></DIV>