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</o:shapelayout></xml><![endif]--></head><body lang=EN-US link="#0563C1" vlink="#954F72"><div class=WordSection1><p class=MsoNormal><span lang=NL-BE>Hi all,<o:p></o:p></span></p><p class=MsoNormal><span lang=NL-BE><o:p> </o:p></span></p><p class=MsoNormal>We are using olsrd-0.6.8 in our system. <o:p></o:p></p><p class=MsoNormal>I have a problem with the following setup:<o:p></o:p></p><p class=MsoNormal><o:p> </o:p></p><p class=MsoNormal><span lang=NL-BE>Node 8100 ------------- node 3<o:p></o:p></span></p><p class=MsoNormal><span lang=NL-BE> | X |<o:p></o:p></span></p><p class=MsoNormal><span lang=NL-BE>Node 8120 ------------- node 425<o:p></o:p></span></p><p class=MsoNormal><span lang=NL-BE><o:p> </o:p></span></p><p class=MsoNormal>Each node has a wired connection to the 3 other nodes (each node has 3 Ethernet interfaces). Olsrd is running on each node.<o:p></o:p></p><p class=MsoNormal>When I disconnect the cable between node 3 and node 8120 and after this the cable between node 8120 and node 425 => node 425 cannot reach node 8120 anymore (there is still a path via node 3 and node 8100) => the routing table on node 425 is not updated.<o:p></o:p></p><p class=MsoNormal><o:p> </o:p></p><p class=MsoNormal>Remark: when there is no physical Ethernet connection our systems disables the eth interface (ethx)<o:p></o:p></p><p class=MsoNormal><o:p> </o:p></p><p class=MsoNormal>I`ve investigated this problem and found the following problem in olsrd:<o:p></o:p></p><p class=MsoNormal><o:p> </o:p></p><p class=MsoNormal><o:p> </o:p></p><p class=MsoNormal style='margin-left:27.0pt;text-indent:-18.0pt;mso-list:l3 level1 lfo1;vertical-align:middle'><![if !supportLists]><span style='font-size:10.0pt;font-family:Symbol;color:black'><span style='mso-list:Ignore'>·<span style='font:7.0pt "Times New Roman"'> </span></span></span><![endif]>disconnect the cable between node 3 and node 8120 => <span style='color:black'>Link down between 3 and 8120 => disable interface<o:p></o:p></span></p><p class=MsoNormal style='margin-left:54.0pt;text-indent:-18.0pt;mso-list:l3 level2 lfo1;vertical-align:middle'><![if !supportLists]><span style='font-size:10.0pt;font-family:"Courier New";color:black'><span style='mso-list:Ignore'>o<span style='font:7.0pt "Times New Roman"'> </span></span></span><![endif]><span style='color:black'>Line 371 in interfaces.c: "olsr_remove_interface(struct olsr_if* iface)"<o:p></o:p></span></p><p class=MsoNormal style='margin-left:81.0pt;text-indent:-18.0pt;mso-list:l3 level3 lfo1;vertical-align:middle'><![if !supportLists]><span style='font-size:10.0pt;font-family:Symbol;color:black'><span style='mso-list:Ignore'>·<span style='font:7.0pt "Times New Roman"'> </span></span></span><![endif]><span style='color:black'>Line 379 in "interfaces.c": "olsr_delete_link_entry_by_ip(&ifp->ip_addr)"<o:p></o:p></span></p><p class=MsoNormal style='margin-left:108.0pt;text-indent:-18.0pt;mso-list:l3 level4 lfo1;vertical-align:middle'><![if !supportLists]><span style='font-size:10.0pt;font-family:Wingdings;color:black'><span style='mso-list:Ignore'>§<span style='font:7.0pt "Times New Roman"'> </span></span></span><![endif]><span style='color:black'>Line 411 in "link_set.c": "olsr_delete_link_entry(link);"<o:p></o:p></span></p><p class=MsoNormal style='margin-left:135.0pt;text-indent:-18.0pt;mso-list:l3 level5 lfo1;vertical-align:middle'><![if !supportLists]><span style='font-size:10.0pt;font-family:Symbol;color:black'><span style='mso-list:Ignore'>·<span style='font:7.0pt "Times New Roman"'> </span></span></span><![endif]><span style='color:black'>Line 375 in "olsr_delete_neighbor_table(&link->neighbor->neighbor_main_addr)";<o:p></o:p></span></p><p class=MsoNormal style='margin-left:162.0pt;text-indent:-18.0pt;mso-list:l3 level6 lfo1;vertical-align:middle'><![if !supportLists]><span style='font-size:10.0pt;font-family:Symbol;color:black'><span style='mso-list:Ignore'>·<span style='font:7.0pt "Times New Roman"'> </span></span></span><![endif]><span style='color:black'>This function will delete the neighbor from the neighbor table<o:p></o:p></span></p><p class=MsoNormal style='margin-left:162.0pt;text-indent:-18.0pt;mso-list:l3 level6 lfo1;vertical-align:middle'><![if !supportLists]><span style='font-size:10.0pt;font-family:Symbol;color:black'><span style='mso-list:Ignore'>·<span style='font:7.0pt "Times New Roman"'> </span></span></span><![endif]><span style='color:black'>(Line 177 in neighbor_table.c)<o:p></o:p></span></p><p class=MsoNormal style='margin-left:162.0pt;text-indent:-18.0pt;mso-list:l3 level6 lfo1;vertical-align:middle'><![if !supportLists]><span style='font-size:10.0pt;font-family:Symbol;color:black'><span style='mso-list:Ignore'>·<span style='font:7.0pt "Times New Roman"'> </span></span></span><![endif]><span style='color:black'>This function sets "changes_neighborhood = true;" (Line 219 in neighbor_table.c)<o:p></o:p></span></p><p class=MsoNormal style='margin-left:189.0pt'><span style='color:black'> <o:p></o:p></span></p><p class=MsoNormal style='margin-left:54.0pt;text-indent:-18.0pt;mso-list:l0 level1 lfo2;vertical-align:middle'><![if !supportLists]><span style='font-size:10.0pt;font-family:"Courier New";color:black'><span style='mso-list:Ignore'>o<span style='font:7.0pt "Times New Roman"'> </span></span></span><![endif]><span style='color:black'>In "olsr_scheduler(void)" (line 486 in scheduler.c) <o:p></o:p></span></p><p class=MsoNormal style='margin-left:81.0pt;text-indent:-18.0pt;mso-list:l0 level2 lfo2;vertical-align:middle'><![if !supportLists]><span style='font-size:10.0pt;font-family:Symbol;color:black'><span style='mso-list:Ignore'>·<span style='font:7.0pt "Times New Roman"'> </span></span></span><![endif]><span style='color:black'>function "olsr_process_changes()" (line 180 in olsr.c)<o:p></o:p></span></p><p class=MsoNormal style='margin-left:81.0pt;text-indent:-18.0pt;mso-list:l0 level2 lfo2;vertical-align:middle'><![if !supportLists]><span style='font-size:10.0pt;font-family:Symbol;color:black'><span style='mso-list:Ignore'>·<span style='font:7.0pt "Times New Roman"'> </span></span></span><![endif]><span style='color:black'>Because "changes_neighborhood == TRUE and olsr_cnf->lq_level > 1" "olsr_calculate_lq_mpr() "is called<o:p></o:p></span></p><p class=MsoNormal style='margin-left:81.0pt;text-indent:-18.0pt;mso-list:l0 level2 lfo2;vertical-align:middle'><![if !supportLists]><span style='font-size:10.0pt;font-family:Symbol;color:black'><span style='mso-list:Ignore'>·<span style='font:7.0pt "Times New Roman"'> </span></span></span><![endif]><span style='color:black'>In "olsr_calculate_lq_mpr()" (line 51 in lq_mpr.c) a new mpr is calculated (8100 will now be mpr for 8120) and the function "signal_link_changes(true);" is called => link_changes == true<o:p></o:p></span></p><p class=MsoNormal style='margin-left:81.0pt;text-indent:-18.0pt;mso-list:l0 level2 lfo2;vertical-align:middle'><![if !supportLists]><span style='font-size:10.0pt;font-family:Symbol;color:black'><span style='mso-list:Ignore'>·<span style='font:7.0pt "Times New Roman"'> </span></span></span><![endif]><span style='color:black'>In the next step ANSN is increased <o:p></o:p></span></p><p class=MsoNormal style='margin-left:54.0pt;text-indent:-18.0pt;mso-list:l0 level1 lfo2;vertical-align:middle'><![if !supportLists]><span style='font-size:10.0pt;font-family:"Courier New";color:black'><span style='mso-list:Ignore'>o<span style='font:7.0pt "Times New Roman"'> </span></span></span><![endif]><span style='color:black'>At the tc_interval a tc message is generated with this ANSN in => the neighbors see a change in the ANSN number(when the packet are received) an will update their tables<o:p></o:p></span></p><p class=MsoNormal style='margin-left:54.0pt'><span style='color:black'> <o:p></o:p></span></p><p class=MsoNormal style='margin-left:27.0pt;text-indent:-18.0pt;mso-list:l2 level1 lfo3;vertical-align:middle'><![if !supportLists]><span style='font-size:10.0pt;font-family:Symbol;color:black'><span style='mso-list:Ignore'>·<span style='font:7.0pt "Times New Roman"'> </span></span></span><![endif]><span style='color:black'>Link Down between node 8120 and 425<o:p></o:p></span></p><p class=MsoNormal style='margin-left:54.0pt;text-indent:-18.0pt;mso-list:l2 level2 lfo3;vertical-align:middle'><![if !supportLists]><span style='font-size:10.0pt;font-family:"Courier New";color:black'><span style='mso-list:Ignore'>o<span style='font:7.0pt "Times New Roman"'> </span></span></span><![endif]><span style='color:black'>Line 371 in interfaces.c: "olsr_remove_interface(struct olsr_if* iface)"<o:p></o:p></span></p><p class=MsoNormal style='margin-left:81.0pt;text-indent:-18.0pt;mso-list:l2 level3 lfo3;vertical-align:middle'><![if !supportLists]><span style='font-size:10.0pt;font-family:Symbol;color:black'><span style='mso-list:Ignore'>·<span style='font:7.0pt "Times New Roman"'> </span></span></span><![endif]><span style='color:black'>Line 379 in "interfaces.c": "olsr_delete_link_entry_by_ip(&ifp->ip_addr)"<o:p></o:p></span></p><p class=MsoNormal style='margin-left:108.0pt;text-indent:-18.0pt;mso-list:l2 level4 lfo3;vertical-align:middle'><![if !supportLists]><span style='font-size:10.0pt;font-family:Wingdings;color:black'><span style='mso-list:Ignore'>§<span style='font:7.0pt "Times New Roman"'> </span></span></span><![endif]><span style='color:black'>Line 411 in "link_set.c": "olsr_delete_link_entry(link);"<o:p></o:p></span></p><p class=MsoNormal style='margin-left:135.0pt;text-indent:-18.0pt;mso-list:l2 level5 lfo3;vertical-align:middle'><![if !supportLists]><span style='font-size:10.0pt;font-family:Symbol;color:black'><span style='mso-list:Ignore'>·<span style='font:7.0pt "Times New Roman"'> </span></span></span><![endif]><span style='color:black'>Line 375 in "olsr_delete_neighbor_table(&link->neighbor->neighbor_main_addr)";<o:p></o:p></span></p><p class=MsoNormal style='margin-left:162.0pt;text-indent:-18.0pt;mso-list:l2 level6 lfo3;vertical-align:middle'><![if !supportLists]><span style='font-size:10.0pt;font-family:Symbol;color:black'><span style='mso-list:Ignore'>·<span style='font:7.0pt "Times New Roman"'> </span></span></span><![endif]><span style='color:black'>This function will delete the neighbor from the neighbor table<o:p></o:p></span></p><p class=MsoNormal style='margin-left:162.0pt;text-indent:-18.0pt;mso-list:l2 level6 lfo3;vertical-align:middle'><![if !supportLists]><span style='font-size:10.0pt;font-family:Symbol;color:black'><span style='mso-list:Ignore'>·<span style='font:7.0pt "Times New Roman"'> </span></span></span><![endif]><span style='color:black'>(Line 177 in neighbor_table.c)<o:p></o:p></span></p><p class=MsoNormal style='margin-left:162.0pt;text-indent:-18.0pt;mso-list:l2 level6 lfo3;vertical-align:middle'><![if !supportLists]><span style='font-size:10.0pt;font-family:Symbol;color:black'><span style='mso-list:Ignore'>·<span style='font:7.0pt "Times New Roman"'> </span></span></span><![endif]><span style='color:black'>This function sets "changes_neighborhood = true;" (Line 219 in neighbor_table.c)<o:p></o:p></span></p><p class=MsoNormal style='margin-left:54.0pt'><span style='color:black'> <o:p></o:p></span></p><p class=MsoNormal style='margin-left:54.0pt;text-indent:-18.0pt;mso-list:l4 level1 lfo4;vertical-align:middle'><![if !supportLists]><span style='font-size:10.0pt;font-family:"Courier New";color:black'><span style='mso-list:Ignore'>o<span style='font:7.0pt "Times New Roman"'> </span></span></span><![endif]><span style='color:black'>In "olsr_scheduler(void)" (line 486 in scheduler.c) <o:p></o:p></span></p><p class=MsoNormal style='margin-left:81.0pt;text-indent:-18.0pt;mso-list:l4 level2 lfo4;vertical-align:middle'><![if !supportLists]><span style='font-size:10.0pt;font-family:Symbol;color:black'><span style='mso-list:Ignore'>·<span style='font:7.0pt "Times New Roman"'> </span></span></span><![endif]><span style='color:black'>function "olsr_process_changes()" (line 180 in olsr.c)<o:p></o:p></span></p><p class=MsoNormal style='margin-left:81.0pt;text-indent:-18.0pt;mso-list:l4 level2 lfo4;vertical-align:middle'><![if !supportLists]><span style='font-size:10.0pt;font-family:Symbol;color:black'><span style='mso-list:Ignore'>·<span style='font:7.0pt "Times New Roman"'> </span></span></span><![endif]><span style='color:black'>Because "changes_neighborhood == TRUE and olsr_cnf->lq_level > 1" "olsr_calculate_lq_mpr() "is called<o:p></o:p></span></p><p class=MsoNormal style='margin-left:81.0pt;text-indent:-18.0pt;mso-list:l4 level2 lfo4;vertical-align:middle'><![if !supportLists]><span style='font-size:10.0pt;font-family:Symbol;color:black'><span style='mso-list:Ignore'>·<span style='font:7.0pt "Times New Roman"'> </span></span></span><![endif]><span style='color:black'>In "olsr_calculate_lq_mpr()" (line 51 in lq_mpr.c) no new mpr is calculated (8100 will stay mpr for 8120) and the function "signal_link_changes(true);" is not called => link_changes == false<o:p></o:p></span></p><p class=MsoNormal style='margin-left:81.0pt;text-indent:-18.0pt;mso-list:l4 level2 lfo4;vertical-align:middle'><![if !supportLists]><span style='font-size:10.0pt;font-family:Symbol;color:black'><span style='mso-list:Ignore'>·<span style='font:7.0pt "Times New Roman"'> </span></span></span><![endif]><span style='color:black'>In the next step ANSN is not increased <o:p></o:p></span></p><p class=MsoNormal style='margin-left:54.0pt;text-indent:-18.0pt;mso-list:l4 level1 lfo4;vertical-align:middle'><![if !supportLists]><span style='font-size:10.0pt;font-family:"Courier New";color:black'><span style='mso-list:Ignore'>o<span style='font:7.0pt "Times New Roman"'> </span></span></span><![endif]><span style='color:black'>At the tc_interval a tc message is generated with old ANSN in => the neighbors see no change in the ANSN number(when the packet are received) an will no update their tables<o:p></o:p></span></p><p class=MsoNormal><span style='color:black'> <o:p></o:p></span></p><p class=MsoNormal><span lang=NL-BE style='color:black'>Solution: <o:p></o:p></span></p><p class=MsoNormal style='margin-left:27.0pt;text-indent:-18.0pt;mso-list:l1 level1 lfo5;vertical-align:middle'><![if !supportLists]><span style='font-size:10.0pt;font-family:Symbol;color:black'><span style='mso-list:Ignore'>·<span style='font:7.0pt "Times New Roman"'> </span></span></span><![endif]><span style='color:black'>When a neighbor is deleted from the neighbor table (line 177 in neighbor_table: olsr_delete_neighbor_table(const union olsr_ip_addr *neighbor_addr)) also call the function signal_link_changes(true); because there is a change in the neighbor table.<o:p></o:p></span></p><p class=MsoNormal style='vertical-align:middle'><span style='color:black'>I’ve tested this and it is working correct (routing tables are updated as expected).<o:p></o:p></span></p><p class=MsoNormal style='vertical-align:middle'><span style='color:black'>Where can I post this fix, or is there a better solution? <o:p></o:p></span></p><p class=MsoNormal style='vertical-align:middle'><span style='color:black'><o:p> </o:p></span></p><p class=MsoNormal style='vertical-align:middle'><span style='color:black'>Regards,<o:p></o:p></span></p><p class=MsoNormal style='vertical-align:middle'><span style='color:black'><o:p> </o:p></span></p><p class=MsoNormal style='vertical-align:middle'><span style='color:black'>koen<o:p></o:p></span></p><p class=MsoNormal><o:p> </o:p></p><p class=MsoNormal><o:p> </o:p></p></div></body></html>