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Management (mr2) failover on 2 chassis within 5 minutes

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TitleManagement (mr2) failover on 2 chassis within 5 minutes
Symptoms
  • Two chassis both with 2x mr2 management modules performed a failover of the management module within roughly 5 minutes.
  • Stack trace can be seen:
    EXCEPTION 1100, DTLB Load 
    Task : ospf
    Possible Stack Trace (function call return address list)
    2109fff4: install_new_external_path_based_on_cost(pc)
    2109f63c: calculate_routes_to_a_single_external_destination(lr)
    2109f63c: calculate_routes_to_a_single_external_destination
    2108787c: calculate_external_route_include_e_processing_lsa
    21087a6c: update_routing_table_due_to_receipt_of_a_new_external_link_advertisement
    21072bd4: install_a_new_advertisement_in_the_link_state_database
    2109bc58: process_more_recent_link_state_advertisement
    2109b594: process_link_state_advertisement
    2109a948: process_all_advertisements_in_the_link_state_update_packet
    2109a74c: ospf_ls_update_packet_received
    21089d88: process_specific_packet_type
    21088cc8: ospf_router_receive_packet
    21057a88: ospf_msg_q_not_empty_callback
    20b5582c: itc_process_msgs_internal
    20b55cd8: itc_process_msgs
    21056b98: ospf_task
    00005e18: sys_end_task
Environment
  • NetIron OS
  • MLX/MLXe Series
  • XMR Series
Cause
Known DEFECT000603095 - Device unexpectedly reloads.
Resolution
Recommend upgrade to either 5.9.00c, 6.100a or 6.200c for resolution.
Workaround: enable rfc1583 on the ABR.
Additional notes
Note: OSPF will need to be restarted if workaround is used, message will pop-up.

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