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Data flow from higher cost link in respect to directly connected link under OSPF while both links are up

Publication Date:  2012-07-27 Views:  86 Downloads:  0
Issue Description
Traffic flow from higher cost physical link in Comprising  to directly connected Physical link while both physical links are up & both  link originate from same NE 'C'& go to same destination NE'A' via one direct (c--->A)connected link & other via different path (C--->D--->G---->A)which has higher cost under ospf routing protocol.Topology is attached
All interconnected NEs are NE40E
Version: V600R001C00SPC800+SPC009.
Alarm Information
Handling Process
After configuration OSPF cost on directly connect linterface  on NE'C' issue resolved & traffic flow from directly connected & low cost path.
Root Cause
1. After checking the traffic pattern on both physical interface on NE found that the higher cost link taking the traffic but directly connected link, has no traffic.
2. Check the ospf configuration parameter & found that there is no ospf cost is define on directly connected interface thats why traffic follow the higher cost path.
Suggestion:On such situation always check ospf parameter configuration like cost & bandwidth etc.