OSPF Fast Convergence Tools – Event Processing

OSPF Event Processing is the third post about OSPF fast convergence tool, earlier posts have already covered OSPF Event Detection and OSPF Event Propagation.

OSPF event processing is all about how to throttle SPF calculations and increase the OSPF convergence time. Event processing is having three different tools as below listed:-
• OSPF SPF Calculations
• OSPF SPF Throttling
• OSPF Incremental SPF

OSPF SPF Calculations:- OSPF full calculations are only triggered by LSA1 and LSA2 where as partial SPF is triggered by LSA 3, LSA 4, LSA 5 and LSA 7.

OSPF SPF Throttling:- OSPF Event propagation deals with the LSA throttling whereas OSPF Event processing deals with SPF throttling. SPF and iSPF(increment SPF) cab be rate limited to delay calculations and save lot of network resources during when the network is not stable. We can throttle only full SPF and iSPF not the partial SPF.


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