Layer 3 Routing Commands 1529exponential backoff timing for retransmissions, there is a higher probabilitythat the cache entry is removed resulting in the disruption of the existingtraffic.Another significant benefit of delayed neighbor solicitation retransmission ishigher robustness against transient failures, such as spanning tree re-convergence and other layer 2 issues that can take many seconds to resolve.The exponential back-off calculation isnext retransmission timer =(BACKOFF_MULTIPLE^solicit_attempt_num) *$RETRANS_TIMER +jittered value.The exponential backoff algorithm complies with draft-ietf-6man-impatient-nud-02.Increase this value when large numbers of neighbors are present or whenneighbors are not being discovered due to network events like spanning-treere-convergence.Command HistoryIntroduced in version 6.2.0.1 firmware.Exampleconsole (config)#ipv6 nd nud retry 5ipv6 nd other-config-flagUse the ipv6 nd other-config-flag command in Interface Configuration modeto set the “other stateful configuration” flag in router advertisements sentfrom the interface.Syntaxipv6 nd other-config-flagno ipv6 nd other-config-flagDefault ConfigurationFalse is the default configuration.
