This read-only value reports the ABR rate increase factor (RIF) for this SVC, the parameter that controls how aggressively the source ramps its cell rate upward in response to positive RM-cell feedback (i.e., when the network signals available headroom). A larger RIF means the connection climbs back toward peak rate faster after congestion clears, at the risk of overshooting and re-triggering congestion; a smaller RIF means slower, more conservative recovery. An engineer noticing that throughput on an ABR SVC recovers very slowly after a congestion event might check cktAbrRIF to see if it was negotiated to an unexpectedly conservative (small) value.