This read-only value reports the maximum number of IP Fast Forwarding Table entries, hardware-accelerated forwarding cache entries, that the device supports. An administrator checks this to understand the ceiling on how many distinct forwarded flows or routes can be cached in hardware before the device must fall back to slower, software-based forwarding. For example, if traffic to many distinct destinations approaches the value in rlInetMaxFftNumber, an admin knows the FFT cache could start evicting entries and increasing forwarding latency for less-active flows.