Routing Order of Operations
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The original information was taken from Cisco article on . However, this order helps understand other features, like WCCP.
If IPSec then check input access list
decryption – for CET (Cisco Encryption Technology) or IPSec
check input access list
check URPF (Unicast Reverse Path Forwarding)
check input rate limits
input accounting – update stats
redirect to web cache
If configured with ip nat outside: NAT outside to inside (global to local translation)
policy routing
routing
If configured with ip nat outside: NAT inside to outside (local to global translation)
crypto (check map and mark for encryption)
check output access list
inspect (Context-based Access Control (CBAC))
TCP intercept
encryption
Queueing