Hello!

ip nat pool INAT-3 x.x.x.202 x.x.x.203 netmask 255.255.255.252
ip nat inside source list INAT3 pool INAT-3 vrf INET-3 overload

all works correctly, after some time, some users from access-list INAT3 can't go thought NAT.

clear ip nat trans * - helps. Can any one help me to resolve this problem.

p.s. sh ip nat tr and sh ip nat st and sh process cpu - shows small load