I want to know what kind of problem in TTL???
please share with me...
Can you be more specific? There are no problems with TTL per se The TTL is simply a number that limits the maximum number of hops a packet can travel, and, being a 1B quantity, its maximum value is 255 which is the maximum limit on the diameter of any IP network. The TTL prevents a packet from circling in a routing loop endlessly which is a good thing.
Have you heard of any problems with TTL in a particular application?