Ad-hoc network can be defined as a collection of number of mobile nodes which makes a temporarynetwork. Black hole can be defined as a malicious node which on any request of route replies in an incorrect manner as if it has new route to the goal and then it drops all incoming packets. Loss will be very high if malicious nodes work collectively. This attack can be defined as cooperative black hole attack.
This paper gives the analysis of Black Hole ADOV performance by frequently changing number of mobile nodes and by also changing black hole nodes. To analyze this various performance metrics are used which includes average end to end delay, loss of packet and packet delivery ratio and It has been seen that effect on end to end delay is higher that on loss of packet.