I am back with new experience. in my LAN environment i have more the 50 different Cisco switches which includes Catalyst 2950, 3500, 3560, 3700. here i am facing issue while making trunk between any 2950 switch and 3500 switch. link become trunk, but the communication of these switches become very slow or we can say delay increases upto 3000 ms. but trunk amoung 3500 series remain stable after trunking. it happend only with 2950 switch and 3500 switch. is this any IOS bug or compatibility issue. can i resolve this issue by trying correct IOS ver?(if it is not correct).....currently i am using ver for 2950 "12.1(22)EA10" and for 3500 "12.0(5)WC3b"....even i check different versions too but the result is the same.......!!!!
I will wait for experts views