How to debug this ping response ???

i got such a ping response at one site.. and i m getting low success rate as i increase number of ping packets that is for 300 it is 98% and for 400 it is 97% so wht could be the reson????

BOBL_CUDDALORE#sh int s0/0 Serial0/0 is up, line protocol is up Hardware is PowerQUICC Serial Description: ** 64K leased Line to Bangalore CDC ** Internet address is Backup interface BRI1/0, failure delay 10 sec, secondary disable delay 180 sec , kickin load not set, kickout load not set MTU 1500 bytes, BW 64 Kbit, DLY 20000 usec, reliability 255/255, txload 7/255, rxload 7/255 Encapsulation HDLC, loopback not set Keepalive set (10 sec) Last input 00:00:00, output 00:00:00, output hang never Last clearing of "show interface" counters 00:16:46 Input queue: 0/75/0/0 (size/max/drops/flushes); Total output drops: 0 Queueing strategy: weighted fair Output queue: 0/1000/64/0 (size/max total/threshold/drops) Conversations 0/8/256 (active/max active/max total) Reserved Conversations 0/0 (allocated/max allocated) Available Bandwidth 48 kilobits/sec 5 minute input rate 2000 bits/sec, 4 packets/sec 5 minute output rate 2000 bits/sec, 3 packets/sec 1527 packets input, 136585 bytes, 0 no buffer Received 101 broadcasts, 0 runts, 0 giants, 0 throttles 4 input errors, 0 CRC, 3 frame, 0 overrun, 0 ignored, 1 abort 1693 packets output, 137632 bytes, 0 underruns 0 output errors, 0 collisions, 0 interface resets 0 output buffer failures, 0 output buffers swapped out 0 carrier transitions DCD=up DSR=up DTR=up RTS=up CTS=up


Type escape sequence to abort. Sending 5, 100-byte ICMP Echos to, timeout is 2 seconds: !!!!! Success rate is 100 percent (5/5), round-trip min/avg/max = 48/53/72 ms BOBL_CUDDALORE#p Protocol [ip]: Target IP address: Repeat count [5]: 400 Datagram size [100]: Timeout in seconds [2]: Extended commands [n]: Sweep range of sizes [n]: Type escape sequence to abort. Sending 400, 100-byte ICMP Echos to, timeout is 2 seconds: !!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!! !!!!!!.!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!.!!!!!!!!!!!!!!!!!!!!!!! !!!!!!!!!!!!!!.!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!.!!!!!!!!!!!!!!!! !!!!!!!!!!!!!!!!!!!!!!.!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!.!!!!!!!!! !!!!!!!!!!!!!!!!!!!!!!!!!!!!!.!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!.! !!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!.!!!!!!!!!!!! Success rate is 97 percent (391/400), round-trip min/avg/max = 48/50/68 ms BOBL_CUDDALORE#

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I've seen these patterned type pings before and they've always been layer 2 type mismatches. You could ping with different patterns (0x000, 0x5555, etc...) and see which ones go thru.

A quick look at patterns:

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Thank you for your response.. i dont know much about patterned type pings.. but i will check that..

BTW Thanks for that..


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