[j-nsp] Strange pings

Fri Oct 9 06:11:09 EDT 2009

Hi,

I am wondering if anyone has come across this before when pinging
destinations.

For some reason when send a ping with a size of over 1100 data bytes on the
10th ping is allways 4-5 times higher for some reason.

Dont know if its bug issue in the version of software or just an issue with
the hardware -j6350.

Has anyone come across this before.

TestBox> ping 4.2.2.2 count 45 size 1102
PING 4.2.2.2 (4.2.2.2): 1102 data bytes
1110 bytes from 4.2.2.2: icmp_seq=0 ttl=249 time=30.147 ms
1110 bytes from 4.2.2.2: icmp_seq=1 ttl=249 time=30.079 ms
1110 bytes from 4.2.2.2: icmp_seq=2 ttl=249 time=288.193 ms
1110 bytes from 4.2.2.2: icmp_seq=3 ttl=249 time=30.091 ms
1110 bytes from 4.2.2.2: icmp_seq=4 ttl=249 time=30.068 ms
1110 bytes from 4.2.2.2: icmp_seq=5 ttl=249 time=30.345 ms
1110 bytes from 4.2.2.2: icmp_seq=6 ttl=249 time=30.052 ms
1110 bytes from 4.2.2.2: icmp_seq=7 ttl=249 time=30.073 ms
1110 bytes from 4.2.2.2: icmp_seq=8 ttl=249 time=30.336 ms
1110 bytes from 4.2.2.2: icmp_seq=9 ttl=249 time=32.024 ms
1110 bytes from 4.2.2.2: icmp_seq=10 ttl=249 time=30.159 ms
1110 bytes from 4.2.2.2: icmp_seq=11 ttl=249 time=30.319 ms
1110 bytes from 4.2.2.2: icmp_seq=12 ttl=249 time=259.550 ms
1110 bytes from 4.2.2.2: icmp_seq=13 ttl=249 time=30.096 ms
1110 bytes from 4.2.2.2: icmp_seq=14 ttl=249 time=30.088 ms
1110 bytes from 4.2.2.2: icmp_seq=15 ttl=249 time=30.089 ms
1110 bytes from 4.2.2.2: icmp_seq=16 ttl=249 time=30.069 ms
1110 bytes from 4.2.2.2: icmp_seq=17 ttl=249 time=30.323 ms
1110 bytes from 4.2.2.2: icmp_seq=18 ttl=249 time=30.337 ms
1110 bytes from 4.2.2.2: icmp_seq=19 ttl=249 time=31.053 ms
1110 bytes from 4.2.2.2: icmp_seq=20 ttl=249 time=30.327 ms
1110 bytes from 4.2.2.2: icmp_seq=21 ttl=249 time=32.005 ms
1110 bytes from 4.2.2.2: icmp_seq=22 ttl=249 time=278.379 ms
1110 bytes from 4.2.2.2: icmp_seq=23 ttl=249 time=30.061 ms
1110 bytes from 4.2.2.2: icmp_seq=24 ttl=249 time=30.417 ms
1110 bytes from 4.2.2.2: icmp_seq=25 ttl=249 time=30.084 ms
1110 bytes from 4.2.2.2: icmp_seq=26 ttl=249 time=30.061 ms
1110 bytes from 4.2.2.2: icmp_seq=27 ttl=249 time=30.358 ms
1110 bytes from 4.2.2.2: icmp_seq=28 ttl=249 time=32.018 ms
1110 bytes from 4.2.2.2: icmp_seq=29 ttl=249 time=30.089 ms
1110 bytes from 4.2.2.2: icmp_seq=30 ttl=249 time=32.024 ms
1110 bytes from 4.2.2.2: icmp_seq=31 ttl=249 time=32.015 ms
1110 bytes from 4.2.2.2: icmp_seq=32 ttl=249 time=266.183 ms
1110 bytes from 4.2.2.2: icmp_seq=33 ttl=249 time=30.334 ms
1110 bytes from 4.2.2.2: icmp_seq=34 ttl=249 time=30.068 ms
1110 bytes from 4.2.2.2: icmp_seq=35 ttl=249 time=30.082 ms
1110 bytes from 4.2.2.2: icmp_seq=36 ttl=249 time=30.100 ms
1110 bytes from 4.2.2.2: icmp_seq=37 ttl=249 time=30.153 ms
1110 bytes from 4.2.2.2: icmp_seq=38 ttl=249 time=30.108 ms
1110 bytes from 4.2.2.2: icmp_seq=39 ttl=249 time=30.176 ms
1110 bytes from 4.2.2.2: icmp_seq=40 ttl=249 time=32.276 ms
1110 bytes from 4.2.2.2: icmp_seq=41 ttl=249 time=30.079 ms
1110 bytes from 4.2.2.2: icmp_seq=42 ttl=249 time=264.249 ms
1110 bytes from 4.2.2.2: icmp_seq=43 ttl=249 time=30.334 ms
1110 bytes from 4.2.2.2: icmp_seq=44 ttl=249 time=34.161 ms
--- 4.2.2.2 ping statistics ---
45 packets transmitted, 45 packets received, 0% packet loss
round-trip min/avg/max/stddev = 30.052/57.325/288.193/75.741 ms

TestBox> ping 4.2.2.2 count 45 size 1101
PING 4.2.2.2 (4.2.2.2): 1101 data bytes
1109 bytes from 4.2.2.2: icmp_seq=0 ttl=249 time=30.420 ms
1109 bytes from 4.2.2.2: icmp_seq=1 ttl=249 time=30.072 ms
1109 bytes from 4.2.2.2: icmp_seq=2 ttl=249 time=30.073 ms
1109 bytes from 4.2.2.2: icmp_seq=3 ttl=249 time=32.312 ms
1109 bytes from 4.2.2.2: icmp_seq=4 ttl=249 time=30.156 ms
1109 bytes from 4.2.2.2: icmp_seq=5 ttl=249 time=30.080 ms
1109 bytes from 4.2.2.2: icmp_seq=6 ttl=249 time=30.307 ms
1109 bytes from 4.2.2.2: icmp_seq=7 ttl=249 time=30.142 ms
1109 bytes from 4.2.2.2: icmp_seq=8 ttl=249 time=295.051 ms
1109 bytes from 4.2.2.2: icmp_seq=9 ttl=249 time=30.320 ms
1109 bytes from 4.2.2.2: icmp_seq=10 ttl=249 time=30.091 ms
1109 bytes from 4.2.2.2: icmp_seq=11 ttl=249 time=30.095 ms
1109 bytes from 4.2.2.2: icmp_seq=12 ttl=249 time=30.471 ms
1109 bytes from 4.2.2.2: icmp_seq=13 ttl=249 time=30.076 ms
1109 bytes from 4.2.2.2: icmp_seq=14 ttl=249 time=30.062 ms
1109 bytes from 4.2.2.2: icmp_seq=15 ttl=249 time=30.332 ms
1109 bytes from 4.2.2.2: icmp_seq=16 ttl=249 time=30.307 ms
1109 bytes from 4.2.2.2: icmp_seq=17 ttl=249 time=30.149 ms
1109 bytes from 4.2.2.2: icmp_seq=18 ttl=249 time=438.430 ms
1109 bytes from 4.2.2.2: icmp_seq=19 ttl=249 time=30.312 ms
1109 bytes from 4.2.2.2: icmp_seq=20 ttl=249 time=30.035 ms
1109 bytes from 4.2.2.2: icmp_seq=21 ttl=249 time=30.070 ms
1109 bytes from 4.2.2.2: icmp_seq=22 ttl=249 time=30.328 ms
1109 bytes from 4.2.2.2: icmp_seq=23 ttl=249 time=30.040 ms
1109 bytes from 4.2.2.2: icmp_seq=24 ttl=249 time=30.151 ms
1109 bytes from 4.2.2.2: icmp_seq=25 ttl=249 time=30.329 ms
1109 bytes from 4.2.2.2: icmp_seq=26 ttl=249 time=30.088 ms
1109 bytes from 4.2.2.2: icmp_seq=27 ttl=249 time=30.164 ms
1109 bytes from 4.2.2.2: icmp_seq=28 ttl=249 time=311.159 ms
1109 bytes from 4.2.2.2: icmp_seq=29 ttl=249 time=32.009 ms
1109 bytes from 4.2.2.2: icmp_seq=30 ttl=249 time=30.080 ms
1109 bytes from 4.2.2.2: icmp_seq=31 ttl=249 time=30.323 ms
1109 bytes from 4.2.2.2: icmp_seq=32 ttl=249 time=30.085 ms
1109 bytes from 4.2.2.2: icmp_seq=33 ttl=249 time=32.031 ms
1109 bytes from 4.2.2.2: icmp_seq=34 ttl=249 time=30.147 ms
1109 bytes from 4.2.2.2: icmp_seq=35 ttl=249 time=30.083 ms
1109 bytes from 4.2.2.2: icmp_seq=36 ttl=249 time=31.999 ms
1109 bytes from 4.2.2.2: icmp_seq=37 ttl=249 time=30.337 ms
1109 bytes from 4.2.2.2: icmp_seq=38 ttl=249 time=325.420 ms
1109 bytes from 4.2.2.2: icmp_seq=39 ttl=249 time=30.061 ms
1109 bytes from 4.2.2.2: icmp_seq=40 ttl=249 time=30.154 ms
1109 bytes from 4.2.2.2: icmp_seq=41 ttl=249 time=30.302 ms
1109 bytes from 4.2.2.2: icmp_seq=42 ttl=249 time=30.059 ms
1109 bytes from 4.2.2.2: icmp_seq=43 ttl=249 time=30.079 ms
1109 bytes from 4.2.2.2: icmp_seq=44 ttl=249 time=30.429 ms
--- 4.2.2.2 ping statistics ---
45 packets transmitted, 45 packets received, 0% packet loss
round-trip min/avg/max/stddev = 30.035/58.116/438.430/90.411 ms

TestBox> ping 4.2.2.2 count 45 size 1100
PING 4.2.2.2 (4.2.2.2): 1100 data bytes
1108 bytes from 4.2.2.2: icmp_seq=0 ttl=249 time=30.064 ms
1108 bytes from 4.2.2.2: icmp_seq=1 ttl=249 time=30.333 ms
1108 bytes from 4.2.2.2: icmp_seq=2 ttl=249 time=30.072 ms
1108 bytes from 4.2.2.2: icmp_seq=3 ttl=249 time=30.080 ms
1108 bytes from 4.2.2.2: icmp_seq=4 ttl=249 time=30.414 ms
1108 bytes from 4.2.2.2: icmp_seq=5 ttl=249 time=30.073 ms
1108 bytes from 4.2.2.2: icmp_seq=6 ttl=249 time=30.072 ms
1108 bytes from 4.2.2.2: icmp_seq=7 ttl=249 time=30.059 ms
1108 bytes from 4.2.2.2: icmp_seq=8 ttl=249 time=30.178 ms
1108 bytes from 4.2.2.2: icmp_seq=9 ttl=249 time=32.063 ms
1108 bytes from 4.2.2.2: icmp_seq=10 ttl=249 time=35.162 ms
1108 bytes from 4.2.2.2: icmp_seq=11 ttl=249 time=32.015 ms
1108 bytes from 4.2.2.2: icmp_seq=12 ttl=249 time=30.058 ms
1108 bytes from 4.2.2.2: icmp_seq=13 ttl=249 time=31.776 ms
1108 bytes from 4.2.2.2: icmp_seq=14 ttl=249 time=30.310 ms
1108 bytes from 4.2.2.2: icmp_seq=15 ttl=249 time=30.078 ms
1108 bytes from 4.2.2.2: icmp_seq=16 ttl=249 time=30.083 ms
1108 bytes from 4.2.2.2: icmp_seq=17 ttl=249 time=32.079 ms
1108 bytes from 4.2.2.2: icmp_seq=18 ttl=249 time=30.066 ms
1108 bytes from 4.2.2.2: icmp_seq=19 ttl=249 time=30.164 ms
1108 bytes from 4.2.2.2: icmp_seq=20 ttl=249 time=30.322 ms
1108 bytes from 4.2.2.2: icmp_seq=21 ttl=249 time=32.009 ms
1108 bytes from 4.2.2.2: icmp_seq=22 ttl=249 time=30.098 ms
1108 bytes from 4.2.2.2: icmp_seq=23 ttl=249 time=30.322 ms
1108 bytes from 4.2.2.2: icmp_seq=24 ttl=249 time=30.061 ms
1108 bytes from 4.2.2.2: icmp_seq=25 ttl=249 time=30.094 ms
1108 bytes from 4.2.2.2: icmp_seq=26 ttl=249 time=30.340 ms
1108 bytes from 4.2.2.2: icmp_seq=27 ttl=249 time=32.030 ms
^C
--- 4.2.2.2 ping statistics ---
28 packets transmitted, 28 packets received, 0% packet loss
round-trip min/avg/max/stddev = 30.058/30.731/35.162/1.141 ms

TestBox> show version
Hostname: TestBox
Model: j6350
JUNOS Software Release [9.0R1.10] (Export edition)
TestBox>