Op 21 sep. 2012, om 09:43 heeft Camiel Dobbelaar <c...@sentia.nl> het volgende geschreven:
> > Can you show from both systems with tcpdump what the packets look like? > > You are using normal (no flood) ping and the systems and switch are not > loaded with other traffic? > > No flooding ping, just normal ping packets. I will create a tcpdump later. But the output of a 1472 and 1473 ping packet looks like this. And even if I disable PF the problem stays the same. Switch is handling around 350 mbps of traffic at the moment of doing this pings. # ping -s 1472 -c 20 10.0.1.239 PING 10.0.1.239 (10.0.1.239): 1472 data bytes 1480 bytes from 10.0.1.239: icmp_seq=0 ttl=255 time=1.782 ms 1480 bytes from 10.0.1.239: icmp_seq=1 ttl=255 time=1.499 ms 1480 bytes from 10.0.1.239: icmp_seq=2 ttl=255 time=1.244 ms 1480 bytes from 10.0.1.239: icmp_seq=3 ttl=255 time=1.339 ms 1480 bytes from 10.0.1.239: icmp_seq=4 ttl=255 time=1.453 ms 1480 bytes from 10.0.1.239: icmp_seq=5 ttl=255 time=1.486 ms 1480 bytes from 10.0.1.239: icmp_seq=6 ttl=255 time=1.627 ms 1480 bytes from 10.0.1.239: icmp_seq=7 ttl=255 time=2.323 ms 1480 bytes from 10.0.1.239: icmp_seq=8 ttl=255 time=1.386 ms 1480 bytes from 10.0.1.239: icmp_seq=9 ttl=255 time=1.511 ms 1480 bytes from 10.0.1.239: icmp_seq=10 ttl=255 time=1.578 ms 1480 bytes from 10.0.1.239: icmp_seq=11 ttl=255 time=1.552 ms 1480 bytes from 10.0.1.239: icmp_seq=12 ttl=255 time=1.732 ms 1480 bytes from 10.0.1.239: icmp_seq=13 ttl=255 time=1.279 ms 1480 bytes from 10.0.1.239: icmp_seq=14 ttl=255 time=1.369 ms 1480 bytes from 10.0.1.239: icmp_seq=15 ttl=255 time=1.399 ms 1480 bytes from 10.0.1.239: icmp_seq=16 ttl=255 time=1.513 ms 1480 bytes from 10.0.1.239: icmp_seq=17 ttl=255 time=1.546 ms 1480 bytes from 10.0.1.239: icmp_seq=18 ttl=255 time=1.551 ms 1480 bytes from 10.0.1.239: icmp_seq=19 ttl=255 time=1.483 ms --- 10.0.1.239 ping statistics --- 20 packets transmitted, 20 packets received, 0.0% packet loss round-trip min/avg/max/std-dev = 1.244/1.532/2.323/0.227 ms # ping -s 1473 -c 20 10.0.1.239 PING 10.0.1.239 (10.0.1.239): 1473 data bytes 1481 bytes from 10.0.1.239: icmp_seq=1 ttl=255 time=2.107 ms 1481 bytes from 10.0.1.239: icmp_seq=2 ttl=255 time=2.035 ms 1481 bytes from 10.0.1.239: icmp_seq=3 ttl=255 time=2.045 ms 1481 bytes from 10.0.1.239: icmp_seq=4 ttl=255 time=2.048 ms 1481 bytes from 10.0.1.239: icmp_seq=6 ttl=255 time=2.708 ms 1481 bytes from 10.0.1.239: icmp_seq=7 ttl=255 time=1.768 ms 1481 bytes from 10.0.1.239: icmp_seq=8 ttl=255 time=2.274 ms 1481 bytes from 10.0.1.239: icmp_seq=9 ttl=255 time=1.775 ms 1481 bytes from 10.0.1.239: icmp_seq=11 ttl=255 time=3.969 ms 1481 bytes from 10.0.1.239: icmp_seq=13 ttl=255 time=5.679 ms 1481 bytes from 10.0.1.239: icmp_seq=14 ttl=255 time=2.012 ms 1481 bytes from 10.0.1.239: icmp_seq=15 ttl=255 time=2.148 ms 1481 bytes from 10.0.1.239: icmp_seq=17 ttl=255 time=2.179 ms 1481 bytes from 10.0.1.239: icmp_seq=18 ttl=255 time=1.796 ms 1481 bytes from 10.0.1.239: icmp_seq=19 ttl=255 time=3.433 ms --- 10.0.1.239 ping statistics --- 20 packets transmitted, 15 packets received, 25.0% packet loss round-trip min/avg/max/std-dev = 1.768/2.531/5.679/1.035 ms
