diagnosticate network problem

[Tech W.]

Hello,


I just found my host (linux with kernel 2.6.24) has problems on connecting to the local gateway.

When I ping gateway, some packages are lost, this is the ping result:


--- 211.66.80.xx ping statistics ---
100 packets transmitted, 98 received, 2% packet loss, time 99248ms
rtt min/avg/max/mdev = 16.582/27.441/51.152/5.844 ms


And average RTT is too large (27 ms).
>From my host to gateway there is only 1 hop by traceroute.

How can I diagnosticate this type of network problem? use tcpdump? what's the correct syntax? Thanks.



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