I think we have finally managed to locate the source of the issue.
In this machine we had 4x dual port cards which was picked up as Intel 82571EB cards and these were the cards in use.
We finally found out that the system also got progressively worse as more traffic flowed through it with loss being 0-1% with minimum traffic. (I’d say up to the 40-50M mark) after that it increased to the 3-4% mark anything above that threshold with some hosts going as high as 11%.
What I did also notice is with the dual port cards if I disabled the cards ports and re-enabled it seems the one port will also start flapping going up and down repeatedly until the entire system was rebooted. (I tested this result with the other cards to exclude a faulty card and the results was the same.)
This is a sample during one of the tests:
PigSpotter_Forum.PNG
This lead me to try bonding only the two onboard cards namely the BCM5708 cards and all the issues went away!!!! It seems the problem is indeed as you suspected the drivers used for the Intel 82571EB cards!!!
Here is a snip of the cards in the system at this point in time. (I have swopped the one dual port 82571EB card with a single port 82574L to see if its maybe an issue with certain revisions??? , but have yet to test)
FireANT.PNG
I also obtained another 4 port card but this would seem is not compatible?
4port_frikkie_card.PNG
Could you perhaps let me know if there are known issues like this with certain revisions of these cards and which ones I should avoid.
You mentioned many an issue will be resolved hopefully with version 7 of the OS but after much research it seems everyone is waiting desperately for it for years?
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