Hello,
Environment:
/--- T1 1 ---\ /--- T1 3 ---\
Server 1 < > Server 2 < > Server 3
\--- T1 2 ---/ \--- T1 4 ---/
The links 1-2 and 3-4 are bonded by TEQL.
TCP performance between Servers 1 and 2, and 2 and 3 is fine, as expected.
However, actual TCP throughput between Servers 1 and 3 drops dramatically
(compared to 1-2 and 2-3 performance), from ~320KBytes/sec to sometimes
below 120Kbytes/sec.
If I use a single T1 link between each server (thus removing TEQL from the
process), performance between servers 1 and 3 is fine.
I'm pretty sure the issue is related to TCP packet reordering on Server 2
(followed by routing to Server 3 and then reordering again once it reaches
Server 3). Questions:
- Is there any other possible cause for this?
- If packet reordering is really the problem, how could I solve it (or at
least minimize it)? Any suggestions?
Any help would be really appreciated.
Later,
Ivan
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