From: Gordon Baldwin (gordon.baldwin@gettyimages.com)
Date: Fri Sep 20 2002 - 15:21:37 EDT
We have two servers that are exhibiting weird network problems.
Our findings:
traffic from db01 to app01 is slow (ftp around 6k/s)
traffic from app01 to db01 is fast (ftp around 10000k/s)
traffic to and from app01 and db01 from any other server is OK (ftp 2000 to 4000 k/S)
The above numbers are backed up by other network applications, ftp just gives easy to read speed numbers.
app01 and db01 are on the same switch and we have tried several ports to rule out hardware problems on the switch.
Both are set to 100 full and the switches show the same.
We are getting no errors on the interfaces or on the switch.
db01 is a Sun V880 using the eri0 port, running Solaris 8
app01 is a Sun E420R using the hme0 port, running Solaris 8
output from ifconfig is identical for the two (except for the ip address and port name)
My only thought is that the 880 is overrunning the buffers on the 420 and it is thrashing the interface trying to slow it down.
Anyone with any good ideas?
Gordon Baldwin
Open Systems Adm. Manager
Getty Images
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