Forum Discussion

dirome's avatar
dirome
Icon for Cirrus rankCirrus
Oct 22, 2014

What is flag SWE

Hi,   I have problems with balance of a one application, because after aproximately of 2 minutes the connection falls, on analisys that a did, I am seeing Flag SWE but i dont know what is that, co...
mimlo_61970's avatar
mimlo_61970
Icon for Cumulonimbus rankCumulonimbus
Oct 22, 2014

They have to do with explicit congestion notification. From the manpage: W (ECN CWR), E (ECN-Echo)

 

I am not overly familiar with this, but there seem to be a lot of problems in the past from different routers or firewalls not supporting this and breaking connections. I can't find any references to it that aren't 10+ years old. Since it is in the SYN packet though(the S in SWE), I would expect if this was your problem you wouldn't work at all.