hi, i get those strange messages in my syslog Mar 26 16:37:24 bgp softflowd[10249]: Unable to export flows Mar 26 16:37:28 bgp last message repeated 3 times Mar 26 16:39:28 bgp last message repeated 4 times ideas where they come from? memic
memic wrote:> hi, > > i get those strange messages in my syslog > > Mar 26 16:37:24 bgp softflowd[10249]: Unable to export flows > Mar 26 16:37:28 bgp last message repeated 3 times > Mar 26 16:39:28 bgp last message repeated 4 times > > ideas where they come from?Is it possible that your firewall disallows outgoing UDP for your flows? Try enabling verbosity.
no, the export is working, but i get those errors from time to time.. Cristian KLEIN wrote:> memic wrote: > >> hi, >> >> i get those strange messages in my syslog >> >> Mar 26 16:37:24 bgp softflowd[10249]: Unable to export flows >> Mar 26 16:37:28 bgp last message repeated 3 times >> Mar 26 16:39:28 bgp last message repeated 4 times >> >> ideas where they come from? >> > > Is it possible that your firewall disallows outgoing UDP for your flows? > Try enabling verbosity. >
On Tue, 27 Mar 2007, memic wrote:> no, the export is working, but i get those errors from time to time.. > > Cristian KLEIN wrote: > > memic wrote: > > > >> hi, > >> > >> i get those strange messages in my syslog > >> > >> Mar 26 16:37:24 bgp softflowd[10249]: Unable to export flows > >> Mar 26 16:37:28 bgp last message repeated 3 times > >> Mar 26 16:39:28 bgp last message repeated 4 times > >> > >> ideas where they come from? > >> > > > > Is it possible that your firewall disallows outgoing UDP for your flows? > > Try enabling verbosity.This message can occur in a couple of cases, the two that spring to mind are: 1. UDP socket send buffer is full. softflowd may benefit from an increase of the send buffer, similar to the change I made to flowd: http://cvsweb.mindrot.org/index.cgi/flowd/privsep.c.diff?r1=1.29;r2=1.30 (patches welcome) 2. ICMP unreachable errors from the export target host or intervening gateways -- there isn''t much softflowd can do in this case. -d