Re: [Ryu-devel] How to monitor packets being dropped? Sent back a packet back to the port where it came from?

[<yam...@va...>]

there are various places for OVS to drop packets.  (are you using OVS?)

you might want to try "ovs-appctl bridge/dump-flows bridge-name"
to see n_bytes/n_packets for internal flows.

YAMAMOTO Takashi

> Hi,
> 
> I am trying to develop inband mechanisms for fast reaction to failures
> and I am experiencing a very high packet loss.
> 
> "--- 11.0.0.2 ping statistics ---
> 573 packets transmitted, 13 received, 97% packet loss, time 574650ms
> rtt min/avg/max/mdev = 1.259/2.291/5.683/1.140 ms"
> 
> which is probably due to the fact that some of my packets get in a
> infinite (or not infinite but very long) loop (even though it
> shouldn't happen) but I would like to
> understand why and where they get dropped.
> 
> And therefore I would like to know if there is a way to check if a
> switch (I am using mininet) is dropping packets?
> 
> Because I didn't put any rule to drop them and I am not decrementing
> the ttl so it cannot from that...
> 
> What is the default behaviour/scenario for a switch to decide to
> drop a packet?
> 
> Could it be because sometimes I am sending the packet back to the port
> where the packet came from?
> 
> Best,
> Climent
> 
> ------------------------------------------------------------------------------
> BPM Camp - Free Virtual Workshop May 6th at 10am PDT/1PM EDT
> Develop your own process in accordance with the BPMN 2 standard
> Learn Process modeling best practices with Bonita BPM through live exercises
> http://www.bonitasoft.com/be-part-of-it/events/bpm-camp-virtual- event?utm_
> source=Sourceforge_BPM_Camp_5_6_15&utm_medium=email&utm_campaign=VA_SF
> _______________________________________________
> Ryu-devel mailing list
> Ryu...@li...
> https://lists.sourceforge.net/lists/listinfo/ryu-devel