[ovs-dev] TOS for BFD packets

Raymond Burkholder ray at oneunified.net
Tue Oct 17 10:55:56 UTC 2017

> That's a good point, I don't have experience with that (what's the best
> class), but we should make sure BFD packet, as control/monitoring traffic,
> prioritised over other types of traffic.

As indicated by Pradeep, CS6 is a good value, and I've seen that in various

> On Tue, Oct 17, 2017 at 11:12 AM, Venkatesan Pradeep <
> venkatesan.pradeep at ericsson.com> wrote:
> > Hi Ben,
> >
> > The implementations I've worked on have used tos=0xC0 (DSCP CS6).
> > Given that DSCP CS6 is recommended for network control traffic, and is
> > used by OSPF, BGP etc., I think it is likely that many implementations
> > do that for BFD too. Since BFD flaps have significant impact, marking
> > BFD packets with the right DSCP value will allow the network to apply
> > the right QoS for those packets and prevent BFD flaps due to network
> congestion.
> >

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