[ovs-discuss] DHCP and OVS

Justin Pettit jpettit at nicira.com
Mon Aug 11 20:11:18 UTC 2014


I asked about "ovs-dpctl dump-flows".  Also, please include the output of "ovs-dpctl show".

--Justin


On August 11, 2014 at 11:03:42 AM, MCGRATH, GIL (gm2391 at att.com) wrote:
> Justin,
>  
> While is in process of PXE booting.
>  
> # ovs-ofctl dump-flows br-em1
> NXST_FLOW reply (xid=0x4):
> cookie=0x0, duration=13577.846s, table=0, n_packets=11120087,
> n_bytes=927952497, idle_age=4, priority=0 actions=NORMAL
>  
> I ran it multiple time during the PXE boot - the same result except
> idle_age changed 0-4 and duration changed.
>  
> Gil
>  
>  
>  
>  
> On 8/11/14, 1:49 PM, "Justin Pettit" wrote:
>  
> >What about "ovs-dpctl dump-flows" while the reply is going through. The
> >flow will only be there for a second or two, so you'll need to be
> >somewhat fast.
> >
> >--Justin
> >
> >
> >On August 11, 2014 at 10:29:38 AM, MCGRATH, GIL (gm2391 at att.com) wrote:
> >> Justin,
> >>
> >> Flow is as follows:
> >>
> >> # ovs-ofctl dump-flows br-em1
> >> NXST_FLOW reply (xid=0x4):
> >> cookie=0x0, duration=11605.818s, table=0, n_packets=9506767,
> >> n_bytes=793634428, idle_age=1, priority=0 actions=NORMAL
> >>
> >>
> >>
> >> On 8/11/14, 1:26 PM, "Justin Pettit" wrote:
> >>
> >> >On August 11, 2014 at 10:21:05 AM, MCGRATH, GIL (gm2391 at att.com) wrote:
> >> >> > I am running KVM on ubuntu 14.04. I am trying to PXE boot a VM.
> >>When
> >> >> I try this, using tcpdump I see the DHCP Reply message on the ³em1²
> >> >> interface. But I do not see the DHCP Reply on the ³vnet0² interface
> >> >> that KVM creates on the ³br-em1² bridge. Therefore my PXE times
> >> >> out. Anyone ever see this? If so, do we know what the issue may be.
> >> >
> >> >What does your flow table look like from "ovs-ofctl dump-flows br-em1"?
> >> >While the replies are coming in, what do you see from "ovs-dpctl
> >> >dump-flows"?
> >> >
> >> >--Justin
> >> >
> >> >
> >> >
> >>
> >>
> >
>  
>  




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