Err… correction. Each host has a unique MAC, not each router. Sorry!
http://assafmuller.com/2015/04/15/distributed-virtual-routing-overview-and-eastwest-routing/
James
From: James Denton
<james.den...@rackspace.com<mailto:james.den...@rackspace.com>>
Reply-To: "OpenStack Development Mailing List (not for usage questions)"
<openstack-dev@lists.openstack.org<mailto:openstack-dev@lists.openstack.org>>
Date: Friday, March 18, 2016 at 11:47 PM
To: "OpenStack Development Mailing List (not for usage questions)"
<openstack-dev@lists.openstack.org<mailto:openstack-dev@lists.openstack.org>>
Subject: Re: [openstack-dev] [neutron][dvr]What does table 9 used for in br-tun?
Each DVR router has a unique MAC address that can be found in the Neutron DB in
the dvr_host_macs table. Those will MACs will likely match what’s in the flow
rules there.
This presentation from the Paris summit (Page 19-20) breaks it down in some
detail.
https://www.openstack.org/assets/presentation-media/Openstack-kilo-summit-DVR-Architecture-20141030-Master-submitted-to-openstack.pdf
James
From: Zhi Chang <chang...@unitedstack.com<mailto:chang...@unitedstack.com>>
Reply-To: "OpenStack Development Mailing List (not for usage questions)"
<openstack-dev@lists.openstack.org<mailto:openstack-dev@lists.openstack.org>>
Date: Friday, March 18, 2016 at 11:33 PM
To: openstack-dev
<openstack-dev@lists.openstack.org<mailto:openstack-dev@lists.openstack.org>>
Subject: [openstack-dev] [neutron][dvr]What does table 9 used for in br-tun?
hi guys.
In DVR mode, I have some questions about flows of table 9 in br-tun. I see
these flows in br-tun:
cookie=0x9a5f42115762fc76, duration=392186.503s, table=9, n_packets=1,
n_bytes=90, idle_age=247, hard_age=65534, priority=1,dl_src=fa:16:3f:64:82:2f
actions=output:1
cookie=0x9a5f42115762fc76, duration=392186.447s, table=9, n_packets=0,
n_bytes=0, idle_age=65534, hard_age=65534, priority=1,dl_src=fa:16:3f:76:6c:6f
actions=output:1
cookie=0x9a5f42115762fc76, duration=392186.388s, table=9, n_packets=0,
n_bytes=0, idle_age=65534, hard_age=65534, priority=1,dl_src=fa:16:3f:87:39:a3
actions=output:1
cookie=0x9a5f42115762fc76, duration=392186.333s, table=9, n_packets=0,
n_bytes=0, idle_age=65534, hard_age=65534, priority=1,dl_src=fa:16:3f:93:41:45
actions=output:1
Port 1 is a patch interface which is connecting to br-int.
Question A: there are for mac addresses in these flows. But these mac
addresses don't in my Neutron. What do they come from??
Question B: The action of each flow is output:1, why? Why put the packets to
br-int?
Thanks
Zhi Chang
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