[openstack-dev] [neutron] [ovs] How to update flows in br-tun proactively

Xiao Ma (xima2) xima2 at cisco.com
Wed Feb 17 11:10:02 UTC 2016


Hi, JingTing

The flow should be updated after the rarp broadcast packet be send by qemu.
So I think you should make sure whether the broadcast packet has been send and received by the host.


Best regards,

Xiao Ma (xima2 at cisco.com<mailto:xima2 at cisco.com>)
马啸
SDN Architect & OpenStack specialist
Hybrid Cloud
Cisco System (China)
Mobile: (+86) 18911219332




在 2016年2月17日,下午3:57,康敬亭 <jingting at unitedstack.com<mailto:jingting at unitedstack.com>> 写道:

Hi guys:

The bug has be reported on https://bugs.launchpad.net/neutron/+bug/1541738

The flow in br-tun as below is generated by learning flow, and not updated immediately after vm live migration.

Original flow:
cookie=0x0, duration=194.884s, table=20, n_packets=0, n_bytes=0, hard_timeout=300, idle_age=194, priority=1,vlan_tci=0x0306/0x0fff,dl_dst=5a:c6:4f:34:61:06 actions=load:0->NXM_OF_VLAN_TCI[],load:0x1ef->NXM_NX_TUN_ID[],output:24

Updated flow:
cookie=0x0, duration=194.884s, table=20, n_packets=0, n_bytes=0, hard_timeout=300, idle_age=194, priority=1,vlan_tci=0x0306/0x0fff,dl_dst=5a:c6:4f:34:61:06 actions=load:0->NXM_OF_VLAN_TCI[],load:0x1ef->NXM_NX_TUN_ID[],output:26

Anyone has idea how to update this flow proactively.thanks!

jingting
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