LBaaS - No load balancing when client and VIP on same subnet

Bug #1533437 reported by Michael Micucci on 2016-01-13
6
This bug affects 1 person
Affects Status Importance Assigned to Milestone
midonet
Confirmed
Medium
Unassigned

Bug Description

I have various topologies in my Zephyr (https://launchpad.net/zephyr-neutron) LBaaS test (tests.neutron.features.lbaas.test_lbaas_vip) which place the client VM (which sends TCP packets and expects an echo reply from the LB) onto the same subnet as the VIP. These all fail to receive any echo replies.

The root cause is apparently due to none of the traffic being sent to the router (as they are on the same subnet, it's purely L2), so the LB never has a chance to run.

One possible solution might be to set the Bridge device to force all traffic destined for a VIP to the router which has an interface on the same subnet as the associated pool for the VIP.

The Zephyr tests that fail are:

* test_lbaas_vip_on_pinger_subnet_pinger_on_pinger_subnet
* test_lbaas_vip_on_member_subnet_pinger_on_member_subnet
* test_lbaas_vip_on_pool_subnet_pinger_on_pool_subnet

Changed in midonet:
status: New → Confirmed
importance: Undecided → Medium
milestone: none → 5.1
JF Joly (jfj) wrote :
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