[CentOS 1.20-55~icehouse.el6] Unable to ping remote VM via a multi-stage Service Chain with ECMP

[Ganesha HV]

Setup:
=====
env.roledefs = {
    'all': [host1, host2, host3, host4, host5],
    'cfgm': [host1],
    'control': [host2, host3],
    'compute': [host4, host5],
    'collector': [host1],
    'openstack': [host1],
    'webui': [host1],
    'database': [host1],
    'build': [host_build],
}

env.hostnames = {
     'all': ['nodec4', 'nodec5', 'nodec26', 'nodei27', 'nodei28']
}

1]. Created a service-chain with 3 service-instances and 2 SVMs in each of the SI between vn1 and vn2.
2]. Observed that ping from vm1 to vm2 fails.

Naveen is aware of the issue.

[OpenContrail Admin (ci-admin-f)]

Reviewed: https://review.opencontrail.org/3817
Committed: http://github.org/Juniper/contrail-controller/commit/a21d82accf1b38ec5597feb5c304c5d40f104359
Submitter: Zuul
Branch: R1.10

commit a21d82accf1b38ec5597feb5c304c5d40f104359
Author: Naveen N <email address hidden>
Date: Thu Oct 16 04:43:55 2014 -0700

* All the component nh member of a composite NH are policy disabled
nexthop, since composite NH itself is policy enabled and there is
no need for component member to policy disabled. When a transition
happens from non-ecmp to ecmp, local interface nexthop could be
added with policy enabled flag, and finding of the nexthop inside
composite NH would fail since we always search for policy disabled
nh inside composite NH. Since nexthop lookup fails flow ecmp index
would not be set, resulting in drop
Unit test added to verify the case where transition happens from
non-ecmp to ecmp with local nexthop pre-existing
Closes-bug:#1381978

Change-Id: Ib097a77450afcc7ebba622a0732af3c1105c7db9

[OpenContrail Admin (ci-admin-f)]

Reviewed: https://review.opencontrail.org/4858
Committed: http://github.org/Juniper/contrail-controller/commit/f1370e28e6e1cb8e9bc6b4bdac7b4c4c1442aefc
Submitter: Zuul
Branch: R2.0

commit f1370e28e6e1cb8e9bc6b4bdac7b4c4c1442aefc
Author: Naveen N <email address hidden>
Date: Thu Nov 20 22:18:14 2014 -0800

* All the component nh member of a composite NH are policy disabled
nexthop, since composite NH itself is policy enabled and there is
no need for component member to policy disabled. When a transition
happens from non-ecmp to ecmp, local interface nexthop could be
added with policy enabled flag, and finding of the nexthop inside
composite NH would fail since we always search for policy disabled
nh inside composite NH. Since nexthop lookup fails flow ecmp index
would not be set, resulting in drop
Unit test added to verify the case where transition happens from
non-ecmp to ecmp with local nexthop pre-existing
Closes-bug:#1381978

Change-Id: Iba53ae69c9bbdf8e796ee56d77b0a961b2f4ebf4

[OpenContrail Admin (ci-admin-f)]

Reviewed: https://review.opencontrail.org/4819
Committed: http://github.org/Juniper/contrail-controller/commit/127454b6bcd15e3898f5c4809067cf211fe36f09
Submitter: Zuul
Branch: master

commit 127454b6bcd15e3898f5c4809067cf211fe36f09
Author: Naveen N <email address hidden>
Date: Thu Nov 20 03:00:00 2014 -0800

* All the component nh member of a composite NH are policy disabled
nexthop, since composite NH itself is policy enabled and there is
no need for component member to policy disabled. When a transition
happens from non-ecmp to ecmp, local interface nexthop could be
added with policy enabled flag, and finding of the nexthop inside
composite NH would fail since we always search for policy disabled
nh inside composite NH. Since nexthop lookup fails flow ecmp index
would not be set, resulting in drop
Unit test added to verify the case where transition happens from
non-ecmp to ecmp with local nexthop pre-existing
Closes-bug:#1381978

Change-Id: I95068b324870f3291a3cbb4bcc756a7c1ef791b4