Bug 1255112

Summary: [RFE][Neutron] Backport add onlink route when multiple external subnets
Product: Red Hat OpenStack Reporter: Jon Schlueter <jschluet>
Component: openstack-neutronAssignee: lpeer <lpeer>
Status: CLOSED ERRATA QA Contact: Itzik Brown <itbrown>
Severity: high Docs Contact:
Priority: high    
Version: 4.0CC: amuller, chrisw, dcadzow, ebarrera, ihrachys, jschluet, lpeer, lyarwood, mkolesni, mlopes, nyechiel, oblaut, sputhenp, tfreger, yeylon
Target Milestone: z5Keywords: FeatureBackport, FutureFeature, Triaged, ZStream
Target Release: 5.0 (RHEL 6)   
Hardware: Unspecified   
OS: Unspecified   
Whiteboard:
Fixed In Version: openstack-neutron-2014.1.4-3.el6ost Doc Type: Enhancement
Doc Text:
Previously, when using multiple subnets on an external network, traffic from one subnet to the other would be forwarded through the upstream router first. This resulted in massive inefficiency, to the point that adoption of the concept of multiple subnets on an external network was hindered. This update addresses this issue by adding an on-link route to each subnet. As a result, a router connected to an external network is attached to one subnet, thus having one IP address (even if that network has multiple subnets). With this fix, the router will still consume an IP address from only subnet, but also has an on-link route to all subnets on the network.
Story Points: ---
Clone Of: 1185200 Environment:
Last Closed: 2015-09-10 11:51:54 UTC Type: Bug
Regression: --- Mount Type: ---
Documentation: --- CRM:
Verified Versions: Category: ---
oVirt Team: --- RHEL 7.3 requirements from Atomic Host:
Cloudforms Team: --- Target Upstream Version:
Embargoed:
Bug Depends On: 1185200    
Bug Blocks: 1188003    

Comment 3 Itzik Brown 2015-09-01 09:35:07 UTC
Verified in https://bugzilla.redhat.com/show_bug.cgi?id=1185200 using RHEL7.

Comment 5 errata-xmlrpc 2015-09-10 11:51:54 UTC
Since the problem described in this bug report should be
resolved in a recent advisory, it has been closed with a
resolution of ERRATA.

For information on the advisory, and where to find the updated
files, follow the link below.

If the solution does not work for you, open a new bug report.

https://rhn.redhat.com/errata/RHBA-2015-1755.html