Bug 1598399 - [Netvirt] VM associated to vxlan network is not reachable because of ARP flow missing
Summary: [Netvirt] VM associated to vxlan network is not reachable because of ARP flow...
Keywords:
Status: CLOSED ERRATA
Alias: None
Product: Red Hat OpenStack
Classification: Red Hat
Component: opendaylight
Version: 13.0 (Queens)
Hardware: Unspecified
OS: Unspecified
high
high
Target Milestone: z2
: 13.0 (Queens)
Assignee: Aswin Suryanarayanan
QA Contact: Tomas Jamrisko
URL:
Whiteboard: Netvirt
Depends On:
Blocks:
TreeView+ depends on / blocked
 
Reported: 2018-07-05 10:44 UTC by Janki
Modified: 2022-07-09 12:05 UTC (History)
6 users (show)

Fixed In Version: opendaylight-8.3.0-2.el7ost
Doc Type: Bug Fix
Doc Text:
Some flows were missing from the ARP table and the flow programming generated an error due to a missing group. As a result, L2 failed and affected most of the traffic. The flow programming now waits for the group to be added. The group is always present and L2 traffic succeeds.
Clone Of:
Environment:
N/A
Last Closed: 2018-08-29 16:20:16 UTC
Target Upstream Version:
Embargoed:


Attachments (Terms of Use)
karaf logs, data dumps, ovs logs, flows, OS CLI outputs (3.72 MB, application/x-xz)
2018-07-05 10:44 UTC, Janki
no flags Details


Links
System ID Private Priority Status Summary Last Updated
OpenDaylight Bug NETVIRT-1371 0 None None None 2018-07-19 15:13:38 UTC
OpenDaylight gerrit 74030 0 None None None 2018-07-19 15:14:17 UTC
Red Hat Issue Tracker ODL-127 0 None None None 2022-07-09 12:05:47 UTC
Red Hat Issue Tracker OSP-17313 0 None None None 2022-07-09 12:05:49 UTC
Red Hat Product Errata RHSA-2018:2598 0 None None None 2018-08-29 16:21:11 UTC

Description Janki 2018-07-05 10:44:46 UTC
Created attachment 1456749 [details]
karaf logs, data dumps, ovs logs, flows, OS CLI outputs

Description of problem:
When a VM is attached to vxlan network, its FIP is pingable.

Version-Release number of selected component (if applicable):
OSP13 + Oxygen

How reproducible:
sometimes

Steps to Reproduce:
1. Deploy ODL + OSP13
2. Create a VM attached to VxLAN network and 1 router
3. Ping FIP of the VM

Actual results:
Ping doesnot work

Expected results:
Ping should work

Additional info:
Initial analysis suggests an ARP flow missing in table=43 for OVS on compute-1 where the VM is hosted.

on datdd umps, grep -irn "arp.check.table.43.arp.request" shows we have five entires in config but only 4 in operational

ovs logs snippet - sending OFPBAC_BAD_OUT_GROUP error reply to OFPT_FLOW_MOD message

Comment 7 Joanne O'Flynn 2018-08-14 09:45:51 UTC
This bug is marked for inclusion in the errata but does not currently contain draft documentation text. To ensure the timely release of this advisory please provide draft documentation text for this bug as soon as possible.

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Comment 10 errata-xmlrpc 2018-08-29 16:20:16 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://access.redhat.com/errata/RHSA-2018:2598


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