openstack/openstack-ansible-os_neutron
Code Issues Proposed changes

Set appropriate default for vxlan multicast ttl

Browse Source 
Currently no default is set which means vlxan multicast traffic
is dropped at the first L3 router. This patch increases the default
to 32 which is sufficient for any reasonable network fabric and
can be overridden if necessary.

Without this patch vxlan project networks on a routed underlay network
are not functional

Change-Id: Iddf2e412b3d1f23362d94a7eabd8c062d68ae287
Closes-Bug: 1755790
This commit is contained in:
Jonathan Rosser 2019-02-13 16:52:52 +00:00
parent 3dd5cbd165
commit 43f4fe7b3a
2 changed files with 4 additions and 0 deletions
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3
defaults/main.yml
View File

@ -372,6 +372,9 @@ neutron_vxlan_enabled: true
## The neutron multicast group address. This should be set as a host variable if used.
neutron_vxlan_group: "239.1.1.1"
# The neutron multicast time-to-live. Number of L3 hops before routers will drop the traffic
neutron_vxlan_ttl: 32
neutron_sriov_excluded_devices: ""
# neutron_local_ip is used for the VXLAN local tunnel endpoint

1
templates/plugins/ml2/linuxbridge_agent.ini.j2
View File

@ -16,6 +16,7 @@ vxlan_group = {{ neutron_vxlan_group }}
# VXLAN local tunnel endpoint
local_ip = {{ neutron_local_ip }}
l2_population = {{ neutron_plugins[neutron_plugin_type].l2_population }}
ttl = {{ neutron_vxlan_ttl }}
{% else %}