[openstack-dev] [Neutron]Relationship between physical networks and segment

Miguel Lavalle miguel at mlavalle.com
Tue Mar 29 19:38:25 UTC 2016


I am writing a patchset to build a mapping between hosts and network
segments. The goal of this mapping is to be able to say whether a host has
access to a given network segment. I am building this mapping assuming that
if a host A has a bridges mapping containing 'physnet 1' and a segment has
'physnet 1' in its 'physical_network' attribute, then the host has access
to that segment.

1) Is this assumption correct? Looking at method check_segment_for_agent in
seems to me to suggest that my assumption is correct?

2) Furthermore, when a segment is mapped to a physical network, is there a
one to one relationship between segments and physical nets?

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