The value of svcVllSiteIdEncapValue specifies the encap-value of the
port associated with this site.
An 'inconsistentValue' error is returned when svcVllSiteIdPortId is
set to non-default and svcVllSiteIdEncapValue is set to its default
value or when svcVllSiteIdPortId is set to its default value and
svcVllSiteIdEncapValue is set to non-default value.