Overview of
cross-domain management
Figure 1-1 shows an IP connection
between two routers riding over an optical network.
In the IP domain, the logical
connection exists between two interfaces, but the underlying optical network is
unknown to the IP
Domain Manager
.
The NetworkConnection element is discovered and managed by
.
In the Optical domain, the
Circuit traversing the network (shown in bold) is managed by an OTM
Domain Manager
,
but its purpose, and therefore impact, in the IP domain is unknown. The Circuit
element is managed by
.
Cross-domain
domains and OSI layers 1 and 3

Just as failures in the Optical
domain may result in symptoms in the IP domain, failures in the IP domain may
result in symptoms in the Optical domain. The
correlates failures in the Optical and IP domains to determine
the actual root cause and associate the root cause to the impacts in other
domains.