deploying and managing ip over wdm networks - Index of

Evaluation of IP over WDM Management Solutions 207
11.4.4 Network Inventory Management/Network Inventory Consistency to
Network Infrastructure
This scenario will evaluate the network inventory functionality of the NMS system.
This is the NMS capability to maintain the network inventory in an accurate
and consistent manner with respect to the underlying network
infrastructure. The NMS system, upon initialization, should not only discover
correctly the underlining network infrastructure and store it to the network
inventory; it should continue to check its consistency (i.e., modification,
removal, or addition of links or nodes). Through the GUI, the NMS operator
can evaluate the network inventory stored information.
The presentation of a precise and consistent view of the managed network
is considered as a basic functionality for an NMS and is part of all other
experiments.
11.5 The WINMAN Configuration Management Solution Evaluation
In order to evaluate the WINMAN system under the conditions close to a real
network operational environment, the experiments were carried out by means of
the network testbed described in Chapter 10. Besides the IP/WDM testbed and
the WINSMAN system, application layer devices are accommodated as
depicted in Figure 11.1 in order to get rid of the WINMAN functionality in the
context of a business case.
11.5.1 Integrated Experiment for Validating the WINMAN Functionality
The WINMAN functional attributes will be validated using an integrated
network provisioning scenario. The main purpose of this scenario, as shown in
Figure 11.1, is to establish an ICS between routers PE-1 and PE-2 using the P-3
intermediate node, instead of the shortest path, due to QoS constraints. The IP
link between PE-2 and P-3 is configured but not operational because there is no
physical (WDM) connectivity yet. In order to provide an ICS, the management
system has to first establish the physical link between PE-2 and P-3 and then
create a bidirectional LSP between the PE routers through the provider router.
The business case behind this scenario is that the WINMAN system is able to
find the resources and provide an ICS with QoS constraints, in a case where the
default shortest path could not do so.
This scenario involves multiple provisioning requests, and all of the scenario
steps along with the start-up conditions are listed next.
11.5.1.1 Start-Up Conditions
There are several start-up conditions.