deploying and managing ip over wdm networks - Index of

94 Deploying and Managing IP over WDM Networks
• Support of traffic and QoS parameters for MPLS LSPs derived from SLAs.
Policies and other requirements will be applied in the path-provisioning
request.
Secondary functions supporting these are intended to discover network
resources, network topology, and maintenance of an inventory of all network
resources with their status and their hierarchical relationship; to notify the service
management about service status; and to provide updates to the fault and
performance management layers reflecting the changes in the network configuration
and new services.
WINMAN offers an integrated and automated provisioning solution for
network service providers that offer IP-based network services (i.e., IP-VPN,
VoIP, and MoIP), transparently and independently from the underlying transport
network (i.e., ATM, SDH, or WDM).
6.2.2.3 Fault Management
In today’s service provider environment, it is no longer acceptable to simply
monitor for a network’s device-specific fault events. In a world where SLAs
impose penalties for network down time, network events must be correlated
with affected customers. Additionally, service providers can differentiate VPN
services by offering customers a “window” into the events associated with their
VPNs.
WINMAN offers a service level alarm monitoring and diagnostics tool
that provides network fault monitoring, network trouble isolation, and network
recovery. WINMAN is designed to help operators focus on important network
events by offering a combination of alarm processing rules, filtering, and customizable
alarm viewing. It will offer Web-based interfaces, which allow service
providers to select specific views of events and availability reporting associated
with particular services.
The main functions in the fault management area are:
• Report faults in the IP or optical domain in an intelligent and integrated
way. Reporting of primary faults, either in the electrical or optical
domain, should be supported after the corresponding filtering, analysis,
and correlation of the multiple alarms that are propagated in case of a
single fault. The report should include all of the attributes of the anticipated
alarms together with the list of affected LSPs.
• Recover faults in the IP or optical domain in an integrated way. In case the
automatic protection switching is not applicable in any of the domains
or it fails partially or completely, an automatic fault restoration mechanism
should apply to try to restore all the affected LSPs or IP plain