As network operators converge their existing data (ie: Asynchronous Transfer Mode (ATM) and Frame Relay) and new IP VPN and access services (Ethernet) onto a common Multiprotocol Label Switching (MPLS)-based network infrastructure, there is an increasing need for monitoring and trouble shooting capabilities of end-to-end MPLS network connectivity. Especially, when the increasing stringent Service Level Agreement (SLA) requirements are considered for end-to-end network performance, jitter, and delay, driven by new services such as VoIP and video, the ability for Service Providers to efficiently detect, isolate, and troubleshoot end-to-end network performance and connectivity has become crucial to compete in the market place today.
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