Increasing numbers of service providers and mobile operators are using RSVP-TE based traffic engineering to provide bandwidth reservation and data-loss protection for MPLS tunnels, and to increase the predictability of traffic delivery. Deployments range from low numbers of ad-hoc TE tunnels to full tunnel meshes between core or even edge routers.
Unfortunately, while providing network managers with the means to implement specific routing policies, traffic engineering today suffers from a lack of visibility into the real-time, dynamically changing states of traffic engineering (TE) tunnels. This lack of visibility has a profoundly negative impact on network operations and engineering. Monitoring and troubleshooting processes are delayed for lack of timely information, driving up MTTR and OPEX. Change processes are more error-prone without up to date information on the true state of the network, affecting customer service delivery and triggering SLA payouts. And capacity planning is less accurate, wasting infrastructure investments and causing out of plan capital expenditures.
Fortunately, a solution exists to bring real-time, deep insight not only to TE tunnels but to the underlying IGP routing, overlaid Internet or MPLS VPN service routing, and network-wide traffic flows. Route analytics technology - which uses live routing protocol peerings as a source of unique intelligence into the dynamic behavior of IP networks, provides a way to understand the constantly changing behavior of all IP/MPLS routing and traffic, including RSVP-TE.
This white paper provides a brief overview of IP/MPLS traffic engineering and its common applications, explores the most important sources of tunnel dynamics, assesses current limitations to TE tunnel management visibility, explains how route analytics provides real-time visibility into TE tunnel dynamics, and demonstrates the advantages that network operations and engineering can gain by utilizing route analytics to monitor, analyze, troubleshoot and plan IP/MPLS traffic engineering networks.
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Unfortunately, while providing network managers with the means to implement specific routing policies, traffic engineering today suffers from a lack of visibility into the real-time, dynamically changing states of traffic engineering (TE) tunnels. This lack of visibility has a profoundly negative impact on network operations and engineering. Monitoring and troubleshooting processes are delayed for lack of timely information, driving up MTTR and OPEX. Change processes are more error-prone without up to date information on the true state of the network, affecting customer service delivery and triggering SLA payouts. And capacity planning is less accurate, wasting infrastructure investments and causing out of plan capital expenditures.
Fortunately, a solution exists to bring real-time, deep insight not only to TE tunnels but to the underlying IGP routing, overlaid Internet or MPLS VPN service routing, and network-wide traffic flows. Route analytics technology - which uses live routing protocol peerings as a source of unique intelligence into the dynamic behavior of IP networks, provides a way to understand the constantly changing behavior of all IP/MPLS routing and traffic, including RSVP-TE.
This white paper provides a brief overview of IP/MPLS traffic engineering and its common applications, explores the most important sources of tunnel dynamics, assesses current limitations to TE tunnel management visibility, explains how route analytics provides real-time visibility into TE tunnel dynamics, and demonstrates the advantages that network operations and engineering can gain by utilizing route analytics to monitor, analyze, troubleshoot and plan IP/MPLS traffic engineering networks.
Download paper
(Webtorials membership required. Click here to register or if you forgot your username/password.)
As always, this is an excellent paper from Packet Design. As is the case with Packet Design's papers, it's at a great technical level for our community with lots of detail.
I recommend it very highly.