The Internet is emerging as the new universal telecommunication medium. IP over WDM has been envisioned as one of the most attractive architectures for the new Internet. Consequently survivability is a crucial concern in designing IP over WDM networks. This paper presents a survey of the survivability mechanisms for IP over WDM networks and thus is intended to provide a summary of what has been done in this area and help further research. A number of optical layer protection techniques have been discussed. They are examined from the point of view of cost, complexity, and application. Survivability techniques are being made available at multiple layers of the network. This paper also studies the recovery features of each network layer and explains the impact of interaction between layers on survivability. The advantages and issues of multi-layer survivability have been identified. The main idea is that the optical layer can provide fast protection while the higher layers can provide intelligent restoration. With this idea in mind, a new scheme of carrying IP over WDM using MPLS or Multi Protocol Lambda-Switching has been discussed. Finally, an architecture is suggested by means of which the optical layer can perform an automatic protection switch, with priority considerations with the help of signaling from the higher layers.
Did you find this white paper useful?
33 out of 50 users found this white paper useful
Related white papers
Efficient Network Switching Hierarchy
In this paper, it is argued that the right granularity for grooming in the next-generation core optical network is STS-48 (2.5 Gbps), while STS-1 (51.8 Mbps) grooming is better suited...
OARnet Builds Statewide Optical DWDM Network to Meet Exploding Bandwidth Demand of Universities
The Ohio Academic Resources Network (OARnet) is the networking arm of Ohio's high-performance computing and networking center, also known as the Ohio Supercomputer Center (OSC). OARnet wanted 30% growth in...
Light Trails: A Sub-Wavelength Solution for Optical Networking
All-optical networks are able to transport data from source to destination entirely in the optical domain. This is a departure from current optical networks that rely on Optical-Electrical-Optical (OEO) conversion...
Metro Ethernet Gives Danish Service Provider the Power to Deliver Triple Play
To enable EnergiMidt to offer broadband, TV and telephony services for both residential and business customers. A carrier-grade Ethernet infrastructure covering the whole of the region, based on Nortel Optical...
Online Payment Processing - What you need to know (AU)
This guide will provide you with what you need to know about online payment processing: • Online Payment Processing Basics - The Payment Processing Network - How Payment Processing...
Converge IP and DWDM Layers in the Core Network
The Cisco IP over DWDM (IPoDWDM) solution for IP Next-Generation Networks (NGNs) enables the convergence of service providers' IP and DWDM core networks, increasing service flexibility and reliability while lowering...
Evolution Towards Volume Deployable 40-Gbps Networks
Despite the slowdown in the deployment of telecommunication equipment in the early 2000s, the demand for bandwidth hasn't stopped increasing. The explosion of video traffic has dictated new requirements on...
