This paper proposes an architecture for routing Internet protocol (IP) packets directly on optical networks. The use of label switching is assumed in the IP routers, while a new routing architecture is introduced to transport IP packets across an optical backbone network. The architecture is based on a two-tier multiplexing approach, with wavelength division multiplexing (WDM) addressing the nu...

WDM technology has increased network link capacity dramatically, moving the network bottleneck from the transport to the routing layer. Hybrid electro-optical architectures seem at the moment a reliable and cost-effective solution for near-future implementations of the routing/switching layer. In this paper we present a novel approach to dynamic optical circuit switching based on the Optical IP...

Optical-packet switching is an attractive technology geared towards integration of data and optical networking. The immense bandwidth provided by optical networking and the capability to switch packets directly at the optical layer are a powerful combination for the Next Generation Internet where scalability, agility, and performance are important considerations. Early optical-packet switching ...

LSR (Label Switching Router)s in MPLS (MultiProtocol Label Switching) networks map arriving IP flows into some labels on Layer 2 switching fabric and establish LSP (Label Switching Path)s. By using LSPs, LSRs not only transmit IP datagrams fast with cut-through mechanism, but also solve traffic engineering issue to optimize the delay of some IP datagram flows. So far, we have analyzed the perfo...

In this paper we propose a simple model that analyzes the cost saving achieved by Optical IP Switching (OIS), a novel optical architecture, compared to a conventional IP-over-WDM network, where the IP router connects directly to the WDM module. The analysis we propose shows that OIS can bring substantial cost savings in the initial investment of network operators.

A field trial of 4K uncompressed streaming over 80 (8λ x 10) Gbps colored optical packet switching network with SOA based broadcast-and-select switch and stacked optical-code (OC) label processing is reviewed. Introduction “4K” motion pictures (3840x2048 pixels), which is 4 times pixel counts of high-definition (HD), are promising imaging technology for digital cinema, computer visualization, a...

Compaction relocates active subcubes in a fragmented hypercube so as to produce a contiguous free region and eliminate the adverse impact of fragmentation on performance. The overhead of compaction is often contributed primarily by task migration, which makes use of disjoint paths for transmitting migrated data. Since task migration usually involves transmitting a large amount of data, the time...

IP Address blacklisting [1, 2] works by storing a list of the origin of known spam and then ignoring further email sent from that IP address, under the assumption it is also spam. This approach has two problems: spammers are able to circumvent it by regularly switching IP addresses, and after spam has been sent from an IP address hijacked by a spammer, email sent by the unsuspecting computer us...

In IP over WDM networks, optical paths (OP’s) form a virtual topology seen from the upper IP layer, and greatly relieve the burden of electronic processing thanks to optical bypasses. However, in contrast to the circuit-switching, connection-oriented and coarser OP’s, the IP is packet-switching, connectionless and finely granular in nature. Special care should be taken in the control plane to b...