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Unformatted text preview: entering the network is IP trafc, spurred by the growth of the Internet and corporate intranets. IP provides primarily best-effort routing of packets from their source to destination and has no notion of connections. MPLS has emerged to expand the scope of IP to allow explicit routing of packets along dened paths through the network. Ethernet is another packet network technology. It is used in the enterprise domain and for transport within service providers. Ethernet also has a physical layer that supports optical transmission at the 1 Gb/s and 10 Gb/s rates. The Resilient Packet Ring is an alternative to the SONET/SDH ring for data packet trafc. It provides different services including guaranteed bandwidth and best effort, and fair access. Because of its ring topology, it is resilient to faults....
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- Spring '09