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packet over SONET

   Also found in: Acronyms, Wikipedia 0.28 sec.

packet over SONET

A metropolitan area network (MAN) or wide area network (WAN) transport technology that carries IP packets directly over SONET transmission without any data link facility such as ATM in between. Packet over SONET is intended to transmit data at the highest rates possible, because SONET has a smaller packet header overhead than ATM (28 bytes out of an 810-byte frame compared with 5 out of a 53-byte ATM cell). However, ATM has traditionally provided proven management and quality of service (QoS) for long haul transport. See RPR.

Transporting IP
In a LAN, IP generally runs over Ethernet. In a WAN, it typically is transported by ATM, which rides over SONET, and increasingly, directly over SONET. In the future, it is expected that IP will run directly over DWDM fiber (rightmost diagram).



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As the first in the industry to cost effectively combine packet over SONET functionality with an advanced 10 Gigabit Ethernet architecture, Force10 is driving down the cost of building and maintaining networks for service providers, Internet exchanges, broadband providers, transit carriers and hosting providers.
Force10 Networks Transforms Service Provider Network Economics With ... by Business Wire
Ixia (Nasdaq:XXIA), a leading, global provider of IP network testing solutions, announced today the availability of a new virtual network interface card (VNIC) driver for its industry-leading IxANVL protocol conformance testing software that enables testing over OC-48 and OC-192 Packet over SONET (POS) networks.
Ixia Extends Economical Protocol Conformance Testing to High-Speed ... by Business Wire
Ixia (Nasdaq:XXIA), a leading provider of high-speed, multiport network performance analysis, announced at SUPERCOMM, Booth 11719, today their XFP-based performance analysis test platform that combines the test functions for 10 Gigabit Ethernet LAN, 10 Gigabit Ethernet WAN, OC-192 Packet over SONET (POS), and OC-192 Bit Error Rate Testing (BERT), onto a single test interface.
Ixia Introduces World's First XFP-based Performance Analysis System ... by Business Wire
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