Tellabs Adds Ethernet Aggregation to 5500 Digital Cross-Connect
Tellabs has added new Ethernet aggregation capabilities to its Tellabs 5500 digital cross-connect. These new capabilities enable service providers to aggregate hundreds of Ethernet streams into a single Gigabit Ethernet (Gig-E) interface. More specifically, the Tellabs 5500 system is being enhanced with Layer 2 functionality including:
IEEE 802.1p Q-in-Q traffic prioritization protocol, which enables service providers to use a single VLAN to support customers who have multiple VLANs;
the IEEE’s 802.1ad link aggregation protocol, which supports the use of multiple links between compatible bridges and routers;
low-order virtual tributaries; and
high-order synchronous transport signal (STS) virtual concatenation of SONET.
The Tellabs 5500 digital cross-connect’s Ethernet capabilities will be available in early 2005. http://www.tellabs.com/
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Every article published by Converge Digest is researched, curated, fact-checked and editorially reviewed by Jim Carroll, Editor & Publisher. AI-assisted drafting may be used to accelerate production, but all content is reviewed, refined and approved prior to publication.
You just read about Tellabs. One of the companies whose work it now carries:
Advanced Fibre Communications built Digital loop carrier and fiber access systems. What became of it?
Advanced Fibre Communications brought Digital loop carrier and fiber access systems to Telecom. That work was distinctive enough to lead to its acquisition by Tellabs for US$1.9B. The standalone name now passes into the archive — but the team and technology continue inside Tellabs today. One of 430 names here whose work outlived the company.
You just read about Ethernet. Here is what it replaced:
ARCNET served 1977–1990. What ultimately replaced it?
ARCNET a token-passing bus/star LAN where a token circulated by station address (not physical position), giving predictable performance over coax at 2.5 Mbit/s. Its job passed to Ethernet — but the problem it solved, and the ideas it proved, live on in what replaced it. The standard rests here in the archive. One of 198 technologies here that opened a door and then held it for the next.
