Canadian firm Nortel Networks is today holding an auction in New York for its optical networking and carrier ethernet business, Metro Ethernet Networks. Nortel, which was North AmericaÔÇÖs largest telecoms equipment maker, entered bankruptcy protection in January, before announcing in June that it no longer planned to continue operations and would sell off all of its business units. The Toronto, Ontario-based company has been selling off various operations since then, and has raised more than $2 billion to date. Assets have already been sold to Japanese electronics manuf