등나무

Changes Needed to Aid 802.11n Adoption.

Joe & Soohy 2007. 3. 30. 13:19

802.11n is well on its way to being the next Wi-Fi standard. Last week, draft 2.0 of 802.11n was approved by an IEEE workgroup and could find its way into products as soon as later this year.

Heralded for offering faster throughput − between 100 and 200 Mbps, and in some configurations up to 600 Mbps − and better range than 802.11a, 802.11b and 802.11g, 802.11n is a significant step forward for Wi-Fi, experts said in a SearchNetworking.com report. "This really is a big deal," said David Cohen, director of product marketing for wireless vendor Trapeze Networks.

But with increased throughput, up to four to five times that of 802.11g, 802.11n could result in clogged central switches and controllers that can't handle the huge jump in traffic loads. Since every packet sent over 802.11n must pass through a switch or controller, that extra traffic has the potential to clog the gear, creating logjams and delay. "As you migrate to 11n," Cohen said, "you can easily overwhelm the central switch or LAN controller."

Certain vendors, like Trapeze, make equipment that allows traffic to bypass the switch and LAN controller and flow directly through the access point. Others vendors, which do not offer that functionality, will play catch up. "A lot of networks are going to have to upgrade their central switch and controller because they weren't built to handle that traffic," Cohen said.

Craig Mathias, principal with Farpoint Group, added that enterprises will also have to upgrade to GigE switches to accommodate the additional throughput. Another issue that enterprises should be concerned about is 802.11n's questionable compatibility with 802.11b/g legacy equipment, according to Forrester Research analyst Chris Silva.

Wi-fi 무선 차기 규격이 802.11n 이라는군. 우리가 현재 쓰는게 802.11a/b/g 이쥐. 집에서 g로 무선 공유기 걸어놓으면 종나 빠른데, psp가 b까지만 인식해서...ㄱ-
암튼 그렇다네~ 승재맨과 종오맨은 잘 알아 두게나~