New wireless standard – 802.11ac supports upto 6.8 Gbps wireless speed.
Mostly cables used between wireless access points and switches are Cat5e, which are limited to 1Gbps speed. Because of this, we cannot get full advantage of 802.11ac (Wave 2) and subsequent technologies without upgrading the cabling infrastructure.
We can see this situation in following diagram.
This creates a market need for supporting speeds that are faster than 1Gbps on existing Category 5e cables. So, the solution for this situation is NBase-T technology.
NBase-T technology work in conjunction with standards bodies to standardise speeds greater than 1Gbps on existing Category 5e.
Following standards are used for wireless :
802.11a, 802.11b > 11 Mbps
802.11g > 54 Mbps
Currently using –
802.11n > 450 Mbps
802.11ac (wave 1) > 1 Gbps
802.11ac (wave 2) > 3.5 Gbps / 6.8 Gbps
10 Gbps / 100 Gbps
The benefits of Multi Gigabit Ethernet Technology can be grouped into three different areas:
- Multiple speeds: Cisco MultiGigabit technology supports auto-negotiation of multiple speeds on switch ports. The supported speeds are 100 Mbps, 1 Gbps, 2.5 Gbps, and 5 Gbps on Cat 5e cable and up to 10 Gbps over Cat 6a cabling.
- Cable type: The technology supports a wide range of cable types including Cat 5e, Cat 6, and Cat 6a or above.
- POE power: The technology supports POE (15.4W), POE+ (30W), and UPOE (60W) for all the supported speeds and cable types.
The Cable types and Speeds supported with Cisco MultiGigabit Ethernet Technology :
|Cable Type||1G||2.5 Gbps||5 Gbps||10 Gbps|
|Cat 6||✔️||✔️||✔️||✔️ (55m)|
➔ For Detailed comparison check below chart from http://www.cisco.com.