Edit post Follow this blog Administration + Create my blog
Cisco & Cisco Network Hardware News and Technology

Cisco 3800 AP and Multigigabit Ethernet (mGig)

August 30 2018 , Written by Cisco & Cisco Router, Network Switch Published on #Networking, #Cisco Technology - IT News, #IT, #Cisco Wireless - Cisco Wireless AP

Multigigabit Ethernet (mGig), N-BASET and 802.11bz are all methods by which faster speeds can be realized (faster than 1G) using existing infrastructure wiring such as CAT-5e. The goal is to deliver up to 5 times the speed in the Enterprise without replacing existing cable structure.

Note: Although the AP 2800 does not directly support mGig, these are ideal switches for providing the power required by the AP 2800 as well.

Here are the recommended mGig switches and PoE solutions for the AP 3800.

Figure1. Cisco line of mGig capable switches

Ideally a switch supporting IEEE 802.3bz (mGig, which is also referred to as N-BASET) will deliver the fastest Ethernet using older cable systems such as CAT-5 and deliver +30W for newer PoE devices.

Figure2. Cisco Multigigabit enables speeds over 1G on conventional CAT5e cable systems

In regards to cabling structure and Cisco Multigigabit Ethernet:

  1. Data rates up to 1G requires 62.5–MHz bandwidth (Cat 5e is 100 MHz)
  2. Data rates up to 2.5G requires 100MHz bandwidth (Cat 5e is 100 MHz)
  3. Data rates up to 5G requires 200MHz bandwidth, which is more than the specified Cat 5e 100MHz bandwidth, but within the Cat 6 cable

The main point is that 5G operations over Cat 5e may have issues using certain cable configurations due to the fact we are using Cat 5e cable beyond the specification.

Figure3. Cisco Multigigabit cable support at rates up to 5G

 *Watch for cross-talk issues in bundles or when cables are in same pipe. Keep lengths of CAT-5e between 30-50m or below when using dense cable bundles; for example, cables in a dense area like a pipe or places where five or more cables are tied in a bundle.

Figure4. Cisco Multigigabit distance limitations


Figure5. Cisco Multigigabit distance limitations

Info from https://www.cisco.com/c/en/us/td/docs/wireless/controller/technotes/8-3/b_cisco_aironet_series_2800_3800_access_point_deployment_guide/b_cisco_aironet_series_2800_3800_access_point_deployment_guide_chapter_0101.html

More Related

Approved Antennas for Use with Cisco 2800 and 3800 APs

FAQ’s: Cisco Aironet Series 2800/3800 Access Point Deployment Guide

How to Help Wireless Customers Select the Right Wireless Solutions?

The Smartest Access Point? The New Aironet 4800 Series

Here Comes the Best Cisco Indoor Access Point for You

802.11n and 802.11ac Wi-Fi Antenna Options for Cisco Indoor/Outdoor APs

Benefits of Migrating to Latest Cisco Aironet Access Points

Aironet 2800 vs. Aironet 3800 SERIES ACCESS POINTS

How to Choose the Right Access Point: Cisco 2800 or 3800?

Share this post
To be informed of the latest articles, subscribe:
Comment on this post