New Features; Auxiliary Ethernet Port - Cisco Aironet 1850 Series Deployment Manual

Revised: January 25, 2017,

New features

Auxiliary Ethernet Port

AP 1850 has an additional Ethernet port labeled "AUX", that is, Auxiliary port used for LAG connection to the Ethernet switch
supporting LAGB or for downstream traffic. The Ethernet uplink port to the controller on the AP 1850 is labeled "PoE".
Link Aggregation for the AP 1850
Many Ethernet switches support links up to 1 Gbps throughput. However, with newer Wave-2 access points such as the AP 1850, it
is possible (or at least the potential exists) that the AP traffic could exceed 1 Gbps. It is not likely to occur until MU-MIMO and 4
spatial stream Wave-2 clients become more commonplace.
To address this potential issue, we have implemented Link Aggregation into the Cisco AP 1850.
Link Aggregation is the only method to gain higher throughput on AP 1850 as it does not support multi-gigabit technologies such as
NBase-T.
For more on multigigabit technology, see the following URL:
http://www.cisco.com/c/dam/en/us/solutions/collateral/enterprise-networks/catalyst-multigigabit-switching/multigigabit-ethernet-technology.pdf
It is expected that future Wave-2 access points may support multigigabit functionality.
Note
Cisco Switches Supporting Link Aggregation
The following Cisco switching series support LAG with the AP 1850:
• Catalyst 3850 / all models (non-CA mode)
• Catalyst 3650 / all models (non-CA mode)
• Catalyst 4500/Sub-8E
Enabling link aggregation on the AP 1850
Procedure
Step 1 Enable the controller to support LAG for all APs using the command:
config ap lag-mode support enable
This will NOT result in a reset and reboot of the APs that support LAG.
To disable the LAG on all APs, use the command:
config ap lag-mode support disable
This will result in a reset and reboot of all the APs that support LAG.