Campus lan and Wireless lan solution Design Guide

N+1 HA 
Stack 
Redundancy 
LAG 
SMUs, APSPs, 
and APDPs 
Cisco Catalyst 
9800-80 
Yes 
Yes 
— 
Yes 
Yes 
Cisco Catalyst 
9800-40 
Yes 
Yes 
— 
Yes 
Yes 
Cisco Catalyst 
9800-L 
Yes 
Yes 
— 
Yes 
Yes 
Cisco Catalyst 
9800 embedded 
on Cisco Catalyst 
9000 Series 
Switches 
No 
No 
Yes 
— 
Yes 
Cisco Catalyst 
9800 Embedded 
on Catalyst 9100 
Series Access 
Points (EWC) 
Active/standby 
control plane with 
local switching 
data plane 
No 
— 
— 
Yes 
Cisco Catalyst 
9800-CL for
Public Cloud 
No 
Yes 
— 
— 
Yes 
Cisco Catalyst 
9800-CL for 
Private Cloud 
Yes 
Yes 
— 
Via hypervisor 
Yes 
Multicast support 
Video and voice applications continue to grow as smartphones, tablets, and PCs are added to wireless 
networks in all aspects of our daily life. In each of the wireless design models, the multicast support to which 
users are accustomed on a wired network is available wirelessly. Multicast is required in order to enable the 
efficient delivery of certain one-to-many applications, such as video and push-to-talk group communications. 
By extending the support of multicast beyond that of the campus and data center, mobile users can now use 
multicast-based applications.
The campus WLAN supports multicast transmission for the onsite controller using multicast-multicast mode, 
which uses a multicast IP address in order to more efficiently communicate multicast streams to APs that have 
wireless users subscribing to a particular multicast group. In this guide, multicast-multicast mode is supported 
by using the Cisco Catalyst 9800 Series WLAN Controllers. 

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Remote sites that use Cisco FlexConnect local switching mode can also benefit from the use of multicast-based 
applications. Multicast in remote sites leverages the underlying WAN and LAN support of multicast traffic. When 
combined with APs in Cisco FlexConnect mode using local switching, subscribers to multicast streams are 
serviced directly over the WAN or LAN network with no additional overhead being placed on the WLAN 
controller. 
Guest wireless 
Using the existing campus wired and wireless infrastructure for guest access provides a convenient, cost-
effective way to offer Internet access for visitors and contractors. Multiple methods of providing guest wireless 
access are supported, depending on the deployment.