Cisco Cisco 5508 Wireless Controller Referencia técnica
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Chromecast Deployment Guide, Release 7.6
Deployment Considerations
Deploying Chromecast Devices and Users on a Single VLAN
When deploying Chromecast over network, it is important that both the client and Chromecast device
offering the service are on the same VLAN. For the wireless network, this means ensuring each client
user is on the same back-end interface in the controller.
offering the service are on the same VLAN. For the wireless network, this means ensuring each client
user is on the same back-end interface in the controller.
For a large-scale deployment, using a single VLAN may be impossible. For information about how to
have clients on one VLAN while the Chromecast devices are on another, see
have clients on one VLAN while the Chromecast devices are on another, see
section.
Enabling Multicast Support
From the Controller tab, choose the Multicast link on the left-hand menu. Enable Global Multicast
Mode and IGMP Snooping. Multicast and snooping mechanisms are outside the scope of this
document. For more background information on these topics, see
Mode and IGMP Snooping. Multicast and snooping mechanisms are outside the scope of this
document. For more background information on these topics, see
Configuring the Multicast Distribution Mode to Access Points
The Cisco Unified Wireless Network (CUWN) supports two methods of multicast distribution to access
points (APs) associated with the controller. In both the modes, the original multicast packet from the
wired network is encapsulated inside a Layer 3 CAPWAP packet sent via either CAPWAP Unicast or
Multicast to the AP. Since the traffic is CAPWAP encapsulated, APs do not have to be on the same
VLAN as the client Chromecast traffic.
points (APs) associated with the controller. In both the modes, the original multicast packet from the
wired network is encapsulated inside a Layer 3 CAPWAP packet sent via either CAPWAP Unicast or
Multicast to the AP. Since the traffic is CAPWAP encapsulated, APs do not have to be on the same
VLAN as the client Chromecast traffic.
The two methods of Multicast distribution are compared here:
Multicast-Multicast Distribution Mode
Multicast-multicast mode is the recommended option for scalability and wired bandwidth efficiency
reasons.
reasons.
Note
Multicast-multicast mode is required for the 2500-Series Wireless LAN Controller.
239.255.255.250
CAPWAP
239.255.255.250
CAPWAP
239.X.X.X
239.255.255.250
“Multicast-Unicast” Mode
“Multicast-Multicast” Mode
CAPWAP
CAPWAP Tunnel
CAPWAP
CAPWAP
CAPWAP
CAPWAP
CAPWAP
CAPWAP
CAPWAP
Multicast Tunnel