Steps to Configure Multicast Traffic for H-REAP APs
Question
Corporation XYZ has many retail branch sites that are using H-REAP APs.
XYZ wishes to send multicast traffic to the branch sites on WLAN A, which is centrally switched.
It also wishes to ensure that multicast traffic is not sent to sites that do not request it.
Which two steps must be taken in order to make this work? (Choose two.)
Answers
Explanations
Click on the arrows to vote for the correct answer
A. B. C. D.CD.
In this scenario, Corporation XYZ has retail branch sites that are using H-REAP APs, and it wishes to send multicast traffic to the branch sites on WLAN A, which is centrally switched. Additionally, they want to ensure that multicast traffic is not sent to sites that do not request it.
To achieve this, the following two steps should be taken:
Enable IGMP Snooping: IGMP Snooping is a feature that is used to limit the forwarding of multicast traffic within a VLAN. By enabling IGMP Snooping, switches can learn which hosts are interested in receiving multicast traffic and which hosts are not. When IGMP Snooping is enabled, the switch listens for IGMP messages sent by hosts to join or leave multicast groups. Based on the information received in these messages, the switch creates a multicast forwarding table, which is used to forward multicast traffic only to those ports that have requested it. In this scenario, enabling IGMP snooping will ensure that multicast traffic is only sent to branch sites that have requested it, and not to sites that do not require it.
Enable Multicasting in Multicast Mode: Enabling multicasting in multicast mode is the second step that needs to be taken. This can be done by configuring the wireless LAN controller (WLC) to use multicast mode when sending multicast traffic to the branch sites on WLAN A. Multicast mode is the preferred mode when sending multicast traffic to wireless clients, as it uses Internet Group Management Protocol (IGMP) to manage multicast group membership. By enabling multicasting in multicast mode, the WLC will be able to send multicast traffic to the branch sites on WLAN A, while also ensuring that multicast traffic is only sent to those sites that have requested it.
Therefore, the correct answers are B. Disable IGMP snooping and D. Enable IGMP snooping.
