Learn how to reduce the bandwidth consumed by Cisco Wireless LAN Controllers (WLCs) in a Mobility group with these expert tips. Enable mobility group Unicast Messaging and global unicast messaging to optimize bandwidth usage.

Question

An engineer has eight WLCs in a mobility group and must reduce the bandwidth consumed. Which two configuration items achieve this result? (Choose two.)

A. global multicast mode
B. mobility group unicast messaging
C. global unicast messaging
D. mobility group multicast messaging
E. global symmetric mobility messaging

Answer

B. mobility group unicast messaging
C. global unicast messaging

Explanation

The question asks how to reduce the bandwidth consumed by eight Wireless LAN Controllers (WLCs) in a mobility group. The mobility group is a collection of WLCs that share information about roaming clients and participate in the mobility handoff process.

Two configuration items can help reduce the bandwidth consumed in this scenario:

1. Mobility Group Unicast Messaging (B): By default, WLCs in a mobility group use multicast messaging to communicate with each other. However, multicast traffic can consume a significant amount of bandwidth. Enabling unicast messaging for the mobility group can help reduce this bandwidth usage. With unicast messaging, WLCs send messages directly to each other using unicast traffic instead of multicast traffic.
2. Global Unicast Messaging (C): Similar to mobility group unicast messaging, global unicast messaging allows WLCs to communicate with each other using unicast traffic instead of multicast traffic. However, global unicast messaging is applied to all WLCs in the network, not just those in a specific mobility group. Enabling global unicast messaging can help reduce the overall bandwidth consumed by WLCs.

Note that the other options are not relevant to reducing bandwidth consumption:

1. Global Multicast Mode (A): This option sets the multicast mode for all WLCs in the network. It does not affect the bandwidth consumed by the mobility group.
2. Mobility Group Multicast Messaging (D): This option sets the multicast mode for the mobility group. It does not reduce the bandwidth consumed by the mobility group.
3. Global Symmetric Mobility Messaging (E): This option sets the mobility messaging mode for all WLCs in the network. It does not reduce the bandwidth consumed by the mobility group.

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