When implementing interface groups, how are the IP addresses sourced via DHCP for wireless clients?

Sourcing through only the primary interface would defeat the purpose of an interface group's load-balancing capabilities and could lead to a single point of failure or congestion.

Cisco Wireless LAN Controllers (WLCs) utilize a round-robin approach for DHCP address sourcing when interface groups are employed. This method distributes DHCP requests evenly across all member interfaces within the group, optimizing resource utilization and preventing a single interface from becoming a bottleneck.

While the interface group definition specifies which interfaces are part of the group, it does not directly define how IP addresses are sourced; it is the operational mechanism of the WLC that determines the sourcing method.

Sourcing through the interface receiving the first response is not the standard or default behavior for DHCP sourcing via interface groups on Cisco WLCs; round-robin is the implemented method for load distribution.