To address bandwidth saturation on the data interface of a Citrix ADC SDX, which action should the administrator take?

To address bandwidth saturation on the data interface of a Citrix ADC SDX, which action should the administrator take?

• A. Add a second interface to each Citrix ADC VPX instance.
• B. Configure a failover interface set on each Citrix ADC VPX instance.
• C. Configure LACP on the SDX for the data interface.
• D. Configure LACP on the SDX for management interface.

Answer: (C)

The action relies on using LACP to create a single, higher-bandwidth data path by aggregating multiple physical links. Configuring LACP on the SDX for the data interface lets the SDX form a port-channel across several physical uplinks, so data traffic from each VPX can be spread across all links. This increases total usable bandwidth and also provides redundancy if one link fails, directly addressing saturation on the data path. Adding a second interface to each VPX or configuring a failover set doesn’t increase the actual data throughput available to the VPX traffic; they either add separate paths without automatic aggregation, or focus on failover rather than increasing usable bandwidth. LACP on the management interface pertains to management traffic, not user data, so it won’t resolve data-path saturation.

The action relies on using LACP to create a single, higher-bandwidth data path by aggregating multiple physical links. Configuring LACP on the SDX for the data interface lets the SDX form a port-channel across several physical uplinks, so data traffic from each VPX can be spread across all links. This increases total usable bandwidth and also provides redundancy if one link fails, directly addressing saturation on the data path.

Adding a second interface to each VPX or configuring a failover set doesn’t increase the actual data throughput available to the VPX traffic; they either add separate paths without automatic aggregation, or focus on failover rather than increasing usable bandwidth. LACP on the management interface pertains to management traffic, not user data, so it won’t resolve data-path saturation.