Although the Cisco LocalDirector 400 Series and Cisco CSS 11500 Series both offer server load balancing (SLB) features, there are several differences between the two devices. The most notable is the difference in International Organization for Standardization (ISO) layers where the devices operate. The Cisco LocalDirector offers load balancing based on Layer 4 information, and the Cisco CSS 11500 Series operates at Layers 4 through 7. This paper provides guidance when migrating existing Cisco LocalDirector configurations to the Cisco CSS 11500 Series.
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