Help us improve your experience.

Let us know what you think.

Do you have time for a two-minute survey?

Guide That Contains This Content
[+] Expand All
[-] Collapse All

    ECMP Load Balancing in the Service Chain

    Traffic flowing through a service chain can be load-balanced by distributing traffic streams to multiple service virtual machines (VMs) that are running identical applications. This is illustrated in Figure 1, where the traffic streams between VM-A and VM-B are distributed between Service VM-1 and Service VM-2. If Service VM-1 goes down, then all streams that are dependent on Service VM-1 will be moved to Service VM-2.

    Figure 1: Load Balancing a Service Chain

    Load Balancing a Service Chain

    The following are the major features of load balancing in the service chain:

    • Load balancing can be configured at every level of the service chain.
    • Load balancing is supported in routed and bridged service chain modes.
    • Load balancing can be used to achieve high availability—if a service VM goes down, the traffic passing through that service VM can be distributed through another service VM.
    • A load balanced traffic stream always follows the same path through the chain of service VM.

    Modified: 2015-09-03