ECMP Support in Service Chain
Equal-cost multipath (ECMP) can be used to distribute traffic across VMs.
Service Chain with Equal-Cost Multipath in Active-Active Mode
To support ECMP in the service chain, create multiple port tuples
within the same service instance. The labels should be the same for
the VM ports in each port tuple. For example, if port tuple 1 uses
the labels left and right, then port tuple 2 in the same service instance should also use
the labels left and right for its ports.
When there are multiple port tuples, the default mode of operation
is active-active.
Service Chain with Health Check
Service chain Version 2 also allows service instance health check configuration on a per interface label. This is used to monitor the health of the service.
For more information about the service instance health check, see Service Instance Health Checks.