vpp-dataplane/docs/services.md

Services features

Services in calicovpp support different load balancing types, and can use specific fields in hash calculation for load balancing.

This is implemented using service annotations, here is an example:

apiVersion: v1
kind: Service
metadata:
  name: my-service
  annotations:
    "cni.projectcalico.org/vppLBType": "maglev"
    "cni.projectcalico.org/vppHashConfig": "symmetric, iproto, dstport, srcport"

• Possible values for vppLBType are ecmp, maglev, maglevdsr maglev implements consistent hashing for better redundancy and scalability. maglebdsr offers Direct Server Return to accelerate server response times.
• vppHashConfig is a list of elements from srcport, dstport, srcaddr, dstaddr, iproto, reverse, symmetric, that the forwarding of packets is based on.