Clustering guide is not clear

[m3dbedb]

There are too many ports configured in page https://github.com/nats-io/nats.docs/blob/master/running-a-nats-service/configuration/clustering/README.md

Server A - the 'seed server'

nats-server -p 4222 -cluster nats://localhost:4248 --cluster_name test-cluster

Server B

nats-server -p 5222 -cluster nats://localhost:5248 -routes nats://localhost:4248 --cluster_name test-cluster

Check the output of the server for the selected client and route ports.

Server C

nats-server -p 6222 -cluster nats://localhost:6248 -routes nats://localhost:4248 --cluster_name test-cluster

Check the output of the server for the selected client and route ports.

I suppose one server to have 1 port. So three servers is 3 ports. Why there are 6 ports in quoted text?

[m3dbedb]

Here is my working configuration:

server_name: nats1
port: 4222
cluster {
  name: test-nats
  port: 6222
  routes: [
    nats-route://192.168.0.20:6222
    nats-route://192.168.0.30:6222
  ]
}

server_name: nats2
port: 4222
cluster {
  name: test-nats
  port: 6222
  routes: [
    nats-route://192.168.0.10:6222
    nats-route://192.168.0.30:6222
  ]
}

server_name: nats3
port: 4222
cluster {
  name: test-nats
  port: 6222
  routes: [
    nats-route://192.168.0.10:6222
    nats-route://192.168.0.20:6222
  ]
}