12. Network Configuration

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Starting with version 2.7, the sip:provider CE uses a dedicated network.yml file to configure the IP addresses of the system. The reason for this is to be able to access all IPs of all nodes for all services from any particular node in case of a distributed system on one hand, and in order to be able the generate /etc/network/interfaces automatically for all nodes based on this central configuration file.

12.1. General Structure

The basic structure of the file looks like this:

hosts:
  self:
    role:
      - proxy
      - lb
      - mgmt
    interfaces:
      - eth0
      - lo
    eth0:
      ip: 192.168.51.213
      netmask: 255.255.255.0
      type:
        - sip_ext
        - rtp_ext
        - web_ext
    lo:
      ip: 127.0.0.1
      netmask: 255.255.255.0
      type:
        - sip_int
        - web_int
        - ha_int

In CE systems, there is only one host entry in the file, and it’s always named self.

12.2. Available Host Options

There are three different main sections for a host in the config file, which are role, interfaces and the actual interface definitions.

role: The role setting is an array defining which logical roles a node will act as. Possible entries for this setting are:
- mgmt: This entry means the host is acting as management node for the platform. In a sip:provider CE, this option must always been set. The management node exposes the admin and csc panels to the users and the APIs to external applications and is used to export CDRs.
- lb: This entry means the host is acting as SIP load-balancer for the platform. In a sip:provider CE, this option must always been set. The SIP load-balancer acts as an ingress and egress point for all SIP traffic to and from the platform.
- proxy: This entry means the host is acting as SIP proxy for the platform. In a sip:provider CE, this option must always been set. The SIP proxy acts as registrar, proxy and application server and media relay, and is responsible for providing the features for all subscribers provisioned on it.
interfaces: The interfaces setting is an array defining all interface names in the system. The actual interface details are set in the actual interface settings below.
<interface name>: After the interfaces are defined in the interfaces setting, each of those interfaces needs to be specified as a separate setting with the following options:
- ip
- netmask
- advertised_ip
- type