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The Hosts Table enables you to edit the /etc/hosts file through the WebUI or REST interface. Each line in the Hosts file contains one IP address and at least one FQDN/Host name/Domain name. 

When you create a FQDN/Hostname entry in the Host Table, you have the option to enter an IP address to resolve the FQDN/Host name, or allow the SBC to dynamically resolve the FQDN/Host name. The Dynamic Refresh option allows dynamic resolution of the FQDN/Hostname, as well as provides auto-updates in case of dynamic IP changes.

Hosts File Example

127.0.0.1 localhost testux218
192.168.199.15 anon.who.com
192.168.72.99 somemachine.anywhere.com
192.168.99.215 anothermachine.nowhere.net

Usage Examples

The Hosts Table allows applications on the Sonus SBC 1000/2000, such as SIP Signaling Groups, AD, RADIUS, etc. to resolve FQDNs when a DNS server is not reachable. We recommend that only a few, very critical, host-IP pairs be stored on the Sonus SBC 1000/2000.

Another use-case is in a pre-deployment scenario in which an administrator would like to divert traffic by mapping the same FQDN to a different IP address. For example, a Sonus SBC 1000/2000 can communicate with a Lync server under test before it is added to the production network, using the same FQDN, but with a different IP address.

Working with Host Tables

  1. In the WebUI, click the Settings tab.
  2. In the left navigation pane, go to Protocols > IP > Hosts.

Helpful Tip: To delete an entry, simply select the checkbox next to the entry you wish delete, then click the Delete () icon located at the top of the window.

Creating Entries in the Hosts Table

Changes to the Hosts Table are not dynamically applied. Reboot the Sonus SBC 1000/2000 following any modification to the Hosts Table.