SBC Tunnel Configuration

Configuring the properties of the IP-in-IP tunnel on the Oracle Communications Session Border Controller (SBC) is a matter of configuring the local IP address, remote IP address, and specifying transport layer and application layer protocol support.

The following example uses a tunnel named sipSignaling, which was initially and partially configured on the Oracle Communications Subscriber-Aware Load Balancer (Subscriber-Aware Load Balancer). Note in the following configuration that the value of remote-ip-address parameter must agree with the value which was previously set with the local-ip-address parameter on the Subscriber-Aware Load Balancer. The complementary configuration performed on the Subscriber-Aware Load Balancer enables tunnel establishment between the SBC and the Subscriber-Aware Load Balancer.

From superuser mode, use the following ACLI command sequence to access tunnel-config configuration mode. While in this mode, you perform required Subscriber-Aware Load Balancer tunnel configuration.

ORACLE# configure terminal
ORACLE(configure)# system
ORACLE(system)# network-interface
ORACLE(network-interface)# tunnel-config
ORACLE(tunnel-config)# ?
name                  tunnel name
local-ip-address      tunnel local IP address
remote-mac-address    tunnel remote mac address
remote-ip-address     tunnel remote IP address
application           application protocol for this tunnel
port                  tunnel local & remote control ports
protocol              tunnel control transport protocol
tls-profile           tunnel control TLS profile
traffic-policy								Name of traffic policy that 
																						applies to this tunnel 
select                select tunnel to edit
no                    delete tunnel
show                  show tunnel
done                  write tunnel information
exit                  return to previous menu
ORACLE(tunnel-config)#

Use the name command to provide a unique identifier for this tunnel instance.
```
ORACLE(tunnel-config)# name sipSignaling
ORACLE(tunnel-config)#
```
Use the local-ip-address parameter to specify the IP address at the SBC end of the tunnel.
Note:
This address also supports the exchange of CCP messages.
```
ORACLE(tunnel-config)# local-ip-address 1.1.1.100
ORACLE(tunnel-config)#
```
Ignore the remote-mac-address parameter which is not required for tunnel configuration.
Use the remote-ip-address parameter to specify the IP address at the Subscriber-Aware Load Balancer end of the tunnel.
Note:
This address also supports the exchange of CCP messages.
```
ORACLE(tunnel-config)# remote-ip-address 182.16.204.210
ORACLE(tunnel-config)#
```
Use the port parameter to specify the port used to send and receive cluster control messages.
```
ORACLE(tunnel-config)# port 4444
ORACLE(tunnel-config)#
```
Use the protocol parameter to specify the transport protocol used in support of cluster control messages.
Supported transport protocol is UDP (the recommended default).
```
ORACLE(tunnel-config)# protocol UDP
ORACLE(tunnel-config)#
```
Use the application parameter to specify the application protocol supported by this tunnel.
Specify the SIP protocol.
```
ORACLE(tunnel-config)# application SIP
ORACLE(tunnel-config)#
```
Use traffic-policy to enter the name of the traffic policy that applies to this tunnel (1-128 characters long) as configured on the Subscriber-Aware Load Balancer.
This configuration is a per-tunnel configuration. Once configured, it will be passed on via the CCP protocol to Subscriber-Aware Load Balancer in Heartbeat messages.

The CCD task running on the Subscriber-Aware Load Balancer will extract the traffic policy name and will find the matching traffic-policy configuration on the Subscriber-Aware Load Balancer.
```
ORACLE(tunnel-config)# traffic-policy <pattern>
ORACLE(tunnel-config)#
```
Use done, exit, and verify-config to complete configuration of this tunnel-config configuration element.
Repeat Steps 1 through 9 to complete tunnel configuration on other SIP interfaces as required.