SLB Tunnel Configuration

The Oracle Communications Subscriber-Aware Load Balancer (SLB) sends and receives signaling messages to and from clustered OCSBCs through an IP-in-IP tunnel. The SLB requires one tunnel per interface.

Use the following procedure to perform required SLB-side tunnel configuration. Completion of tunnel configuration is accomplished on the clustered OCSBCs as described in OCSBC Tunnel Configuration.

From superuser mode, use the following ACLI command sequence to access tunnel-config configuration mode. While in this mode, you partially configure the tunnel-config configuration element.

ORACLE# configure terminal
ORACLE(configure)# system
ORACLE(system)# network-interface
ORACLE(network-interface)# tunnel-config
ORACLE(tunnel-config)# ?
local-ip-address     tunnel local IP address
port                 local & remote control ports
protocol             tunnel control transport protocol
tls-profile          tunnel control TLS profile
select               select tunnel to edit
no                   delete tunnel
show                 show tunnel
done                 write tunnel information
quit                 quit out of configuration mode
exit                 return to previous menu
ORACLE(tunnel-config)#

Use the local-ip-address parameter to specify the IP address at the SLB end of the tunnel.
As the terminus for all tunnels from the clustered OCSBCs — and never the tunnel originator — only the local address is configured on the SLB.

Note:
This address also supports the exchange of CCP messages.
```
ORACLE(tunnel-config)# local-ip-address 182.16.204.210
ORACLE(tunnel-config)#
```
Use the port parameter to specify the port used to send and receive CCP 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.
The only protocol supported for this release is UDP.
```
ORACLE(tunnel-config)# protocol UDP
ORACLE(tunnel-config)#
```
Use done, exit, and verify-config to complete configuration of this tunnel-config configuration element.
Repeat Steps 1 through 6 to configure additional tunnel-config configuration elements.