Configuring the Origin-Based MTP Routing SCCP OPC Option

This procedure is used to configure the option that determines which of the three OPC values can be used to route SCCP messages for the Origin-Based MTP Routing feature. The option is configured with the mobrsccpopc parameter of the chg-sccpopts command. The mobrsccpopc parameter has three values:

mtp – The original OPC in the message is used as the OPC value to use for routing the SCCP message.

sccp – If the CGPA portion of the message is route-on-dpcssn, the point code in the CGPA portion of the message, if the CGPA portion of the message is route-on-dpcssn, is used as the OPC value to use for routing the SCCP message. If the CGPA portion of the message is route-on-gt, the MTP option, the original OPC in the message, is used as the OPC value to use for routing the SCCP message.

tpc – The EAGLE 5 ISS’s true point code is used as the OPC value to use for routing the SCCP message.

If traffic originated from the Eagle, (for example, a UDTS message) then the incoming linkset name (ilsn parameter) of the exception route is not used in evaluating which exception route to use, if any. This is because since the traffic was generated by the Eagle it did not enter through any linkset.

The current value of the mobrsccpopc parameter is shown in the MOBRSCCPOPC field in the rtrv-sccpopts command output.

The mobrsccpopc parameter can be specified with the chg-sccpopts command, and the MOBRSCCPOPC field in the rtrv-sccpopts command output is displayed only if the Origin-Based MTP Routing feature is enabled and turned on. If the MOBRSCCPOPC field is not shown in the rtrv-sccpopts command output, perform the Activating the Origin-Based MTP Routing Feature procedure to enable and turn on the Origin-Based MTP Routing feature.

Display the existing value for the mobrsccpopc parameter by entering the rtrv-sccpopts command.
If the Origin-Based MTP Routing feature is not enabled and turned on, this is an example of the possible output.
```
rlghncxa03w 06-10-17 16:02:05 GMT  EAGLE5 36.0.0

SCCP OPTIONS
-------------------------------
CLASS1SEQ                   off
DFLTGTTMODE                CdPA
```
If the Origin-Based MTP Routing feature is enabled and turned on, this is an example of the possible output.
```
rlghncxa03w 06-10-17 16:02:05 GMT  EAGLE5 36.0.0
SCCP OPTIONS
-------------------------------
CLASS1SEQ                   off
DFLTGTTMODE                CdPA
MOBRSCCPOPC                 MTP
```
Note:
The rtrv-sccpopts command output contains other fields that are not used by this procedure. If you wish to see all the fields displayed by the rtrv-sccpopts command, see the rtrv-sccpopts command description in the Commands Manual.

If the MOBRSCCPOPC field is not shown in the rtrv-sccpopts command output, perform the Activating the Origin-Based MTP Routing Feature procedure to enable and turn on the Origin-Based MTP Routing feature.
Change the mobrsccpopc parameter value.

The value of the mobrsccpopc parameter must be different from the value shown in the rtrv-sccpopts output in step 1.
If you wish to use original OPC in the message is used as the OPC value to use for routing the SCCP message, enter this command.

chg-sccpopts:mobrsccpopc=mtp

If you wish to use the point code in the CGPA portion of the message is used as the OPC value to use for routing the SCCP message (when the CGPA portion of the message is route-on-dpcssn), enter this command.

chg-sccpopts:mobrsccpopc=sccp

If you wish to use the EAGLE 5 ISS’s true point code is used as the OPC value to use for routing the SCCP message, enter this command.

chg-sccpopts:mobrsccpopc=tpc
```
rlghncxa03w 06-10-07 00:22:57 GMT  EAGLE5 36.0.0
CHG-SCCPOPTS: MASP A - COMPLTD
```
Verify the changes using the rtrv-sccpopts command.
This is an example of the possible output.
```
rlghncxa03w 06-10-17 16:02:05 GMT  EAGLE5 36.0.0
SCCP OPTIONS
-------------------------------
CLASS1SEQ                   off
DFLTGTTMODE                CdPA
MOBRSCCPOPC                 MTP
```
Note:
The rtrv-sccpopts command output contains other fields that are not used by this procedure. If you wish to see all the fields displayed by the rtrv-sccpopts command, see the rtrv-sccpopts command description in the Commands Manual.

Back up the new changes using the chg-db:action=backup:dest=fixed command.

These messages should appear, the active Maintenance and Administration Subsystem Processor (MASP) appears first.

BACKUP (FIXED) : MASP A - Backup starts on active MASP.
BACKUP (FIXED) : MASP A - Backup on active MASP to fixed disk complete.
BACKUP (FIXED) : MASP A - Backup starts on standby MASP.
BACKUP (FIXED) : MASP A - Backup on standby MASP to fixed disk complete.

Figure 3-44 Configuring the Origin-Based MTP Routing SCCP OPC Option