Configuring the MTP Restart Feature

This procedure is used to configure the MTP Restart feature with the following commands and parameters.

chg-feat - mtprs=on (to turn on MTP Restart for ANSI signaling links) and itumtprs=on (to turn on MTP Restart for ITU signaling links)
chg-stpopts
- on=mtprsi - to enable the MTP Restart process, or off=mtprsi , to disable the MTP Restart process. When the on=mtprsi parameter is specified for the chg-stpopts command, the value yes is shown in the MTPRSI field of the rtrv-stpopts output. When the off=mtprsi parameter is specified for the chg-stpopts command, the value no is shown in the MTPRSI field of the rtrv-stpopts output. The system default value for this option is no.
- mtprsit - the MTP restart isolation timer - 2000 to 900000 milliseconds. The system default value is 5000 milliseconds.

The MTP restart feature is applied to the signaling links in a linkset by specifying the mtprse=yes parameter of the ent-ls or chg-ls commands. Perform Adding an SS7 Linkset or Changing an SS7 Linkset to specify the mtprse value for a linkset.

If the MTP restart feature is turned on, the alignment of all signaling links is delayed until all the LIMs containing signaling links are in service. This allows the EAGLE to be restored to network service in an orderly fashion and allows all the LIMs containing signaling links to participate in the MTP restart process. The amount of time that the alignment of the signaling links is delayed is dependent on the number of LIMs and DCMs in the EAGLE and is shown in Table 3-8. Table 3-8 shows and example of MTP signaling link alignment delay for LIMs.

Note:

The MTP restart feature can be used on linksets containing non-IP signaling links, IP signaling links with the ipliml2=m2pa parameter, or IPSG signaling links with the ipsg=yes and adapter=m2pa parameters.

Table 3-8 MTP Restart Signaling Link Alignment Delay

Number of LIMs Containing Signaling Links	Signaling Link Alignment Delay
1 to 64	62 seconds
64 to 127	97 seconds
128 to 191	132 seconds
192 or more	167 seconds

If the ANSI MTP restart feature is on (MTPRS = on in the rtrv-feat command output), the mtprsi parameter is set to yes, and at least one ANSI linkset has the mtprse parameter set to yes, the EAGLE starts these level 3 timers; T22, T23, T24, T25, T26, T28, T29, and T30 to control the behavior of the MTP restart feature. These timers control when the TRA and TRW network management messages are sent to the nodes adjacent to the EAGLE when the EAGLE is going through the MTP restart process. When these timers are first introduced to the EAGLE, the system default values for these timers are:

T22 - 10 seconds
T23 - 10 seconds
T24 - 10 seconds
T25 - 30 seconds
T26 - 12 seconds
T28 - 3 seconds
T29 - 60 seconds
T30 - 30 seconds.

To change the values of these timers, perform Changing Level 3 Timers.

If the ITU MTP restart feature is on (ITUMTPRS = on in the rtrv-feat command output), the mtprsi parameter is set to yes, and at least one ITU linkset has the mtprse parameter set to yes, the EAGLE starts these level 3 timers; IT18, IT19, IT20, and IT21 to control the behavior of the ITU MTP restart feature. These timers control when the TRA and TRW network management messages are sent to the nodes adjacent to the EAGLE when the EAGLE is going through the MTP restart process. When these timers are first introduced to the EAGLE, the default values for these timers are:

IT18 - 50 seconds
IT19 - 67 seconds
IT20 - 59 seconds
IT21 - 63 seconds.

To change the values of these timers, perform Changing Level 3 Timers.

If both the ANSI and ITU MTP restart features are on, the mtprsi parameter is set to yes, and at least one ANSI and ITU linkset has the mtprse parameter set to yes, the EAGLE starts the level 3 timers for both the ANSI and ITU MTP restart features to control the behavior of both the ANSI and ITU MTP restart features.

If you wish to use either the ANSI MTP restart feature or the ITU MTP restart feature, enter the rtrv-feat command to verify that either of these features are on.

The entry MTPRS = on in the rtrv-feat command output shows that the ANSI MTP restart feature is on. The entry ITUMTPRS = on in the rtrv-feat command output shows that the ITU MTP restart feature is on. In this example, both features are off.

Note:
The rtrv-feat command output contains other fields that are not used by this procedure. If you wish to see all the fields displayed by the rtrv-feat command, see the rtrv-feat command description in Commands User's Guide.

If both the ANSI and ITU MTP restart feature are on, continue the procedure with 4.

If you are not going to turn the ANSI MTP restart feature on, or if the output of the rtrv-feat command in this step shows that the ANSI MTP restart feature is on (shown by the MPTRS = on entry), continue the procedure with 3.
Turn the ANSI MTP restart feature on by entering this command.
chg-feat:mtprs=on

Note:
Once the ANSI MTP restart feature is turned on with the chg-feat command, it cannot be turned off.
The ANSI MTP restart feature must be purchased before you turn the feature on with the chg-feat command. If you are not sure if you have purchased the ANSI MTP restart feature, contact your Sales Representative or Account Representative.

When this command has successfully completed, this message should appear.
```
rlghncxa03w 06-10-10 11:43:04 GMT EAGLE5 36.0.0
CHG-FEAT: MASP A - COMPLTD
```
Note:
If you are not going to turn the ITUMTP restart feature on, or if the output of the rtrv-feat command in 1 shows that the ITU MTP restart feature is on (shown by the ITUMPTRS = on entry), continue the procedure with 4.
Turn the ITU MTP restart feature on by entering this command.
chg-feat:itumtprs=on

Note:
Once the ITU MTP restart feature is turned on with the chg-feat command, it cannot be turned off.
The ITU MTP restart feature must be purchased before you turn the feature on with the chg-feat command. If you are not sure if you have purchased the ITU MTP restart feature, contact your Sales Representative or Account Representative.

When this command has successfully completed, this message should appear.
```
rlghncxa03w 06-10-10 11:43:04 GMT EAGLE5 36.0.0
CHG-FEAT: MASP A - COMPLTD
```
Enter the rtrv-stpopts command to display the value of the MTPRSI and MTPRSIT fields. This is an example of the possible output.
```
rlghncxa03w 06-10-17 16:02:05 GMT  EAGLE5 36.0.0
STP OPTIONS
-----------------------
MTPRSI              no
MTPRSIT           5000
```
Note:
The rtrv-stpopts command output contains other fields that are not used by this procedure. If you wish to see all the fields displayed by the rtrv-stpopts command, see the rtrv-stpopts command description in Commands User's Guide.

To change the value of the MTPRSI or the MTPRSIT fields, continue the procedure with 5.

If you do not wish to change the value of the MTPRSI or the MTPRSIT fields, continue the procedure with 7.
Change the MTPRSI or MTPRSIT values by entering the chg-stpopts command with one or more of these parameters.
- :on=mtprsi - to enable the MTP restart process.
- :off=mtprsi - to disable the MTP restart process.
- :mtprsit - to specify a new value for the MTP restart isolation timer.
For this example, enter this command.

chg-stpopts:on=mtprsi:mtprsit=7500

For this example, the MTP restart process is enabled and the value of the MTP restart isolation timer is changed.

When the chg-stpopts command has successfully completed, this message should appear.
```
rlghncxa03w 06-10-07 00:22:57 GMT  EAGLE5 36.0.0
CHG-STPOPTS: MASP A - COMPLTD
```
Verify the changes using the rtrv-stpopts command.
This is an example of the possible output.
```
rlghncxa03w 06-10-17 16:02:05 GMT  EAGLE5 36.0.0
STP OPTIONS
-----------------------
MTPRSI             yes
MTPRSIT           7500
```
Note:
The rtrv-stpopts command output contains other fields that are not used by this procedure. If you wish to see all the fields displayed by the rtrv-stpopts command, see the rtrv-stpopts command description in Commands User's Guide.

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 3-6 Configuring the MTP Restart Feature