1. Database Administration - IP7 User's Guide
  2. IPSG M2PA and M3UA Configuration Procedures
  3. Changing an M2PA Timer Set

Changing an M2PA Timer Set

This procedure is used to change the values of the M2PA timers in an M2PA timer set using the chg-m2pa-tset command. The M2PA timers are used to control the behavior of the signaling link assigned to an M2PA association (an association containing the M2PA adapter layer - adapter=m2pa) during signaling link alignment and proving, and during times of transmit congestion.

The EAGLE contains 20 M2PA timer sets. One of these timer sets is assigned to an M2PA association using the m2patset parameter of either the ent-assoc or chg-assoc command. If the m2patset parameter is not specified with the ent-assoc command, or with the chg-assoc command if the adapter layer for that association is being changed to M2PA, timer set 1 is automatically assigned to the association.

Caution:

Changing an M2PA timer set may affect the performance of any associations using the timer set being changed.

The chg-m2pa-tset command uses these parameters.

:tset – The M2PA timer set being changed, 1 - 20.

:srctset – The timer values in an existing M2PA timer set can be copied to another M2PA timer set, specified by the tset parameter. The srctset parameter specifies the timer set that is to be copied. If the srctset parameter is specified, no other timer values can be specified, The srctset parameter value cannot be the timer set specified by the tset parameter.

:ver – The M2PA version, either Draft 6 (ver=d6) or RFC (ver=rfc).

Note:

The definitions of timers T1 and T3 for the Draft 6 version are different from the RFC version. The T2 timer applies only to the RFC version. The definitions of timers T4N, T4E, T5, T6, T7, T16, T17 and T18 for are the same for the Draft 6 version and the RFC version.

The timer parameter descriptions and values are shown in Table 6-13.

Table 6-13 M2PA Timers

Timer Draft 6 Timer Name RFC Timer Name Definition Value (in msecs) DRAFT 6 System Default Value (in msecs) RFC System Default Value (in msecs)

:t1

N/A

Ready Timer

The amount of time after proving the M2PA adapter layer waits to receive a Link Status Ready message from the peer.

1000 -

350000

N/A

300000

:t1

Alignment Timer

N/A

The amount of time the M2PA adapter layer waits to receive a Link Status Alignment message from the peer.

1000 -

350000

10000

N/A

:t2 *

N/A

Not Aligned Timer

The the amount of time the M2PA adapter layer waits to receive a Link Status Alignment/Link Status Proving message after sending a Link Status Alignment message. Timer T2 is not used in M2PA Draft 6 timer sets.

5000 -

150000

N/A

20000

:t3

N/A

Alignment Timer

The amount of time the M2PA layer waits to receive a Link Status Alignment message from the peer.

1000 -

60000

N/A

2000

Ready Timer

N/A

The amount of time after proving the M2PA adapter layer waits to receive a Link Status Ready message from the peer.

1000 -

60000

10000

N/A

:t4n

Proving Timer (Normal)

The amount of time the M2PA adapter layer generates Link Status Proving messages during normal proving.

1000 -

70000

10000

30000

:t4e

Proving Timer (Emergency)

The amount of time the M2PA adapter layer generates Link Status Proving messages during emergency proving.

400 - 5000

500

500

:t5

Busy Rate Timer

The amount of time between sending Link Status Busy messages while the link is in-service.

80 - 10000

1000

100

:t6

Remote Congestion Timer

The amount of time that a congested link will remain in service.

1000 - 6000

3000

3000

:t7

Excess Delay in

Acknowledgement

Timer

The maximum amount of time that may pass between when a user data message is transmitted and an acknowledgement for that message is received from the peer. If this timer expires, the link is taken out of service.

200 - 2000

1200

1200

:t16

Proving Rate Timer

The amount of time between sending Link Status Proving messages while the T4N or T4E timer is running.

100 -

500000 **

200000 **

200000 **

:t17

Ready Rate Timer

The amount of time between sending Link Status Ready messages while the T3 timer is running.

100 - 500

250

250

:t18

Processor Outage Rate Timer

The amount of time between sending Link Status Processor Outage messages while the link is in-service.

100 - 10000

1000

1000

msecs - milliseconds

* The T2 Timer can be specified only for the M2PA RFC version.

** The value of the T16 Timer is in microseconds.

The value of any timer parameter not specified with the chg-m2pa-tset command is not changed.

  1. Display the M2PA timer sets in the database by entering the rtrv-m2pa-tset command with the version of the M2PA timer sets you wish to change with the ver parameter.
    To display the M2PA Draft 6 timer values, enter this command.

    rtrv-m2pa-tset:ver=d6

    
rlghncxa03w 06-10-28 21:16:37 GMT EAGLE5 36.0.0

M2PA Draft 6 Timers (in msec, T16 in microsec)

TSET T1     T2     T3    T4N   T4E  T5    T6   T7    T16    T17  T18
1    6000   ------ 5000  20000 500  5000  3000 1000  200000 250  1000
2    10000  ------ 10000 10000 500  1000  3000 1200  200000 250  1000
3    10000  ------ 10000 10000 500  1000  3000 1200  200000 250  1000
4    10000  ------ 10000 10000 500  1000  3000 1200  200000 250  1000
5    10000  ------ 10000 10000 500  1000  3000 1200  200000 250  1000
6    10000  ------ 10000 10000 500  1000  3000 1200  200000 250  1000
7    10000  ------ 10000 10000 500  1000  3000 1200  200000 250  1000
8    10000  ------ 10000 10000 500  1000  3000 1200  200000 250  1000
9    27500  ------ 3850  4859  450  5700  3750 1150  250    375  8750
10   10000  ------ 10000 10000 500  1000  3000 1200  200000 250  1000
11   10000  ------ 10000 10000 500  1000  3000 1200  200000 250  1000
12   10000  ------ 10000 10000 500  1000  3000 1200  200000 250  1000
13   10000  ------ 10000 10000 500  1000  3000 1200  200000 250  1000
14   10000  ------ 10000 10000 500  1000  3000 1200  200000 250  1000
15   10000  ------ 10000 10000 500  1000  3000 1200  200000 250  1000
16   10000  ------ 10000 10000 500  1000  3000 1200  200000 250  1000
17   10000  ------ 10000 10000 500  1000  3000 1200  200000 250  1000
18   10000  ------ 10000 10000 500  1000  3000 1200  200000 250  1000
19   10000  ------ 10000 10000 500  1000  3000 1200  200000 250  1000
20   10000  ------ 10000 10000 500  1000  3000 1200  200000 250  1000

    To display the M2PARFC timer values, enter this command.

    rtrv-m2pa-tset:ver=rfc

    
rlghncxa03w 06-10-28 21:16:37 GMT EAGLE5 36.0.0

M2PA RFC Timers (in msec, T16 in microsec)

TSET T1     T2     T3    T4N   T4E  T5    T6   T7    T16    T17  T18
1    6000   20000  5000  20000 500  5000  3000 1000  200000 250  1000
1    300000 20000  2000  30000 500  100   3000 1200  200000 250  1000
2    300000 20000  2000  30000 500  100   3000 1200  200000 250  1000
3    300000 20000  2000  30000 500  100   3000 1200  200000 250  1000
4    300000 20000  2000  30000 500  100   3000 1200  200000 250  1000
5    300000 20000  2000  30000 500  100   3000 1200  200000 250  1000
6    300000 20000  2000  30000 500  100   3000 1200  200000 250  1000
7    300000 20000  2000  30000 500  100   3000 1200  200000 250  1000
8    300000 20000  2000  30000 500  100   3000 1200  200000 250  1000
9    27500  10000  3850  4859  450  5700  3750 1150  250    375  8750
10   300000 20000  2000  30000 500  100   3000 1200  200000 250  1000
11   300000 20000  2000  30000 500  100   3000 1200  200000 250  1000
12   300000 20000  2000  30000 500  100   3000 1200  200000 250  1000
13   300000 20000  2000  30000 500  100   3000 1200  200000 250  1000
14   300000 20000  2000  30000 500  100   3000 1200  200000 250  1000
15   300000 20000  2000  30000 500  100   3000 1200  200000 250  1000
16   300000 20000  2000  30000 500  100   3000 1200  200000 250  1000
17   300000 20000  2000  30000 500  100   3000 1200  200000 250  1000
18   300000 20000  2000  30000 500  100   3000 1200  200000 250  1000
19   300000 20000  2000  30000 500  100   3000 1200  200000 250  1000
20   300000 20000  2000  30000 500  100   3000 1200  200000 250  1000

    If the ver parameter is not specified when entering the rtrv-m2pa-tset command, both the Draft 6 and RFC values are displayed. This is an example of the possible output. 

    
rlghncxa03w 06-10-28 21:16:37 GMT EAGLE5 36.0.0

M2PA Draft 6 Timers (in msec, T16 in microsec)

TSET T1     T2     T3    T4N   T4E  T5    T6   T7    T16    T17  T18
1    6000   ------ 5000  20000 500  5000  3000 1000  200000 250  1000
2    10000  ------ 10000 10000 500  1000  3000 1200  200000 250  1000
3    10000  ------ 10000 10000 500  1000  3000 1200  200000 250  1000
4    10000  ------ 10000 10000 500  1000  3000 1200  200000 250  1000
5    10000  ------ 10000 10000 500  1000  3000 1200  200000 250  1000
6    10000  ------ 10000 10000 500  1000  3000 1200  200000 250  1000
7    10000  ------ 10000 10000 500  1000  3000 1200  200000 250  1000
8    10000  ------ 10000 10000 500  1000  3000 1200  200000 250  1000
9    27500  ------ 3850  4859  450  5700  3750 1150  250    375  8750
10   10000  ------ 10000 10000 500  1000  3000 1200  200000 250  1000
11   10000  ------ 10000 10000 500  1000  3000 1200  200000 250  1000
12   10000  ------ 10000 10000 500  1000  3000 1200  200000 250  1000
13   10000  ------ 10000 10000 500  1000  3000 1200  200000 250  1000
14   10000  ------ 10000 10000 500  1000  3000 1200  200000 250  1000
15   10000  ------ 10000 10000 500  1000  3000 1200  200000 250  1000
16   10000  ------ 10000 10000 500  1000  3000 1200  200000 250  1000
17   10000  ------ 10000 10000 500  1000  3000 1200  200000 250  1000
18   10000  ------ 10000 10000 500  1000  3000 1200  200000 250  1000
19   10000  ------ 10000 10000 500  1000  3000 1200  200000 250  1000
20   10000  ------ 10000 10000 500  1000  3000 1200  200000 250  1000

M2PA RFC Timers (in msec, T16 in microsec)

TSET T1     T2     T3    T4N   T4E  T5    T6   T7    T16    T17  T18
1    6000   20000  5000  20000 500  5000  3000 1000  200000 250  1000
2    300000 20000  2000  30000 500  100   3000 1200  200000 250  1000
3    300000 20000  2000  30000 500  100   3000 1200  200000 250  1000
4    300000 20000  2000  30000 500  100   3000 1200  200000 250  1000
5    300000 20000  2000  30000 500  100   3000 1200  200000 250  1000
6    300000 20000  2000  30000 500  100   3000 1200  200000 250  1000
7    300000 20000  2000  30000 500  100   3000 1200  200000 250  1000
8    300000 20000  2000  30000 500  100   3000 1200  200000 250  1000
9    27500  10000  3850  4859  450  5700  3750 1150  250    375  8750
10   300000 20000  2000  30000 500  100   3000 1200  200000 250  1000
11   300000 20000  2000  30000 500  100   3000 1200  200000 250  1000
12   300000 20000  2000  30000 500  100   3000 1200  200000 250  1000
13   300000 20000  2000  30000 500  100   3000 1200  200000 250  1000
14   300000 20000  2000  30000 500  100   3000 1200  200000 250  1000
15   300000 20000  2000  30000 500  100   3000 1200  200000 250  1000
16   300000 20000  2000  30000 500  100   3000 1200  200000 250  1000
17   300000 20000  2000  30000 500  100   3000 1200  200000 250  1000
18   300000 20000  2000  30000 500  100   3000 1200  200000 250  1000
19   300000 20000  2000  30000 500  100   3000 1200  200000 250  1000
20   300000 20000  2000  30000 500  100   3000 1200  200000 250  1000
  2. Change the desired timer set with the chg-m2pa-tset command. To change a specific timer set, enter the chg-m2pa-tset command with the tset and ver parameters and the timer parameters you wish to change. For this example, to change the values of the RFC version of timer set 1, enter this command.

    chg-m2pa-tset:tset=1:t1=27500:t2=10000:t3=3850:t4e=450:t4n=45000:t5=5700 :t6=3750:t7=1150:t16=250000:t17=375:t18=8750:ver=rfc

    To change the values of the Draft 6 version of timer set 1, enter this command.

    chg-m2pa-tset:tset=1:t1=27500:t3=3850:t4e=450:t4n=45000:t5=5700 :t6=3750:t7=1150:t16=250000:t17=375:t18=8750:ver=d6

    Note:

    The values for theM2PA timers are shown inTable 6-13.

    To copy an M2PA timer set to another timer set, enter the chg-m2pa-tset command with the tset, ver, and srctset parameters. For this example, to copy the RFC version of timer set 9 to timer set 1, enter this command.

    chg-m2pa-tset:tset=1:srctset=9:ver=rfc

    To copy the Draft 6 version of timer set 9 to timer set 1, enter this command.

    chg-m2pa-tset:tset=1:srctset=9:ver=d6

    Note:

    Thever parameter is optional and does not have to be specified to change theM2PARFC timer values. The default value for thever parameter isrfc. If you wish to change theM2PA Draft 6 timer values, thever=d6 parameter must be specified with thechg-m2pa-tset command.

    When the chg-m2pa-tset command has successfully completed, the following message should appear. 

    
rlghncxa03w 06-10-28 21:16:37 GMT EAGLE5 36.0.0
CHG-M2PA-TSET: MASP A - COMPLTD
  3. Verify the changes by entering the rtrv-m2pa-tset command specifying the timer set and version parameter values specified in 2. For this example, enter one of these commands.

    rtrv-m2pa-tset:tset=1:ver=rfc

    
rlghncxa03w 06-10-28 21:16:37 GMT EAGLE5 36.0.0

M2PA RFC Timers (in msec, T16 in microsec)

TSET T1     T2     T3    T4N   T4E  T5    T6   T7    T16     T17  T18
1    27500  10000  3850  45000 450  5700  3750 1150  250000  375  8750

    rtrv-m2pa-tset:tset=1:ver=d6

    
rlghncxa03w 06-10-28 21:16:37 GMT EAGLE5 36.0.0

M2PA Draft 6 Timers (in msec, T16 in microsec)

TSET T1     T2     T3    T4N   T4E  T5    T6   T7    T16     T17  T18
1    27500  ------ 3850  45000 450  5700  3750 1150  250000  375  8750

    rtrv-m2pa-tset:tset=9:ver=rfc

    
rlghncxa03w 06-10-28 21:16:37 GMT EAGLE5 36.0.0

M2PA RFC Timers (in msec, T16 in microsec)

TSET T1     T2     T3    T4N   T4E  T5    T6   T7    T16     T17  T18
9    27500  10000  3850  45000 450  5700  3750 1150  250000  375  8750

    rtrv-m2pa-tset:tset=9:ver=d6

    
rlghncxa03w 06-10-28 21:16:37 GMT EAGLE5 36.0.0

M2PA Draft 6 Timers (in msec, T16 in microsec)

TSET T1     T2     T3    T4N   T4E  T5    T6   T7    T16     T17  T18
9    27500  ------ 3850  45000 450  5700  3750 1150  250000  375  8750
  4. 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 6-33 Changing an M2PA Timer Set