Adding Remote Loopback Points

This procedure is used to add remote loopback points to be used by the link fault sectionalization feature to the database, using the ent-lbp command. The ent-lbp command uses these parameters.

:loc – The card location of the signaling link to be tested.

:link – The signaling link on the card specified in the loc parameter to be tested.

:lbp – Identifies the far-end loopback point that lies along a SS7 signaling link path between the EAGLE up to and including the target device.

:clli – The CLLI code or other mnemonic identifier used to describe the specified loopback point.

:rle – The remote link element to be looped back for testing.

:rep – The number of link elements of the same type, not including the target device, that lies between the EAGLE and the link element to be tested.

:lfst – The type of link fault sectionalization loopback test to be performed.

To add remote loopback points to the database, the link fault sectionalization feature must be turned on.

The DS0 and network element interface (NEI) link elements do not support non-latching loopbacks

If the remote link element to be tested is a network element interface (NEI), the value of the rep parameter must be zero.

The rep parameter can only be specified for a link fault sectionalization latching loopback test

The signaling link being tested can be assigned to one of these card types as defined by the type parameter of the ent-card command:

limds0 (multi-port LIM - P/N 870-2061-XX
limt1 (E1/T1 MIM - P/N 870-2198-XX, HC MIM - P/N 870-2671-XX, or E5-E1T1 - P/N 870-1873-XX)
limch (E1/T1 MIM - configured as a T1 channel card - P/N 870-2198-XX)

Any signaling link can be selected for testing, as long as the signaling link being tested is equipped. The LIMs must be assigned to either the ss7ansi or ccs7itu application. Use the rtrv-card command to verify the card type and the application.

The specified loopback point cannot already be in the database.

The loopback point ID value cannot exceed a previously defined network element interface loopback point value.

Only one network element interface loopback point can be defined for each SS7 signaling link.

A network element interface (NEI) loopback point must be defined as the terminating SS7 signaling link component.

The value specified for the rep parameter must be greater than the value of the rep parameter assigned to the previous loopback point and less than any rep parameter values for any subsequent loopback points, if any are defined. For example, the signaling link on card 1215, link B, has 5 loopback points defined (see the rtrv-lbp command output in step 2). The value of the rep parameter used for loopback point 5 must be greater that the rep parameter value used for loopback point 3, and less than the rep parameter value used for loopback point 7.

The link fault sectionalization feature must be turned on. Verify this by entering the rtrv-feat command. If the link fault sectionalization feature is off, shown by the entry LFS = off in the output of the rtrv-feat command, it can be turned on by entering the chg-feat:lfs=on command.

Note:

Once the link fault sectionalization feature is turned on with the chg-feat command, it cannot be turned off.

The link fault sectionalization 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 link fault sectionalization feature, contact your Oracle Sales Representative or Account Representative.

Refer to Appendix A of Commands User's Guide for a summary of loopback testing commands and functions.

The examples used in this procedure are based on the example network shown in Table 3-22.

Table 3-22 Loopback Point Configuration Table

SLK LOC	SLK LINK	LBP	RLE	REP	LFST
1204	B	3	DS0	0	LLT
		6	DS0	4	LLT
		9	NEI	0	LLT

Canceling the RTRV-SLK Command

Because the rtrv-slk command used in this procedure can output information for a long period of time, the rtrv-slk command can be canceled and the output to the terminal stopped. There are three ways that the rtrv-slk command can be canceled.

Press the F9 function key on the keyboard at the terminal where the rtrv-slk command was entered.
Enter the canc-cmd without the trm parameter at the terminal where the rtrv-slk command was entered.
Enter the canc-cmd:trm=<xx>, where <xx> is the terminal where the rtrv-slk command was entered, from another terminal other that the terminal where the rtrv-slk command was entered. To enter the canc-cmd:trm=<xx> command, the terminal must allow Security Administration commands to be entered from it and the user must be allowed to enter Security Administration commands. The terminal’s permissions can be verified with the rtrv-secu-trm command. The user’s permissions can be verified with the rtrv-user or rtrv-secu-user commands.

For more information about the canc-cmd command, go to Commands User's Guide.

Display the signaling links in the database by entering the rtrv-slk command.

This is an example of the possible output.

rlghncxa03w 09-07-19 21:16:37 GMT EAGLE5 41.1.0

                                  L2T               PCR  PCR
LOC  LINK LSN         SLC TYPE    SET  BPS    ECM   N1   N2
1201 A    ls01         0  LIMDS0  1    56000  BASIC ---  -----
1201 B    lsa1         0  LIMDS0  1    56000  BASIC ---  -----
1202 B    ls02         0  LIMDS0  2    56000  BASIC ---  -----
1203 A    ls03         0  LIMDS0  3    56000  BASIC ---  -----
1203 B    lsa2         0  LIMDS0  1    56000  BASIC ---  -----
1204 B    ls01         1  LIMDS0  1    56000  BASIC ---  -----
1205 A    lsa3         0  LIMDS0  4    56000  BASIC ---  -----
1206 A    ls02         1  LIMDS0  2    56000  BASIC ---  -----
1207 A    lsn1207a     0  LIMDS0  1    56000  BASIC ---  -----
1207 B    lsn1207b     0  LIMDS0  1    56000  BASIC ---  -----
1208 B    ls03         1  LIMDS0  3    56000  BASIC ---  -----
1212 A    ls04         0  LIMDS0  4    56000  BASIC ---  -----
1213 B    ls05         0  LIMDS0  5    56000  BASIC ---  -----
1214 A    lsn1214a     0  LIMDS0  2    56000  BASIC ---  -----
1214 B    lsa3         1  LIMDS0  4    56000  BASIC ---  -----
1215 A    ls05         1  LIMDS0  5    56000  BASIC ---  -----
1301 B    ls06         0  LIMDS0  6    56000  BASIC ---  -----
1304 B    ls06         1  LIMDS0  6    56000  BASIC ---  -----
1308 A    ls06         2  LIMDS0  6    56000  BASIC ---  -----
1311 A    ls01         2  LIMDS0  1    56000  BASIC ---  -----
1311 A1   ls05         2  LIMDS0  5    56000  BASIC ---  -----
1311 B    ls03         2  LIMDS0  3    56000  BASIC ---  -----
1311 B1   ls07         1  LIMDS0  7    56000  BASIC ---  -----
1313 A    ls07         0  LIMDS0  7    56000  BASIC ---  -----
1315 A    lsn5         0  LIMDS0  11   56000  BASIC ---  -----
1317 A    lsi7         0  LIMDS0  11   56000  BASIC ---  -----

                                   LP            ATM
LOC  LINK LSN         SLC TYPE     SET  BPS      TSEL      VCI    VPI   LL
1302 A    atmansi0     0  LIMATM   3   1544000   EXTERNAL  35     15    0
1305 A    atmansi1     0  LIMATM   4   1544000   INTERNAL  100    20    2
1318 A    atmansi0     1  LIMATM   9   1544000   LINE      150    25    4

                                   LP         ATM                    E1ATM
LOC  LINK LSN         SLC TYPE     SET BPS    TSEL     VCI   VPI  CRC4 SI SN
2101 A    atmitu1      0  LIME1ATM 5   2.048M LINE     150   2    ON   1  20
2105 A    atmitu1      1  LIME1ATM 5   2.048M LINE     35    15   ON   2  15

SLK table is (31 of 1200) 3% full

Display the existing loopback point values by entering the rtrv-lbp command.

This is an example of the possible output.

rlghncxa03w 06-10-17 16:02:05 GMT  EAGLE5 36.0.0
LOC   LINK  LBP  RLE  REP CLLI                      
LFST
1201  A     1    DS0   0  ------------------------  LLT
            7    OCU   0  ------------------------  NLT
            9    NEI   0  ------------------------  LLT
    
1203  B     2    DS0   0  ------------------------  LLT
            3    DS0   4  ------------------------  LLT
            4    NEI   0  ------------------------  LLT
1207  B     1    DS0   0  ------------------------  LLT
            6    NEI   0  ------------------------  LLT
1215  A     1    DS0   0  ------------------------  LLT
            3    DS0   4  ------------------------  LLT
            5    DS0   5  ------------------------  LLT
            7    DS0   8  ------------------------  LLT
            9    NEI   0  ------------------------  LLT

Add the loopback point to the database, using the ent-lbp command.
For this example, enter these commands.

ent-lbp:loc=1204:link=b:lbp=3:rle=ds0:rep=0:lfst=llt

ent-lbp:loc=1204:link=b:lbp=6:rle=ds0:rep=4:lfst=llt

ent-lbp:loc=1204:link=b:lbp=9:rle=nei:rep=0:lfst=llt

When each of these commands have completed, this message should appear.
```
rlghncxa03w 06-10-07 00:22:57 GMT  EAGLE5 36.0.0
ENT-LBP: MASP A - COMPLTD
```

Verify the changes using the rtrv-lbp command.

This is an example of the possible output.

rlghncxa03w 06-10-17 16:02:05 GMT  EAGLE5 36.0.0
LOC   LINK  LBP  RLE  REP CLLI                      LFST
1201  A     1    DS0   0  ------------------------  LLT
            7    OCU   0  ------------------------  NLT
            9    NEI   0  ------------------------  LLT
    
1203  B     2    DS0   0  ------------------------  LLT
            3    DS0   4  ------------------------  LLT
            4    NEI   0  ------------------------  LLT
1204  B     3    DS0   0  ------------------------  LLT
            6    DS0   4  ------------------------  LLT
            9    NEI   0  ------------------------  LLT
1207  B     1    DS0   0  ------------------------  LLT
            6    NEI   0  ------------------------  LLT
1215  A     1    DS0   0  ------------------------  LLT
            3    DS0   4  ------------------------  LLT
            5    DS0   5  ------------------------  LLT
            7    DS0   8  ------------------------  LLT
            9    NEI   0  ------------------------  LLT

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 3-29 Adding Remote Loopback Points