DPC configuration change procedure on ISUP platform

  • KM02448527
  • 27-Jun-2016
  • 27-Jun-2016

Summary

DPC configuration change procedure on ISUP platform

Question

DPC configuration change procedure

Answer

Offline method so traffic is impacted
  1. Backup procedure:
    Before the configuration change we recommend to make a full system backup to recover quickly OS + OCMP Software + OCMP Configuration if needed. If it’s not possible at least backup OCMP configuration which requires OS and OCMP software running properly, same for IPSTG. Those backup scripts provided maybe need some modifications depending on your OS and OCMP & IPSTG version.


chmod 755 ocmp4_4-config-backup.sh
For backup:
./ocmp4_4-config-backup.sh -backup /var (script name & -backup option & destination folder where files will be stored)
For restore:
./ocmp4_4-config-backup.sh -restore /var/20160331-114337 (script name & -restore option & destination folder where files are stored)

Same for IPSTG script

 

2.DPC change procedure: 

  • Route the traffic to this platform
  • Make appropriated changes as described below:

Modification at USP-M level:

o   /etc/opt/OC/SS7/Saved.SS7_Stack_1.conf.ref.xml
o   /etc/opt/OC/SS7/isup.app0.conf & /etc/opt/OC/SS7/isup.app1.conf are not needed as only Signaling is affected not Voice.
o   /etc/opt/OC/IPSTG/SS7_SAVE_CONFIG.DAT.SS7_Stack_1.conf 
Modification at IPSTG level.
o   /usr/var/ss7/platform_a/save_config/SS7_SAVE_CONFIG.DAT.SS7_Stack_1.conf 
  • Stop OCMP & USPM
            1st node:
                 Stop OCMP Base:
                 OCMPClusterConfig
                  /> stop cluster
                 Stop OCMP BRE: ocmp-bre stop
                 Stop USPM: ss7Stop –all 
            2nd node:
                 Stop OCMP Base:
                 OCMPClusterConfig
                 /> stop cluster
                Stop OCMP BRE: ocmp-bre stop
                Stop USPM: ss7Stop -all
  • Stop IPSTG
           1st node:
                ss7shutdown a fep dir 
           2nd node:
                ss7shutdown a fep dir
  • Check that all processes are stopped (ocStatus, ocftStatus, ps –elf  grep –i ss7)
  • Apply changes on all the nodes
  • Start OCMP & USPM  
           1st node:
               Start OCMP Base:
               OCMPClusterConfig
                 /> start cluster
              Stop OCMP BRE: ocmp-bre start
              Stop USPM: ss7Start 
            2nd node:
               Start OCMP Base:
               OCMPClusterConfig
                 /> start cluster
               Stop OCMP BRE: ocmp-bre start
               Stop USPM: ss7Start
  • Start IPSTG 
           1st node:
               ss7startup a fep dir 
            2nd node:
               ss7startup a fep dir
  • Check that all processes are started (ocStatus, ocftStatus, ps –elf grep –i ss7) and configuration changes were taken into account
  • Restore traffic
Online method: You can do it also online using ss7Rmon tool (ss7RmonStart –C SS7_Stack_1), configure new DPC/remove old one, SS7CheckPoint and cfgPropagate to configure IPSTGs from MW.

Two remarks:

1. HP recommendation is to use ss7Rmon tool for this change. Easiest and online procedure.
2. This procedure (replacing files) has not been fully tested in our labs so this is under customer responsibility.