The PGW refecence to his own ip address and to the IP address

of the standby PGW are all in the file :

/opt/CiscoMGC/etc/XECfgParm.dat

In this configuration parameters

*.ipAddrLocalA =

*.ipAddrLocalB =

*.ipAddrPeerA =

*.ipAddrPeerB =

*.IP_Addr1 =

*.IP_Addr2 =

*.IP_Addr3 =

*.IP_Addr4 =

So you need to change this file in both the active and the standby PGW.

After the change the PGW application need to be restarted

In addition:

- all the NAS need to change the pointers to the

PGW addresses in they rlm-group configuration section

- all the SLTs need to change the pointer to the PGW IP address in the

"ss7 session" configuration section

After the change the SLTs neeed ot be rebooted.