Cisco Cisco Packet Data Gateway (PDG)
SGSN Changes in Release 17
SGSN Enhancements for 17.0 ▀
Release Change Reference, StarOS Release 17 ▄
519
New Behavior: This feature allows the backup of a small set of KPI counters for recovery of the counter values after a
session manager crash.
session manager crash.
Using the new
statistics-backup sgsn backup-interval
command, in the Global configuration mode, the
operator can enable the feature and define the frequency of the backup; range 1-60 minutes.
In support of this new functionality, four new schemas have been defined with stats, derived from the SGSN and SGTP
schemas, that will be backed up for recovery.
schemas, that will be backed up for recovery.
Table 1. New Backup Statistics Schemas
Schemas
Keys
Description
iups-bk
vpn-id
vpnname
servname
vpnname
servname
This schema is used for 3G GMM-SM counters which are backed up. The counters in this schema are
pegged per IuPS service. Each line of output is per IuPS service. Additionally, there will be one set of
consolidated counters for all IuPS services which is displayed with the SGSN service name.
pegged per IuPS service. Each line of output is per IuPS service. Additionally, there will be one set of
consolidated counters for all IuPS services which is displayed with the SGSN service name.
gprs-bk
vpn-id
vpnname
servname
vpnname
servname
This schema is used for 2G GMM-SM counters which are backed up. The counters in this schema are
pegged per GPRS service. Each line of output is per GPRS service. Additionally, there will be one set of
consolidated counters for all GPRS services which is displayed with the SGSN service name.
pegged per GPRS service. Each line of output is per GPRS service. Additionally, there will be one set of
consolidated counters for all GPRS services which is displayed with the SGSN service name.
map-bk
vpn-id
vpnname
servname
vpnname
servname
This schema is used for MAP and SMS counters which are backed up. The counters in this schema are
pegged per MAP service. Each line of output is per MAP service.
pegged per MAP service. Each line of output is per MAP service.
sgtp-bk
vpn-id
vpnname
servname
vpnname
servname
This schema is used for GTPU counters which are backed up. The counters in this schema are pegged per
IuPS and SGTP service, one per line. Additionally, there will be one line of output which represents the
counters consolidated for all IuPS and SGTP services.
IuPS and SGTP service, one per line. Additionally, there will be one line of output which represents the
counters consolidated for all IuPS and SGTP services.
Command Changes
statistics-backup sgsn
Using the new
statistics-backup sgsn
command, in the Global configuration mode, enables this new feature and
makes it possible for the operator to optionally define the frequency of the backup; ranging from 1 to 60 minutes:
configure
statistics-backup sgsn [ backup-interval minutes ]
no statistics-backup sgsn
end
Notes:
backup-interval minutes
defines the interval as 1 to 60 minutes, with default of 5 minutes.
Displaying Backed-up Statistics
To view the recovered counter values, a new keyword has been added to the show commands - recovered-values
keyword option:
keyword option:
show gmm-sm statistics [ recovered-values ] [ verbose ]