Gs Service Configuration Mode Commands


Gs Service Configuration Mode Commands
 
 
The Gs Service configuration mode configures the parameters used to setup and maintain a Gs interface for a connection between the SGSN and an MSC/VLR.
 
Important: The commands or keywords/variables that are available are dependent on platform type, product version, and installed license(s).
 
associate-sccp-network
This command associates a previously defined Signaling Connection Control Part (SCCP) network instance with the Gs service. This association is required to access Visitor Location Register(s) (VLRs).
Product
SGSN
Privilege
Security Administrator, Administrator
Syntax
associate-sccp-network sccp_net_id
no associate-sccp-network
no
Removes the associated SCCP network configuration instance from this Gs service configuration.
sccp_net_id
Identifies the SCCP network configuration instance to associate with this Gs interface to enable connection with VLR(s).
sccp_network_num: Must be an integer from 1 through 12.
Usage
Use this command to associate the SCCP network configuration instance with the Gs interface in this service.
Important: A single SCCP network configuration instance can not be shared with multiple Gs services.
Important: To enable a Gs service, the user needs to configure ssn with the bssap+ command.
Example
Following command associates SCCP network 2 with this Gs service.
associate-sccp-network 2
 
bssap+
This command defines the Base Station System Application Part Plus configuration parameters for the Gs service to enable the SGSN to access a Visitor Location Register(s) (VLRs).
Product
SGSN
Privilege
Security Administrator, Administrator
Syntax
[ no ] bssap+ ssn ss_num
no
Removes the configured BSSAP+ subsystem number from this Gs service.
ssn ss_num
Specifies the subsystem number to configure in this Gs interface to use BSSAP+.
ss_num must be an integer from 1 through 255.
Usage
Use this command to configure the BSSAP+ subsystem with Gs interface in this service to communicate with VLR(s).
Important: A single SCCP network configuration instance can not be shared with multiple Gs services.
Important: To start a Gs service, the user needs to configure the command parameter.
Example
Following command configures subsystem 101 with BSSAP+ in this Gs service.
bssap+ ssn 101
 
end
Exits the current configuration mode and returns to the Exec mode.
Product
All
Privilege
Security Administrator, Administrator
Syntax
end
Usage
Return to the Exec mode.
 
exit
Exits the current configuration mode and returns to the previous configuration mode.
Product
All
Privilege
Security Administrator, Administrator
Syntax
exit
Usage
Return to the previous configuration mode.
 
max-retransmission
This command configures the retransmission values for different procedure counters in Gs service as described in TS 29.018.
Product
SGSN
Privilege
Security Administrator, Administrator
Syntax
max-retransmissions { n8 | n9 | n10 | n12 } retrans_num
default max-retransmissions { n8 | n9 | n10 | n12 }
no
Removes the configured Gs procedures from this Gs service.
{ n8 | n9 | n10 | n12 }
Specifies the various Gs service procedures that are available to be used to communicate with VLR(s).
n9: Defines the maximum number of retries for explicit IMSI detach from a non-GPRS service. Default is 2.
n10: Defines the maximum number of retries for implicit IMSI detach from the GPRS service. Default is 2.
n12: Defines the maximum number of retries for BSSAP+ to send Reset Indication messages. Default is 2.
retrans_num
Default: 2
Specifies the number of re-transmission of message for specified procedures.
retrans_num: Must be an integer from 0 through 10.
Usage
Use this command to configure the retransmission values for specific procedure counters in Gs service. counters are based on TS 29.018.
This command can be entered for each procedure counter separately.
Example
Following command configure retransmission value as 3 for counter for procedure to send BSSAP+ Reset Indication messages in this Gs service.
max-retransmissions n12 3
 
non-pool-area
This command creates a non-pool area for a set of subscriber location area code (LAC) values that can be used with a specific VLR for the Gs service.
Product
SGSN
Privilege
Security Administrator, Administrator
Syntax
non-pool-area non_pool_name { use-vlr vlr_name lac lac_num }+
no non-pool-area non_pool_name
no
Removes the configured non-pool area from this Gs service.
non_pool_name
Specifies the name of the non-pool area to configure with this command.
non_pool_name must be an alpha and/or numeric string of 1 to 63 characters.
use-vlr vlr_name
Specifies the name of the VLR to be associated with this non-pool area.
vlr_name is the name of VLR and must be an alpha and/or numeric string of 1 to 63 characters.
lac lac_num
Specifies the subscribers’ location area code to be attached with this non-pool area and specific VLR. This LAC of subscriber is obtained from the radio area indicator (RAI).
lac_num is the LAC value and must be an integer value from 1 through 65535.
+
More than one of the above keywords can be entered within a single command.
Usage
Use this command to specify the non-pool area containing VLR name to use for a set of LAC.
This command can be used multiple times, subject to a limit of 32 LAC values (the total for non-pool-area and pool-area configurations) per Gs service.
Example
Following command configure a non-pool area starpool1 to use VLR named starvlr1 for LAC 101 in a Gs service.
non-pool-area starpool1 use-vlr starvlr1 lac 101
 
pool-area
This command creates a pool area configuration instance. This command also enters the Pool Area configuration mode to define the set of VLRs to use for a pool area for a set of subscriber location area code (LAC) values in the Gs service.
Product
SGSN
Privilege
Security Administrator, Administrator
Syntax
pool-area pool_name [-noconfirm ]
no pool-area non_pool_name
no
Removes the configured pool area from this Gs service.
pool_name
Specifies the name of the pool area to configure with this command for VLR pooling and association of a LAC.
pool_name: Must be an alpha and/or numeric string of 1 to 63 characters.
-noconfirm
Indicates that the command is to execute without any additional prompt and confirmation from the user.
Usage
Use this command to create/enter the pool area configuration mode. This mode is used configure the set of VLRs to be used for a set of subscriber LAC.
This command can be used multiple times, subject to a limit of 32 LAC values (the total number of non-pool-area and pool-area configurations) per Gs service.
Example
The following command configures a pool area named starpool1 in a Gs service without any confirmation prompt.
pool-area starpool1 -noconfirm
 
sgsn-number
Define the SGSN’s E164 number to associate an SGSN with this Gs Service.
Product
SGSN
Privilege
Security Administrator, Administrator
Syntax
sgsn-number E.164_number
E.164_number
Defines the SGSN’s ‘telephone’ number, the ISDN number for per ITU-T E.164 numbering plan. The number must be a numerical string of 1 to 15 digits. �
Usage
For releases 8.1 or higher, use this command to define the SGSN’s E.164 ISDN number. This value should match the sgsn-number defined for SGSN Service or GPRS Service.
Important: Note: the Gs Service will not start unless the SGSN’s E.164 number is configured.
Example
sgsn-number 12345678901234
 
timeout
This command configures various timers defining the wait before retransmitting a specific message for Gs service procedures.
Product
SGSN
Privilege
Security Administrator, Administrator
Syntax
timeout { t6-1-timer t6_1_dur | t8-timer t8_dur | t9-timer t9_dur | t10-timer t10_dur | t12-1-timer minute t12_1_dur | t12-2-timer t12_2_dur}
[ default ] timeout { t6-1-timer | t8-timer | t9-timer | t10-timer | t12-1-timer | t12-2-timer }
default
Sets the timer value to wait in seconds/minutes to default values. Default values for timers are:
t6-1-timer: 10 seconds
t8-timer: 4 seconds
t9-timer: 4 seconds
t12-1-timer: 54 mins (+ 8 seconds)
t12-2-timer: 4 seconds
t6-1-timer t6_1_dur
Default: 10
Specifies the retransmission timer value to guard the location update.
t6_1_dur is the waiting duration in seconds before retransmitting the specific message and must be an integer from 10 through 90.
t8-timer t8_dur
Default: 4
Specifies the retransmission timer value to guard the explicit IMSI detach from the GPRS service procedure.
t8_dur is the waiting duration in seconds before retransmitting the specific message and must be an integer from 1 through 30.
t9-timer t9_dur
Default: 4
Specifies the retransmission timer value to guard the explicit IMSI detach from the non-GPRS service procedure.
t9_dur is the waiting duration in seconds before retransmitting the specific message and must be an integer from 1 through 30.
t10-timer t10_dur
Default: 4
Specifies the retransmission timer value to guard the implicit IMSI detach from the GPRS service procedure.
t10_dur is the waiting duration in seconds before retransmitting the specific message and must be an integer from 1 through 30.
t12-1-timer minute t12_1_dur
Default: 54 minutes (plus 8 seconds for transmission delay)
Specifies the retransmission timer value to control the resetting of SGSN-Reset variable procedure.
t12_1_dur is the waiting duration in minutes before retransmitting reset message for the SGSN Reset variable and must be an integer from 0 through 380.
t12-2-timer t12_2_dur
Default: 4
Specifies the retransmission timer value to guard the SGSN reset procedure.
t12_2_dur is the waiting duration in seconds before retransmitting the specific message and must be an integer from 1 through 30.
Usage
Use this command to configure the time, for different procedure timers, to wait before retransmitting a procedure message.
This command can be repeated for each timer to configure multiple timers.
Example
Following command sets the timeout duration of 4 seconds for t8 timer to wait before retransmitting the procedure message to explicitly do the IMSI detach from GPRS service:
default timeout t8-timer
 
vlr
This command defines a VLR configuration for use with this Gs service.
Product
SGSN
Privilege
Security Administrator, Administrator
Syntax
vlr vlr_name isdn-number E164_num [ bssap+ ssn ssn ] [ point-code pt_code ]
no vlr vlr_name
no
Removes the configured VLR from the Gs service.
vlr_name
Specifies the name of the VLR to configure in this Gs mode with ISDN number.
vlr_name must be an alpha and/or numeric string of 1 to 63 characters.
isdn-number E164_num
Specifies the VLR number to configure with this command.
E164_num: The ISDN number for the target VLR. Value must be defined according to the E.164 numbering plan and must be a numeric string of 1 to 15 digits.
bssap+ ssn ssn
Specifies the subsystem number to configure with this VLR to use BSSAP+.
ssn: Must be an integer from 1 through 255. Default value is 252.
point-code pt_code
Specifies SS7 address of VLR in point code value to this configured VLR name.
pt_code: Must be in SS7 point code dotted-decimal ###.###.### format or decimal ######## format.
Usage
Use this command to define VLR configuration instances to be associated with the Gs service.
A maximum of 32 VLRs can be configured per Gs service.
Example
Following command configures the VLR named starvlr1 with an ISDN number 12344567, a subsystem number of 252, and a point code value of 123.345.567:
vlr starvlr1 isdn-number 12344567 point-code 123.345.567
 
 

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