# MME SGs Service Configuration Mode Commands

The MME SGs Service Configuration Mode is used to create and manage the LTE Mobility Management Entity (MME) SGs services on this system. The SGs service creates an SGs interface between the MME and a Mobile Switching Center/Visitor Location Register (MSC/VLR).

IMPORTANT:

The commands or keywords/variables that are available are dependent on platform type, product version, and installed license(s).
bind

Binds the service to a logical IP interface serving as the SGs interface.
Platform:

ASR 5000
Product:

MME
Privilege:

Administrator
Syntax

    bind { ipv4-address ipv4_address [ ipv4-address ipv4_address ] | ipv6-address ipv6_address [ ipv6-address ipv6_address ] }no bind

no bind

Removes the interface binding from this service.
ipv4-address ipv4_address [ ipv4-address ipv4_address ]

Specifies the IP address of the SGs interface in IPv4 dotted-decimal notation. n.

A secondary IPv4 address can be configured to support SCTP multi-homing.
ipv6-address ipv6_address [ ipv6-address ipv6_address ]

Specifies the IP address of the SGs interface in IPv6 colon-separated-hexadecimal notation.

A secondary IPv6 address can be configured to support SCTP multi-homing.
Usage:

Associate the SGs service to a specific logical IP address. The logical IP address or interface takes on the characteristics of an SGs interface that provides the session connectivity for circuit switched fallback (CSFB) to/from a Mobile Switching Center/Visitor Location Register (MSC/VLR). Only one interface can be bound to a service. The interface should be configured prior to issuing this command
Example:
The following command binds the logical IP interface with the IPv4 address of 192.68.10.22 to the SGs service:

    bind ipv4-address 192.68.10.22

end

Exits the current configuration mode and returns to the Exec mode.
Product:

All
Privilege:

Security Administrator, Administrator
Syntax

    end

Usage:

Use this command to return to the Exec mode.
exit

Exits the current mode and returns to the parent configuration mode.
Product:

All
Privilege:

Security Administrator, Administrator
Syntax

    exit

Usage:

Use this command to return to the parent configuration mode.
non-pool-area

Configures a non-pool area where a group of Location Area Code (LAC) values use a specific visitor Location Register (VLR).
Platform:

ASR 5000
Product:

MME
Privilege:

Administrator
Syntax

    non-pool-area name use-vlr vlr_name [ lac value(s) ] [ plmnid { any | mcc mcc_value mnc mnc_value } ]no non-pool-area name [ lac value(s) ]

no non-pool-area name [ lac value(s) ]

Removes the configured non-pool-area from this service. Optionally, removes a specific LAC or LACs from this non-pool area. name is the name of an existing non-pool-area expressed as an alphanumeric string of 1 through 63 characters. value(s) is an existing LAC integer value from 1 through 65535.
name

Specifies the name of the non-pool area as an alphanumeric string of 1 through 63 characters.
use-vlr vlr_name

Specifies the VLR to be used in this non-pool area configuration as an alphanumeric string of 1 through 63 characters.
lac value(s)

Specifies the location area code or codes to be used with the configured VLR in this non-pool area configuration. value(s) is an integer(s) from 1 through 65535.

In Release 12.2 and later, a maximum of 96 areas can be added per non pool area (in a single line, or separately). In older releases, a total of 16 area codes can be added (in a single line, or separately).
plmnid { any | mcc mcc_value mnc mnc_value }

Specifies the Public Land Mobile Network (PLMN) identifier to be used with the VLR in this non-pool area configuration.

any: Specifies that any PLMN ID can be used with the VLR in this configuration.

mcc mcc_value mnc mnc_value: Specifies the mobile country code (MCC) and mobile network code (MNC) of the PLMN identifier. mcc_value must be an integer from 101 through 998. mnc_value must be a 2- or 3-digit integer from 00 through 998.
Usage:

Use this command to configure a non-pool area where LAC values and/or PLMN IDs are associated with a specific VLR.

In Release 12.2 and later, a maximum of 48 combined non pool areas and pool areas can be created. In older releases, a maximum of 8 combined non pool areas and pool areas can be created.
Example:
The following command creates a non-pool area named svlr1 associated with a VLR named vlr1 and containing LAC values of 1, 2, 3, 4, 5, 6, 7, and 8:

    non-pool-area svlr1
    use-vlr vlr1 lac 1 2 3 4 5 6 7 8

pool-area

Creates a location area code (LAC) pool area configuration or specifies an existing pool area and enters the LAC Pool Area Configuration Mode.
Platform:

ASR 5000
Product:

MME
Privilege:

Administrator
Syntax

    [ no ] pool-area pool_name [ -noconfirm ]

no

Removes the selected pool area configuration from the SGs service.
pool_name

Specifies the name of the LAC pool area configuration. If pool_name does not refer to an existing pool, a new pool is created. pool_name must be an alphanumeric string of 1 through 64 characters.
Usage:

Use this command to enter the LAC Pool Area Configuration Mode for an existing pool area configuration or for a newly defined pool area configuration. This command is also used to remove an existing pool area configuration.

In Release 12.2 and later, a maximum of 48 combined pool areas and non pool areas can be created. In older releases, a maximum of 8 combined pool areas and non pool areas can be created.

Entering this command results in the following prompt:

    [context_name]hostname(config-sgs-pool-area)#

LAC Pool Area Configuration Mode commands are defined in the MME LAC Pool Area Configuration Mode Commands chapter.
Example:
The following command enters the LAC Pool Area Configuration Mode for a new or existing pool area configuration named pool1:

    pool-area pool1

sctp

Configures the Stream Control Transmission Protocol (SCTP) port number for this service.
Platform:

ASR 5000
Product:

MME
Privilege:

Administrator
Syntax

    sctp port port_numberno sctp

no

Removes the SCTP configuration for this service.
port port_number

Specifies the SCTP port number used to communicate with the MSC/VLR using the SGs interface as an integer from 1 through 65535.
Usage:

Use this command to assign the SCTP port with SCTP socket to communicate with the MSC/VLR through the SGs interface. A maximum of one SCTP port can be associated with one SGs service.
Example:
The following command sets the SCTP port to 29118 for this service:

    sctp port 29118

tac-to-lac-mapping

Maps any Tracking Area Code (TAC) value or a specific TAC value to a LAC value.
Platform:

ASR 5000
Product:

MME
Privilege:

Administrator
Syntax

    tac-to-lac-mapping { any-tac | tac value } map-to lac value +no tac-to-lac-mapping { any-tac | { tac value } + }

any-tac | tac value

Specifies the TAC to map to the LAC.

any-tac: Specifies that any TAC value is to be mapped to the specified LAC.

tac value: Maps a specific TAC value to a LAC value expressed as an integer from 1 through 65535. For specific TAC values, multiple mappings can be entered on the same line (see Example).
map-to lac value

Specifies the LAC value that the selected TAC value, or any TAC value is mapped as an integer from 1 through 65535. For specific TAC values, multiple mappings can be entered on the same line (see Example).
Usage:

Use this command to map TAC values to LAC values.

Enter up to 8 mappings per line.

In Release 12.2 and later, a maximum of 512 mapping lists can be created. In older releases, a maximum of 256 mapping lists can be created.

If no mapping is entered, the default behavior is TAC equals LAC.
Example:
The following command maps a TAC value of 2 to a LAC value of 3, a TAC value of 4 to a LAC value of 5, and a TAC value of 6 to a LAC value of 7:

    tac-to-lac-mapping
    tac 2 map-to lac 3 tac 4 map-to lac 5 tac 6 map-to lac 7

timer

Configures the SGs-AP timer values.
Platform:

ASR 5000
Product:

MME
Privilege:

Administrator
Syntax

    timer  ts6-1 value default timer  ts6-1

default timer ts6-1

Returns the timer to its default setting.
ts6-1 value

Specifies the Ts6-1 timer value (in seconds) as an integer from 10 through 90. This timer is used to guard the Location Update procedure. It is expected to take a value greater than 2 times the maximum transmission time in the SGs interface, plus the supervision timer of the Update Location procedure (as defined in 3GPP TS 29.002 [15]).

Default: 15.
Usage:

Use this command to configure the SGs-AP timers.
Example:
The following command sets the SGs-AP Ts6-1 timer to 20 seconds:

    timer ts6-1 20

vlr

Configures the Visitor Location Register (VLR) to be used by this service.
Platform:

ASR 5000
Product:

MME
Privilege:

Administrator
Syntax

    vlr vlr_name { ipv4-address ipv4_address [ ipv4-address ipv4_address ] | ipv6-address ipv6_address [ ipv6-address ipv6_address ] } port port_numberno vlr vlr_name

no

Removes the configured VLR from this service.
vlr_name

Specifies the name of the VLR as an alphanumeric string of 1 through 63 characters.
ipv4-address ipv4_address [ ipv4-address ipv4_address ]

Specifies the IP address of the VLR in IPv4 dotted-decimal notation.

A secondary IPv4 address can be configured to support SCTP multi-homing.
ipv6-address ipv6_address [ ipv6-address ipv6_address ]

Specifies the IPv6 address of the VLR. ipv6_address must be entered in colon-separated-hexadecimal notation.

A secondary IPv6 address can be configured to support SCTP multi-homing.
port port_number

Specifies the SCTP port number as an integer from 1 through 65535.
Usage:

Use this command to configure the VLR used by this SGs service.

In Release 12.2 and later, a maximum of 48 separate VLRs can be created. In older releases, a maximum of 32 separate VLRs can be created.
Example:
The following command configures a VLR to be used by this service with a name of vlr1, with an SCTP multi-homed primary IPv4 address of 10.2.3.4, a secondary IPv4 address of 10.2.10.1, and a port number of 29118:

    vlr vlr1 ipv4-address
    10.2.3.4 ipv4-address 10.2.10.1 port 29118