# SGSN Global Interface Management

The interface management commands support the Lock/Unlock BSC from SGSN functionality.
Upon entering this mode, the prompt will appear in a manner similar to:

    [local]hostname(config-sgsn-interface-mgmt)#

The SGSN Global configuration mode is a sub-mode derived from the SGSN Global configuration mode.

IMPORTANT:

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

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

SGSN
Privilege:

Security Administrator, Administrator
Syntax

    end

Usage:

Return to the Exec mode.
exit

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

SGSN
Privilege:

Security Administrator, Administrator
Syntax

    exit

Usage:

Returns to the global configuration mode.
interface

Maps the interface management configuration to an NSE-ID or an NSE-name to identify the peer NSE/BSC.
Platform:

ASR 5000
Product:

SGSN
Privilege:

Security Administrator, Administrator
Syntax

    [ no ] interface
    gb peer-nsei id nse_id name nsei_name

no

Removes the interface map from the configuration.
peer-nsei id nsei_id

Maps a specific NSE/BSC to the Gb interface.

nse_id - Enter an integer from 0 to 65535.
peer-nsei nsei_name

Identifying a BSC by a name which is stored in the SCT.

nse_id - Enter an alphanumeric string of 1 to 64 characters..
Usage:

This command configures mapping between NSE-ID and NSE-NAME and the administrative action for each NSE (either lock or unlock). The map allows the operator to lock or unlock the BSC either by NAME or ID.

Related Commands:

lock-interface

Example

Example
Map NSE 422 to the Gb interface:

    interface gb peer-nsei
    id 422

lock-interface

Lock or unlock the interface towards the peer-entity from the SGSN based on the NSE name or NSE identifier.
Platform:

ASR 5000
Product:

SGSN
Privilege:

Security Administrator, Administrator
Syntax

    [ no ] lock-interface
    gb peer-nsei { id nse-id | name nse_name  }

no

Removes the interface map from the configuration.
peer-nsei id nsei_id

Identifies a specific NSE/BSC mapped to the Gb interface.

nse_id - Enter an integer from 0 to 65535.
peer-nsei nsei_name

Identifies a BSC by a name which is stored in the SCT.

nse_id - Enter an alphanumeric string of 1 to 64 characters.
Usage:

This command allows the operator to lock/unlock the BSC/NSE based on the NSE name or NSE identifier. Lock is used primarily to avoid the high CPU usage the SGSN can experience when BSCs attempt to reconnect after an SGSN reboot or reload. The lock stops the auto-learn procedure for the locked BSC connected via Gb over IP.

The auto-learn facility can be enabled in a staggered manner for each BSC after reboot/reload by unlocking the BSCs one-by-one.

The NSE unlock state is the default state and the NSE can accept or send any uplink and downlink data.

Related Commands:

interface

Example

Example
Lockout NSE/BSC ID 422 from the SGSN:

    lock-interface gb
    peer-nsei id 422