Sx Service Configuration Mode Commands

The Sx Service Configuration Mode is used to associate with the SAEGW service at the Control Plane, and User-Plane service at the User Plane. There is one-to-one mapping of the Sx service with the Control-Plane and User Plane.

Mode

Exec > Global Configuration > Context Configuration > Sx Service Configuration

configure > context context_name > sx-service service_name

Entering the above command sequence results in the following prompt: 

[context_name]host_name( config-sx-service )#

Important

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

bind

Use this command to bind the specified Sx service to an IP address.

Product

CUPS

Privilege

Administrator

Mode

Exec > Global Configuration > Context Configuration > Sx Service Configuration

configure > context context_name > sx-service service_name

Entering the above command sequence results in the following prompt: 

[context_name]host_name(config-sx-service)#

Syntax

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

no

Disables the command.

ipv4-address

Designates an IPv4 address of the Sx service.

ipv6-address

Designates an IPv6 address of the Sx service.

Usage Guidelines

Use this command to bind the specified Sx service to an IPv4 or IPv6 address.

instance-type

Configures the instance type for which the Sx service with Sx Demux is used under Sx Service Configuration Mode.

Product

CUPS

Privilege

Administrator

Mode

Exec > Global Configuration > Context Configuration > Sx Service Configuration

configure > context context_name > sx-service service_name

Entering the above command sequence results in the following prompt: 

[context_name]host_name(config-sx-service)#

Syntax

[ no ] instance-type { controlplane | userplane }

no

Disables the command.

controlplane

Configures Sx service with Demux on the Control-Plane instance.

userplane

Configures Sx service with Demux on the User-Plane instance.

Usage Guidelines

Use this command to configure the instance type for which the Sx service with Sx Demux is used under Sx Service Configuration Mode. Only one instance type can be configured at a given time.

sx-protocol heartbeat

Configures heartbeat parameters for Sx interface.

Product

CUPS

Privilege

Administrator

Mode

Exec > Global Configuration > Context Configuration > Sx Service Configuration

configure > context context_name > sx-service service_name

Entering the above command sequence results in the following prompt: 

[context_name]host_name(config-sx-service)#

Syntax

[ default ] sx-protocol heartbeat { interval seconds | max-retransmissions mx_value | path-failure detection-policy { control-recovery-timestamp-change | heartbeat-retry-failure | heartbeat-recovery-timestamp-change } | retransmission-timeout seconds } 
no sx-protocol heartbeat { interval | path-failure detection-policy { control-recovery-timestamp-change | heartbeat-retry-failure | heartbeat-recovery-timestamp-change }

default

Sets/restores default value assigned for specified parameter.

no

Disables the followed option.

heartbeat

Configures Sx heartbeat parameters.

interval seconds

Configures heartbeat interval (in seconds) for Sx Service. seconds must be an integer in the range of 1 to 3600.

max-retransmissions mx_value

Configures maximum retries for Sx heartbeat request. Must be followed by integer, ranging from 0 to 15. Default is 4.

retransmission-timeout seconds

Configures the heartbeat retransmission timeout for Sx Service, in seconds, ranging from 1 to 20. Default is 5.

path-failure

Specifies policy to be used when path failure happens via heartbeat request timeout.

detection-policy

Specifies the policy to be used. Default action is to do cleanup upon heartbeat request timeout.

control-recovery-time-stamp-change

Path failure is detected when the recovery timestamp in control request/response message changes.

heartbeat-retry-failure

Path failure is detected when the retries of heartbeat messages times out.

heartbeat-recovery-timestamp-change

Path failure is detected when the recovery timestamp in heartbeat request/response message changes.

Usage Guidelines

Use this command to configure heartbeat parameters for Sx interface.

Example

The following command sets the heartbeat interval to 60 seconds: 
sx-protocol heartbeat interval 60

sx-protocol pdi-optimization

Enables Packet Detection Information (PDI) Optimization feature. This feature allows the optimization of PFCP signaling through Sx Establishment and Sx Modification messages between the Control Plane and the User Plane function.

Product

CUPS

Privilege

Administrator

Mode

Exec > Global Configuration > Context Configuration > Sx Service Configuration

configure > context context_name > sx-service service_name

Entering the above command sequence results in the following prompt: 

[context_name]host_name(config-sx-service)#

Syntax

[ no ] sx-protocol pdi-optimization

no

Disables PDI optimization. By default, the CLI command is disabled.

Usage Guidelines

Use this command to enable the PDI Optimization feature.

  • PDI Optimization is enabled or disabled at PDN level. PDI Optimization is enabled for each PDN based on the configuration in sx-service. The PDN is PDI Optimization-enabled if the configuration is enabled while processing Sx Establishment Request on the Control Plane.

  • Configuration changes will not have any effect on the PDN. The configuration that is applied while processing Sx Establishment Request will be maintained throughout the lifetime of the PDN. In a multi-PDN call, each PDN has the configuration applied while PDN is set up.

  • On the User Plane, there is no separate configuration to determine whether the PDN has PDI Optimization-enabled. When Create Traffic Endpoint IE is received in Sx Establishment Request for a Sx session, then the Sx session is considered to have PDI Optimization-enabled throughout the lifetime of the session. This will not change dynamically midway, and validations are done accordingly. In case of any validation failures, Error Response is sent back to the Control Plane.

  • When there are multiple Create Traffic Endpoint IEs with the same Traffic Endpoint ID, the first Create Traffic Endpoint IE is processed, and rest are ignored. The same behavior is applicable for Created Traffic Endpoint IE, Update Traffic Endpoint IE, and Remove Traffic Endpoint IE.

sxa

Configures Sxa parameters for the Sx control packets on the S-GW.

Product

CUPS

Privilege

Administrator

Mode

Exec > Global Configuration > Context Configuration > Sx Service Configuration

configure > context context_name > sx-service service_name

Entering the above command sequence results in the following prompt: 

[context_name]host_name(config-sx-service)#

Syntax

sxa { max-retransmissions mx_value | retransmissions-timeout-ms rt_value }

By default, this command is disabled.

max-retransmissions mx_value

Configures the maximum retries for Sx control packets on the S-GW. Enter an integer. The valid value range from 0 to 15. The default value is 4.

retransmissions-timeout-ms rt_value

Configures the retransmission timeout for Sx control packets (on the S-GW), in milliseconds. Enter a value in multiples of 100. The valid values range from 1000 to 20000. The default value is 5000.

Usage Guidelines

Use this command to modify the Sxa parameters for the S-GW under Sx Service Configuration Mode.

Example

The following sets the maximum retries for Sx control packets to 5 : 
sxa max-retransmissions 5

sxab

Configures Sxab parameters for the Sx control packets on the S-GW and P-GW.

Product

CUPS

Privilege

Administrator

Mode

Exec > Global Configuration > Context Configuration > Sx Service Configuration

configure > context context_name > sx-service service_name

Entering the above command sequence results in the following prompt: 

[context_name]host_name(config-sx-service)#

Syntax

sxab { max-retransmissions mx_value | retransmissions-timeout-ms rt_value }

By default, this command is disabled.

max-retransmissions mx_value

Configures the maximum retries for Sx control packets on the S-GW and P-GW. Enter an integer. The valid value range from 0 to 15. The default value is 4.

retransmissions-timeout-ms rt_value

Configures the retransmission timeout for Sx control packets (on the S-GW and P-GW), in milliseconds. Enter a value in multiples of 100. The valid values range from 1000 to 20000. The default value is 5000.

Usage Guidelines

Use this command to modify the Sxab parameters for the S-GW and P-GW under Sx Service Configuration Mode.

Example

The following sets the maximum retries for Sx control packets to 5 : 
sxab max-retransmissions 5

sxb

Configures Sxb parameters for the Sx control packets on the P-GW.

Product

CUPS

Privilege

Administrator

Mode

Exec > Global Configuration > Context Configuration > Sx Service Configuration

configure > context context_name > sx-service service_name

Entering the above command sequence results in the following prompt: 

[context_name]host_name(config-sx-service)#

Syntax

sxb { max-retransmissions mx_value | retransmissions-timeout-ms rt_value }

By default, this command is disabled.

max-retransmissions mx_value

Configures the maximum retries for Sx control packets on the P-GW. Enter an integer. The valid value range from 0 to 15. The default value is 4.

retransmissions-timeout-ms rt_value

Configures the retransmission timeout for Sx control packets (on the P-GW), in milliseconds. Enter a value in multiples of 100. The valid values range from 1000 to 20000. The default value is 5000.

Usage Guidelines

Use this command to modify the Sxb parameters for the P-GW under Sx Service Configuration Mode.

Example

The following sets the maximum retries for Sx control packets to 5 : 
sxb max-retransmissions 5