DHCP, RADIUS Accounting, and PMIPv6 based Session Triggers on GTPv2 over S2a Interface

The following topics are discussed:

Feature Description

This feature enables support for GTPv2 protocol on the S2a interface for DHCP, RADIUS Accounting, and PMIPv6-based session triggers for non-UICC devices.

For session triggers using the GTPv2 protocol over the S2a interface, the IMSI field in the Create-Session-Request (CSR) message will contain the decimal equivalent of the MAC address of the UE. The UE’s MN-NAI value (from the AAA Server) in the PAP container within the PCO IE in the CSR message is sent to the local P-GW, and to the PCRF server over the Gx interface. SaMOG can be configured to send the MN-NAI value in the PAP-PCO IE using the samog-s2a-gtpv2 send pco pap value mn-nai command under the Call Control Profile Configuration Mode. The local P-GW can be configured to send the MN-NAI value in the Subscription-ID AVP with MSISDN in CCR-I or CCR-U towards PCRF on the Gx interface using the subscription-id service-type samog-epdg nai command under the Policy Control Configuration Mode.

Standards Compliance

This feature complies with the following standards:

  • 3GPP TS 23.402 - “3rd Generation Partnership Project; Technical Specification Group Services and System Aspects; Architecture enhancements for non-3GPP accesses"

  • 3GPP TS 29.274 - “3rd Generation Partnership Project; Technical Specification Group Core Network and Terminals; 3GPP Evolved Packet System (EPS); Evolved General Packet Radio Service (GPRS) Tunnelling Protocol for Control plane (GTPv2-C); Stage 3"

Configuring Session Triggers on GTPv2 Over S2a Interface

Enabling MN-NAI in PCO-PAP

Use the following configuration to enable SaMOG to forward the UE's MN-NAI value in the PAP container within the PCO IE in the CSR message to P-GW: 

configure 
    call-control-profile profile_name 
        samog-s2a-gtpv2 send pco pap value mn-nai 
        end

Notes:

  • If previously configured, use the no samog-s2a-gtpv2 send pco pap value mn-nai command to remove and restore the configuration to its default value.

  • Default: Disabled

Monitoring and Troubleshooting

Show Command(s) and/or Outputs

show call-control-profile full

The following fields are available to the output of the show call-control-profile full name profile_name command in support of this feature: 

Samog-S2a-GTPv2:
     Sending PCO IE with PAP container       : Enabled with MN-NAI value
Table 1. show call-control-profile full Command Output Descriptions

Field

Description

SaMOG-S2a-GTPv2

Sending PCO IE with PAP container

Indicates whether the configuration to forward the MN-NAI value in the PAP container within the PCO IE is enabled or disabled.

Options:

  • Enabled with MN-NAI value

  • Disabled