enables 3gpp-user-location-info AVP from SWm interface for constructing ULI and
MCCC/MNC of Serving-Network IEs on S2b.
configuration is enabled and 3GPP-User-Location-Info is not received from AAA,
ePDG will not send the same in S2b CSR
If the MCC/MNC
on ServingNetwork is enabled using only CLI, on receiving
3GPP-User-Location-Info, MCC/MNC of Serving Network will be updated and sent on
3gpp-user-location-info AVP on SWm interface, ePDG provides ULI IE with TAI or
ECGI or TAI-ECGI information on CreateSession Request on S2b
3GPP-User-Location-Info Support on SWm Interface
SWm is existing
interface between AAA Server and ePDG which is used to authenticate and
authorize UE. There are various procedures between AAA server and ePDG which
are used to provide many existing information to two entities.
3GPP-User-Location-Info AVP will be provided to ePDG in DEA/AAA messages at the
time Session establishment.
Authorize Procedure: DER/DEA
This information is
provided to ePDG first during Authentication and Authorization request
procedure i.e DER/DEA or AAR/AAA(for non UICC) exchange which happens during
AVP info in
Authenticate and Authorization Answer procedure.
Information Element Name
to Diameter AVP
present, this IE will contain the location information of the TAI/ECGI/TAI-ECGI
will contain MCC and MNC received on 3GPP-User-Location-Info
AAA behavior: If
3GPP-User-Location-Info (that contains last attached LTE location of UE) is
present on AAA, it will be provided to ePDG over SWm interface during session
establishment in both UICC and non-UICC case.
ePDG Behaviour: On
receiving 3GPP-User-Location-Info ePDG stores this information and sends
TAI/ECGI/TAI-ECGI information on ULI IE and MCC/MNC information on Serving
Network IE over S2b. In case absence of this AVP, ULI will not sent and MCC/MNC
values on Serving Network IE will be populated as earlier.
Support on S2b
3GPP-User-Location-Info received by ePDG will be sent by ePDG to PGW on ULI and
Serving Network IE. This feature is CLI controlled under "call-control-profile".
Information Element Name
Location Information (ULI)
includes this IE on the S2b interface if the 3GPP-User-Location-Info AVP is
shall include MCC/MNC on this IE, derived from ULI
Configuring Use MCC
MNC Value Provided by Network
Use the following
configuration to configure Use MCC MNC Value Provided by Network.
config call-control-profile ccp1 [ remove ] epdg-s2b-gtpv2 send serving-network value end
config call-control-profile ccp1 [ remove ] epdg-s2b-gtpv2 send uli end
Below are the show commands outputs added as part of this feature to
support MCC MNC Value Provided by Network show
ePDG S2b GTPv2 IE Options:
Sending ServingNetwork[Value ULI]
epdg-s2b-gtpv2 send uli
epdg-s2b-gtpv2 send serving-network value uli
show configuration verbose:
remove epdg-s2b-gtpv2 send uli
remove epdg-s2b-gtpv2 send serving-network value uli