MME Service Configuration Mode Commands

MME Service Configuration Mode Commands
 
 
The MME Service Configuration Mode is used to create and manage the LTE Mobility Management Entity (MME) services for the LTE/SAE network. This service works in conjunction with MME-HSS Service and eGTP Service.
 
 
associate
This command associates/disassociates the supportive services and policies like an Evolved GPRS Tunnelling Protocol (eGTP) service, an HSS peer service, or an MME policy subscriber map with an MME service.
Product
MME
Privilege
Administrator
Syntax
associate { { egtp-service egtp_svc_name | egtp-sv-service egtp_sv_svc_name | hss-peer-service hss_svc_name | lte-emergency-profile profile_name | network-global-mme-id-mgmt-db | sctp-param-template template_name | sgs-service sgs_svc_name | sgtpc-service sgtpc_svc_name } [ context ctx_name ] | subscriber-map map_name | tai-mgmt-db database_name }
no associate { egtp-service | egtp-sv-service | hss-peer-service | lte-emergency-profile | network-global-mme-id-mgmt-db | sctp-param-template | sgs-service | sgtpc-service | subscriber-map | tai-mgmt-db }
no
Disassociates a previously associated service with this MME service.
egtp-service egtp_svc_name
Associates an eGTP service with MME service.
egtp_svc_name specifies the name for a pre-configured eGTP service to associate with the MME service. For more information on the eGTP service, refer to the egtp-service command in the Context Configuration Mode Commands chapter.
egtp-sv-service egtp_sv_svc_name
Associates an eGTP Sv service with MME service.
egtp_sv_svc_name specifies the name for a pre-configured eGTP Sv service to associate with the MME service. For more information on the eGTP Sv service, refer to the egtp-service command in the Context Configuration Mode Commands chapter.
hss-peer-service hss_svc_name
Associates an HSS peer service with this MME service.
hss_svc_name specifies the name for a pre-configured HSS peer service to associate with the MME service and must be from 1 to 64 alpha and/or numeric characters. For more information about the HSS peer service, refer to the hss-peer-service command in the Context Configuration Mode Commands chapter and refer to the HSS Peer Service Configuration Mode Commands chapter.
lte-emergency-profile profile_name
Associates an LTE emergency profile with this MME service.
profile_name specifies the name for a pre-configured LTE emergency profile to associate with the MME service and must be from 1 to 64 alpha and/or numeric characters. For more information about the LTE emergency profile, refer to the lte-emergency-profile command in the LTE Policy Configuration Mode Commands chapter and refer to the LTE Emergency Profile Configuration Mode Commands chapter.
network-global-mme-id-mgmt-db
Associates the configured global MME ID management database with the MME service. The global MME ID management database is configured through the LTE Policy Configuration Mode using the network-global-mme-id-mgmt-db command.
sctp-param-template template_name
Associates an SCTP parameter template with the MME service.
template_name specifies the name for a pre-configured SCTP parameter template to associate with this MME service and must be from 1 to 63 alpha and/or numeric characters. For more information on the SCTP parameter template, refer to the sctp-param-template command in the Global Configuration Mode Commands chapter and refer to the SCTP Parameter Template Configuration Mode Commands chapter.
sgs-service sgs_svc_name
Associates an SGs service with this MME service.
sgs_svc_name specifies the name for a pre-configured SGs service to associate with the MME service and must be from 1 to 64 alpha and/or numeric characters. For more information on the SGs service, refer to the sgs-service command in the Context Configuration Mode Commands chapter and refer to the MME SGs Service Configuration Mode Commands chapter.
sgtpc-service sgtpc_svc_name
Associates an SGTPC service with this MME service.
sgtpc_svc_name specifies the name for a pre-configured SGTPC service to associate with the MME service and must be from 1 to 64 alpha and/or numeric characters. For more information on the SGTPC service, refer to the sgtp-service command in the Context Configuration Mode Commands chapter and/or refer to the SGTP Service Configuration Mode Commands chapter.
context ctx_name
Identifies a specific context name where the named service is configured. If this keyword is omitted, the named service must exist in the same context as the MME service.
ctx_name is name of the configured context of the named service. This can be from 1 to 63 alpha and/or numeric characters and is case sensitive.
subscriber-map map_name
Associates this MME service with a pre-configured subscriber map.
map_name specifies the name of a pre-configured subscriber map to associate with the MME service and must be from 1 to 64 alpha and/or numeric characters. For more information on subscriber maps, refer to the subscriber-map command in the LTE Policy Configuration Mode Commands chapter and refer to the LTE Subscriber Map Configuration Mode Commands chapter.
tai-mgmt-db database_name
Associates this MME service with a pre-configured TAI Management Database.
database_name specifies the name of a pre-configured TAI Management Database to associate with the MME service and must be from 1 to 64 alpha and/or numeric characters. For more information on subscriber maps, refer to the tai-mgmt-db command in the LTE Policy Configuration Mode Commands chapter and refer to the LTE TAI Management Database Configuration Mode Commands chapter.
Usage
Use this command to associate a pre-configured service or policy with an MME service.
The eGTP service provides eGTP-C protocol interface support between EPS nodes. For more information on the eGTP service and the supported interface type, refer to the eGTP Service Configuration Mode Commands chapter.
note_smallImportant: Only one eGTP service can be associated with a service. The eGTP service should be configured prior to issuing this command.
The HSS peer service provides S6a and S13 interface support via the Diameter protocol between the MME and an HSS (S6a) or EIR (S13). For more information on HSS peer service and other parameters, refer to the HSS Peer Service Configuration Mode Commands chapter.
note_smallImportant: Only one HSS peer service can be associated to a service in this release. The HSS peer service should be configured prior to issuing this command.
Caution_iconCaution: This is a critical configuration. The MME service can not be started without this configuration. Any change to this configuration would lead to restarting the MME service. Removing or disabling this configuration will stop the MME service.
Example
The following command associates a pre-configured eGTP service called egtp1 in the dst_ctx context to an MME service:
associate egtp-service egtp1 context dst_ctx
The following command associates a pre-configured HSS peer service called hss1 in the same context as MME service to an MME service:
associate hss-peer-service hss1
 
bind s1-mme
This command binds the MME service to a logical IP interface serving as the S1-MME interface.
Product
MME
Privilege
Administrator
Syntax
bind s1-mme { ipv4-address address [ ipv4-address secondary_address ] | ipv6-address address [ ipv6-address secondary_address ] } [ crypto-template name ] [ max-subscribers number ]
no bind s1-mme
no
Removes a previously configured IP address used for binding the SCTP (local bind address) to communicate with the eNodeBs using an S1-MME interface.
{ ipv4-address address [ ipv4-address secondary_address ] | ipv6-address address [ ipv6-address secondary_address ] }
Specifies the IP address in IPv4 or IPv6 notation for the interface configured as an S1-MME interface. For IPv4, address must be specified in dotted decimal notation. For IPv6, address must be specified in colon separated notation. Optionally configure a secondary IP address for either address type.
crypto-template name
Specifies the crypto template name used when implementing IP Security (IPSec) on the S1-MME interface. name must be an existing crypto template name and be from 1 to 104 alpha and/or numeric characters.
max-subscribers number
Specifies the maximum number of subscribers that can access this service on this interface. number must be an integer from 0 and 4,000,000.
Usage
Use this command to associate or tie the MME service to a specific logical IP address that will be used for binding the SCTP socket to communicate with the eNodeB using S1AP. A maximum of one IP address can be configured with this command for one MME service.
The MME passes the IP address during setting up the SCTP association with the eNodeB.
Caution_iconCaution: This is a critical configuration. The MME service can not be started without this configuration. Any change to this configuration would lead to restarting the MME service and removing or disabling this configuration will stop the MME service.
note_smallImportant: Up to two IPv4 or IPv6 addresses can be configured to support SCTP multi-homing.
Example
The following command would bind the logical IP interface with the address of 192.168.3.1 to the MME service to interact with eNodeB:
bind s1-mme ipv4-address 192.168.3.1
The following command disables a binding that was previously configured:
no bind s1-mme ipv4address
 
dns
This command associates/disassociates the Domain Name System (DNS) client service configured for DNS query in a context to select P-GW and S-GW in an MME service.
Product
MME
Privilege
Administrator
Syntax
dns { peer-mme | peer-sgsn | pgw | sgw } [ context ctx_name ]
no dns { peer-mme | pgw | sgw }
no
Disassociates a previously associated context having DNS client service configured for DNS query to select peer MME, P-GW or S-GW with this MME service.
peer-mme
This keyword associates the named context with a DNS client service for DNS query for selecting a peer MME and associating it with this MME service for inter-MME handovers.
peer-sgsn
This keyword associates the named context with a DNS client service for DNS query for selecting a peer SGSN and associating it with this MME service for inter-RAT handovers.
pgw
This keyword associates the named context with a DNS client service for DNS query for selecting a P-GW and associating it with this MME service.
sgw
This keyword associates the named context with a DNS client service for DNS query for selecting an S-GW and associating it with this MME service.
context ctx_name
This optional keyword associates the specific context name where DNS client service is configured to select a peer MME, a P-GW and/or an S-GW for this MME service. If this keyword is omitted DNS client service must be configured in the same context as this MME service.
ctx_name is name of the configured context of the DNS client service. This can be from 1 to 63 alpha and/or numeric characters and is case sensitive.
Usage
Use this command to associate a pre-configured context where a DNS client service is configured with an MME service.
The DNS Client service configured in a context provides the DNS query support to locate peer MMEs, peer-SGSNs, P-GWs, or S-GWs from an MME service. For more information on DNS Client service and support, refer to the DNS Client Service Configuration Mode Commands chapter in the Command Line Interface Reference.
A maximum of one DNS client service for a peer MME, one DNS client service for a peer SGSN, one DNS client service for a P-GW, and one DNS client service for S-GW can be associated with an MME service.
Example
The following command associates a pre-configured context dns_ctx1 where a DNS client service is configured for DNS query to P-GW from an MME service:
dns pgw context dns_ctx1
The following command associates a pre-configured context dns_ctx2 where a DNS client service is configured for DNS query to S-GW from an MME service:
dns sgw context dns_ctx2
 
emm
This command defines the Evolved Mobility Management timer parameters like timeout durations for timers for the NAS message retransmission in MME service.
Product
MME
Privilege
Administrator
Syntax
emm { implicit-detach-timeout detach_dur | mobile-reachable-timeout mob_reach_dur | t3412-timeout t3412_dur | t3413-timeout t3413_dur | t3422-timeout t3422_dur | t3423-timeout t3423_dur | t3450-timeout t3450_dur | t3460-timeout t3460_dur | t3470-timeout t3470_dur }
default emm { mobile-reachable-timeout | t3412-timeout | t3413-timeout | t3422-timeout | t3423-timeout | t3450-timeout | t3460-timeout | t3470-timeout }
no emm implicit-detach-timeout
default
Resets the specified timer timeout to the system default value.
no
Removes the specified EMM timeout definition from the configuration.
implicit-detach-timeout detach_dur
Default: 3480
Sets the timer timeout duration after which subscriber will implicitly detached from the network if there is no activity. Generally this timer value is 240 seconds (4 minutes) more than the timeout value of T3423 timer.
This timer starts when mobile reachable timer expires while the network is in EMM-IDLE mode and ISR is activated and stops when NAS signalling connection established.
detach_dur is timeout duration in seconds and must be an integer from 1 through 12000.
mobile-reachable-timeout mob_reach_dur
Default: 3480
Sets the timeout timer duration after which reachability procedure will be discarded and reattempt starts.
mob_reach_dur is timeout duration in seconds and must be an integer from 1 through 12000.
t3412-timeout t3412_dur
Default: 3240
Sets the timeout duration for T3412 timer. This timer is used for periodic tracking area update (P-TAU). When this timer expires, the periodic tracking area updating procedure starts and the timer is set to its initial value for the next start.
This timer starts when the UE goes from EMM-CONNECTED to EMM-IDLE mode and stops when the UE enters EMM-CONNECTED mode.
t3412_dur is timeout duration in seconds and must be an integer from 1 through 11160.
t3413-timeout t3413_dur
Default: 6
Sets the timeout duration for T3413 timer. The timer starts when MME initiates the EPS paging procedure to the EMM entity in the network and requests the lower layer to start paging. This timer stops for the paging procedure when a response received from the UE.
t3413_dur is timeout duration in seconds and must be an integer from 1 through 20.
t3422-timeout t3422_dur
Default: 6
Sets the timeout duration for T3422 timer. This timer starts when MME initiates the detach procedure by sending a DETACH REQUEST message to the UE and stops upon receipt of the DETACH ACCEPT message.
t3422_dur is timeout duration in seconds and must be an integer from 1 through 20.
t3423-timeout t3423_dur
Default: 3240
Sets the timeout duration for T3423 timer. This timer starts when UE enters the EMM-DEREGISTERED state or when entering EMM-CONNECTED mode. It stops while the UE is in EMM-REGISTERED.NO-CELL-AVAILABLE state and Idle mode Signalling Reduction (ISR) is activated.
t3423_dur is timeout duration in seconds and must be an integer from 1 through 11160.
t3450-timeout t3450_dur
Default: 6
Sets the timeout duration for T3450 timer. This timer starts when MME initiates the Globally Unique Temporary Identifier (GUTI) reallocation procedure by sending a GUTI REALLOCATION COMMAND message to the UE and stops upon receipt of the GUTI REALLOCATION COMPLETE message.
This timer is also used for Tracking area update procedure.
t3450_dur is timeout duration in seconds and must be an integer from 1 through 20.
t3460-timeout t3460_dur
Default: 6
Sets the timeout duration for T3460 timer. The timers starts when the network initiates the authentication procedure by sending an AUTHENTICATION REQUEST message to the UE and stops upon receipt of the AUTHENTICATION RESPONSE message.
t3460_dur is timeout duration in seconds and must be an integer from 1 through 20.
t3470-timeout t3470_dur
Default: 6
Sets the timeout duration for T3470 timer. The MME starts this timer when the network initiates the identification procedure by sending an IDENTITY REQUEST message to the UE and stops upon receipt of the IDENTITY RESPONSE message.
t3470_dur is timeout duration in seconds and must be an integer from 1 through 20.
Usage
Use this command to set EMM timers.
The following tables describe the triggers and states for timers:
EPS mobility management timers – UE side
Timer
State
Cause of Start
Normal Stop
On Expiry
T3402
•
EMM-DEREGISTERED
•
EMM-REGISTERED
•
At attach failure and the attempt counter is equal to 5.
•
At tracking area updating failure and the attempt counter is equal to 5.
•
ATTACH REQUEST sent
•
TRACKING AREA UPDATE REQUEST sent
Initiation of the attach procedure or TAU procedure
T3410
EMM-REGISTERED-INITIATED
ATTACH REQUEST sent
•
ATTACH ACCEPT received
•
ATTACH REJECT received
Start T3411 or T3402 as described in subclause 5.5.1.2.6
T3411
•
EMM-DEREGISTERED. ATTEMPTING-TO-ATTACH
•
EMM-REGISTERED. ATTEMPTING-TO-UPDATE
•
At attach failure due to lower layer failure, T3410 timeout or attach rejected with other EMM cause values than those treated in subclause 5.5.1.2.5.
•
At tracking area updating failure due to lower layer failure, T3430 timeout or TAU rejected with other EMM cause values than those treated in subclause 5.5.3.2.5.
•
ATTACH REQUEST sent
•
TRACKING AREA UPDATE REQUEST sent
Retransmission of the ATTACH REQUEST or TRACKING AREA UPDATE REQUEST
T3412
EMM-REGISTERED
In EMM-REGISTERED, when EMM-CONNECTED mode is left.
•
When entering state EMM-DEREGISTERED or
•
When entering EMM-CONNECTED mode.
Initiation of the periodic TAU procedure
T3416
•
EMM-REGISTERED-INITIATED
•
EMM-REGISTERED
•
EMM-DEREGISTERED-INITIATED
•
EMM-TRACKING-AREA-UPDATING-INITIATED
•
EMM-SERVICE-REQUEST-INITIATED
RAND and RES stored as a result of a UMTS authentication challenge
•
SECURITY MODE COMMAND received
•
SERVICE REJECT received
•
TRACKING AREA UPDATE ACCEPT received
•
AUTHENTICATION REJECT received
•
AUTHENTICATION FAILURE sent
•
EMM-DEREGISTERED or EMM-NULL entered
Delete the stored RAND and RES
T3417
EMM-SERVICE-REQUEST-INITIATED
•
SERVICE REQUEST sent
•
EXTENDED SERVICE REQUEST sent in case f and g in subclause 5.6.1.1
•
Bearers have been set up
•
SERVICE REJECT received
Abort the procedure
T3417ext
EMM-SERVICE-REQUEST-INITIATED
•
EXTENDED SERVICE REQUEST sent in case d in subclause 5.6.1.1
•
EXTENDED SERVICE REQUEST sent in case e in subclause 5.6.1.1 and the CSFB response was set to “CS fallback accepted by the UE”.
•
Inter-system change from S1 mode to A/Gb mode or Iu mode is completed
•
Inter-system change from S1 mode to A/Gb mode or Iu mode is failed
•
SERVICE REJECT received
Abort the procedure
T3418
•
EMM-REGISTERED-INITIATED
•
EMM-REGISTERED
•
EMM-TRACKING-AREA-UPDATING-INITIATED
•
EMM-DEREGISTERED-INITIATED
•
EMM-SERVICE-REQUEST-INITIATED
AUTHENTICATION FAILURE (EMM cause = #20 “MAC failure” or #26 “Non-EPS authentication unacceptable”) sent
AUTHENTICATION REQUEST received
On first expiry, the UE should consider the network as false
T3420
•
EMM-REGISTERED-INITIATED
•
EMM-REGISTERED
•
EMM-DEREGISTERED-INITIATED
•
EMM-TRACKING-AREA-UPDATING-INITIATED
•
EMM-SERVICE-REQUEST-INITIATED
AUTHENTICATION FAILURE (cause = #21 “synch failure”) sent
AUTHENTICATION REQUEST received
On first expiry, the UE should consider the network as false
T3421
EMM-DEREGISTERED-INITIATED
DETACH REQUEST sent
DETACH ACCEPT received
Retransmission of DETACH REQUEST
T3423
EMM-REGISTERED
T3412 expires while the UE is in EMM-REGISTERED.NO-CELL-AVAILABLE and ISR is activated.
•
When entering state EMM-DEREGISTERED or
•
When entering EMM-CONNECTED mode.
Set TIN to “P‑TMSI”
T3430
EMM-TRACKING-AREA-UPDATING-INITIATED
TRACKING AREA UPDATE REQUEST sent
•
TRACKING AREA UPDATE ACCEPT received
•
TRACKING AREA UPDATE REJECT received
Start T3411 or T3402 as described in subclause 5.5.3.2.6
T3440
•
EMM-REGISTERED-INITIATED
•
EMM-TRACKING-AREA-UPDATING-INITIATED
•
EMM-DEREGISTERED-INITIATED
•
EMM-SERVICE-REQUEST-INITIATED
•
EMM-REGISTERED
•
ATTACH REJECT, DETACH REQUEST, TRACKING AREA UPDATE REJECT with any of the EMM cause values #11, #12, #13, #14 or #15
•
SERVICE REJECT received with any of the EMM cause values #11, #12, #13 or #15
•
TRACKING AREA UPDATE ACCEPT received after the UE sent TRACKING AREA UPDATE REQUEST in EMM-IDLE mode with no “active” flag
•
Signalling connection released
•
Bearers have been set up
Release the signalling connection and proceed as described in subclause 5.3.1.2
T3442
EMM-REGISTERED
SERVICE REJECT received with EMM cause #39
TRACKING AREA UPDATE REQUEST sent
None
NOTE 1: The default value of this timer is used if the network does not indicate another value in an EMM signalling procedure.
NOTE 2: The value of this timer is provided by the network operator during the attach and tracking area updating procedures.
NOTE 3: The value of this timer may be provided by the network in the ATTACH ACCEPT message and TRACKING AREA UPDATE ACCEPT message. The default value of this timer is identical to the value of T3412.
NOTE 4: The value of this timer is provided by the network operator when a service request for CS fallback is rejected by the network with EMM cause #39 “CS domain temporarily not available”.
‌
EPS mobility management timers – network side
Timer
State
Cause of Start
Normal Stop
On Expiry1st, 2nd, 3rd, 4th EXPIRY (NOTE 1)
T3413
EMM-REGISTERED
Paging procedure initiated
Paging procedure completed
Network dependent
T3422
EMM-DEREGISTERED-INITIATED
DETACH REQUEST sent
DETACH ACCEPT received
Retransmission of DETACH REQUEST
T3450
EMM-COMMON-PROC-INIT
•
ATTACH ACCEPT sent
•
TRACKING AREA UPDATE ACCEPT sent with GUTI
•
GUTI REALLOCATION COMMAND sent
•
ATTACH COMPLETE received
•
TRACKING AREA UPDATE COMPLETE received
•
GUTI REALLOCATION COMPLETE received
Retransmission of the same message type, i.e. ATTACH ACCEPT, TRACKING AREA UPDATE ACCEPT or GUTI REALLOCATION COMMAND
T3460
EMM-COMMON-PROC-INIT
•
AUTHENTICATION REQUEST sent
•
SECURITY MODE COMMAND sent
•
AUTHENTICATION RESPONSE received
•
AUTHENTICATION FAILURE received
•
SECURITY MODE COMPLETE received
•
SECURITY MODE REJECT received
Retransmission of the same message type, i.e. AUTHENTICATION REQUEST or SECURITY MODE COMMAND
T3470
EMM-COMMON-PROC-INIT
IDENTITY REQUEST sent
IDENTITY RESPONSE received
Retransmission of IDENTITY REQUEST
Mobile reachable timer
All except EMM-DEREGISTERED
Entering EMM-IDLE mode
NAS signalling connection established
Network dependent, but typically paging is halted on 1st expiry
Implicit detach timer
All except EMM-DEREGISTERED
The mobile reachable timer expires while the network is in EMM-IDLE mode and ISR is activated
NAS signalling connection established
Implicitly detach the UE on 1st expiry
NOTE 1: Typically, the procedures are aborted on the fifth expiry of the relevant timer. Exceptions are described in the corresponding procedure description.
NOTE 2: The value of this timer is network dependent.
‌
EPS session management timers – UE side
Timer
State
Cause of Start
Normal Stop
On Expiry1st, 2nd, 3rd, 4th EXPIRY (NOTE 1)
T3480
PROCEDURE TRANSACTION PENDING
BEARER RESOURCE ALLOCATION REQUEST sent
ACTIVATE DEDICATED EPS BEARER CONTEXT REQUEST received or MODIFY EPS BEARER CONTEXT REQUEST received or BEARER RESOURCE ALLOCATION REJECT received
Retransmission of BEARER RESOURCE ALLOCATION REQUEST
T3481
PROCEDURE TRANSACTION PENDING
BEARER RESOURCE MODIFICATION REQUEST sent
ACTIVATE DEDICATED EPS BEARER CONTEXT REQUEST received or MODIFY EPS BEARER CONTEXT REQUEST received or DEACTIVATE EPS BEARER CONTEXT REQUEST received or BEARER RESOURCE MODIFICATION REJECT received
Retransmission of BEARER RESOURCE MODIFICATION REQUEST
T3482
PROCEDURE TRANSACTION PENDING
An additional PDN connection is requested by the UE which is not combined in attach procedure
ACTIVE DEFAULT EPS BEARER CONTEXT REQUEST received or PDN CONNECTIVITY REJECT received
Retransmission of PDN CONNECTIVITY REQUEST
T3492
PROCEDURE TRANSACTION PENDING
PDN DISCONNECT REQUEST sent
DEACTIVATE EPS BEARER CONTEXT REQUEST received or PDN DISCONNECT REJECT received
Retransmission of PDN DISCONNECT REQUEST
NOTE 1: Typically, the procedures are aborted on the fifth expiry of the relevant timer. Exceptions are described in the corresponding procedure description.
‌
This command can be repeated to set each timer as needed.
The retransmission of all type of NAS messages can be configured through nas-max-retransmissions command.
Example
The following command sets the timeout value for EPS paging procedure timer T3413 for 10 seconds.
emm t3413-timeout 10
 
enb-cache-timeout
Configures the amount of time eNodeB information is stored in cache after the eNodeB terminates the connection.
Product
MME
Privilege
Administrator
Syntax
enb-cache-timeout min
default enb-cache-timeout
default
Returns the command to it’s default value of 10.
min
Default: 10
Specifies the amount of time, in minutes that the MME stores eNodeB information after the eNodeB terminates the connection. min must be an integer value from 1 to 60.
Usage
Use this command to set the amount of time the MME stores eNodeB information in cache after the eNodeB terminates the connection.
Example
The following command sets the amount of time the MME stores eNodeB information to 15 minutes:
enb-cache-timeout 15
 
encryption-algorithm-lte
This command configures the precedence for LTE encryption algorithms to use for security procedures through this MME service.
Product
MME
Privilege
Administrator
Syntax
encryption-algorithm-lte priority1 { 128-eea0 | 128-eea1 | 128-eea2 } [ priority2 { 128-eea0 | 128-eea1 | 128-eea2 } ] [ priority3 { 128-eea0 | 128-eea1 | 128-eea2 } ]
default encryption-algorithm-lte
default
Sets the default LTE encryption algorithm for security procedures with configured priority value. Default configuration of LTE encryption algorithm is:
•
priority1 with 128-eea0 encryption algorithm
•
priority2 with 128-eea1 encryption algorithm
•
priority3 with 128-eea2 encryption algorithm
priority1
Specifies the preference of integrity algorithm for security procedures on this MME service as priority 1.
Least value has highest preference.
priority2
Specifies the preference of integrity algorithm for security procedures on this MME service as priority 2.
Least value has highest preference.
priority3
Specifies the preference of integrity algorithm for security procedures on this MME service as priority 3.
Least value has highest preference.
128-eea0
Default: Enabled
This keyword sets the Null ciphering algorithm (128-EEA0) for LTE encryption as the encryption algorithm for security procedures.
128-eea1
Default: priority2
This keyword sets the SNOW 3G synchronous stream ciphering algorithm (128-EEA1) for LTE encryption as the encryption algorithm for security procedures. SNOW 3G is a stream cipher that forms the base of the 3GPP confidentiality algorithm UEA2 and the 3GPP integrity algorithm UIA2.
128-eea2
Default: priority3
This keyword sets the Advance Encryption Standard (AES) ciphering algorithm (128-EEA2) for LTE encryption as the encryption algorithm for security procedures.
Usage
Use this command to set the LTE encryption algorithms for security procedures to use with this MME service.
Caution_iconCaution: When this command is executed, all the existing priority to algorithm mappings will be removed and the newly configured ones will be applicable for security procedures.
Caution_iconCaution: Configuration of same algorithm to multiple priorities is prohibited.
Example
The following command sets the 128-EEA1 as the LTE encryption algorithm with priority 2 for security procedures with an MME service:
encryption-algorithm-lte priority2 128-eea1
 
end
Exits the current mode and returns to the Exec Mode.
Product
All
Privilege
Administrator
Syntax
end
Usage
Change the mode back to the Exec mode.
 
esm
This command defines the Evolved Session Management timer parameters like timeout durations for timers for the retransmission of NAS messages in MME service.
Product
MME
Privilege
Administrator
Syntax
esm { t3485-timeout t3485_dur | t3486-timeout t3486_dur | t3489-timeout t3489_dur | t3495-timeout t3495_dur }
default esm { t3485-timeout | t3486-timeout | t3489-timeout | t3495-timeout }
default
Resets the specified Evolved Session Management timer timeout to the system default value.
t3485-timeout t3485_dur
Default: 8
Sets the timeout duration for T3485 timer. This timer is used for default EPS bearer context activation procedure.
This timer starts when the MME sends ACTIVATE DEFAULT EPS BEARER CONTEXT REQUEST message to UE and stops when receives ACTIVATE DEFAULT EPS BEARER CONTEXT ACCEPT or ACTIVATE DEFAULT EPS BEARER CONTEXT REJECT message from UE.
t3485_dur is timeout duration in seconds and must be an integer from 1 through 60.
t3486-timeout t3486_dur
Default: 8
Sets the timeout duration for T3486 timer. This timer is used for the default EPS bearer context modification procedure.
This timer starts when the MME sends a MODIFY EPS BEARER CONTEXT REQUEST message to the UE and stops whenit receives a MODIFY EPS BEARER CONTEXT ACCEPT received or a MODIFY EPS BEARER CONTEXT REJECT message from UE.
t3485_dur is timeout duration in seconds and must be an integer from 1 through 60.
t3489-timeout t3489_dur
Default: 4
Sets the timeout duration for T3489 timer. This timer is used for the default EPS bearer context deactivation procedure.
This timer starts when the MME sends an ESM INFORMATION REQUEST message to the UE and stops when receives a ESM INFORMATION RESPONSE message from the UE.
t3495_dur is timeout duration in seconds and must be an integer from 1 through 60.
t3495-timeout t3495_dur
Default: 8
Sets the timeout duration for T3495 timer. This timer is used for default EPS bearer context deactivation procedure.
This timer starts when the MME sends a DEACTIVATE EPS BEARER CONTEXT REQUEST message to UE and stops when receives DEACTIVATE EPS BEARER CONTEXT ACCEPT or DEACTIVATE EPS BEARER CONTEXT REJECT message from UE.
t3495_dur is timeout duration in seconds and must be an integer from 1 through 60.
Usage
Use this command to set Evolved Session Management timers.
Following tables describe the triggers and states for timers:
EPS session management timers – Network side
Timer
State
Cause of Start
Normal Stop
On Expiry1st, 2nd, 3rd, 4th EXPIRY (NOTE 1)
T3485
BEARER CONTEXT ACTIVE PENDING
•
ACTIVATE DEFAULT EPS BEARER CONTEXT REQUEST sent
•
ACTIVATE DEDICATED EPS BEARER CONTEXT REQUEST sent
•
ACTIVATE DEFAULT EPS BEARER CONTEXT ACCEPT received or
•
ACTIVATE DEFAULT EPS BEARER CONTEXT REJECT received or
•
ACTIVATE DEDICATED EPS BEARER CONTEXT ACCEPT received or
•
ACTIVATE DEDICATED EPS BEARER CONTEXT REJECT received
Retransmission of the same message
T3486
BEARER CONTEXT MODIFY PENDING
MODIFY EPS BEARER CONTEXT REQUEST sent
•
MODIFY EPS BEARER CONTEXT ACCEPT received or
•
MODIFY EPS BEARER CONTEXT REJECT received
Retransmission of MODIFY EPS BEARER CONTEXT REQUEST
T3489
PROCEDURETRANSACTION PENDING
ESM INFORMATION REQUEST sent
ESM INFORMATION RESPONSE received
Retransmission of ESM INFORMATION REQUEST on 1st and 2nd expiry only
T3495
BEARER CONTEXT INACTIVE PENDING
DEACTIVATE EPS BEARER CONTEXT REQUEST sent
DEACTIVATE EPS BEARER CONTEXT ACCEPT received
Retransmission of DEACTIVATE EPS BEARER CONTEXT REQUEST
NOTE 1: Typically, the procedures are aborted on the fifth expiry of the relevant timer. Exceptions are described in the corresponding procedure description.
‌
This command can be repeated to set each timer as needed.
The retransmission of all type of NAS messages can be configured through nas-max-retransmissions command.
Example
The following command sets the timeout value for default EPS bearer context activation procedure timer T3485 for 10 seconds.
esm t3485-timeout 10
 
exit
Exits the current mode and returns to the previous mode.
Product
All
Privilege
Administrator
Syntax
exit
Usage
Return to the previous mode.
 
gtpv2
Configures GTPv2 piggybacking support from the MME to the P-GW. A piggybacking flag is sent by the MME to a P-GW in the S11 “Create Session Request” message and determines whether dedicated bearer creation (Create Bearer Request) is piggybacked onto the “Create Session Response” message or not.
Product
MME
Privilege
Administrator
Syntax
[ default | no ] gtpv2 piggybacking
default
Returns the command to it’s default setting of enabled.
no
Disables the feature.
piggybacking
Specifies that piggybacking is to be performed by the P-GW.
Usage
Use this command to enable the sending of a piggybacking flag to the P-GW over the S11 interface requesting that the Create Bearer Request message is piggybacked on the Create Session Response message (sent from the P-GW to the MME.
Example
The following command disables this feature:
no gtpv2 piggybacking
 
heuristic-paging
Enables/disables the heuristic or optimized paging feature for the service.
Product
MME
Privilege
Administrator
Syntax
[ default | no ] heuristic-paging
default
Returns the command to it’s default setting of disabled.
no
Disables the feature.
Usage
Use this command to enable or disable the heuristic paging feature for the service. Also known as idle-mode paging, enabling this feature prompts the MME service to keep track of the eNodeBs to which the access terminal (AT) most commonly attaches, thus reducing the signalling otherwise associated with continuous paging.
note_smallImportant: Optimized Paging is a licensed feature and will not appear as a command option unless the proper licensed is installed.
 
integrity-algorithm-lte
This command configures the precedence of LTE integrity algorithms to use for security procedures through this MME service. By default integrity algorithm is enabled on MME service, which cannot be disabled.
Product
MME
Privilege
Administrator
Syntax
integrity-algorithm-lte priority1 { 128-eia1 | 128-eia2 } [ priority2 { 128-eia1 | 128-eia2 } ]
default integrity-algorithm-lte
default
Removes the preconfigured integrity algorithm and sets the default LTE integrity algorithm for security procedures. Default configuration of LTE integrity algorithm is:
•
priority1 with 128-eia1 integrity algorithm
•
priority2 with 128-eia2 integrity algorithm
priority1
Specifies the preference of integrity algorithm for security procedures on this MME service as priority 1.
This is the mandatory and default priority keyword.
priority2
Specifies the preference of integrity algorithm for security procedures on this MME service as priority 2.
128-eia1
Default: priority1
This keyword sets the SNOW 3G synchronous stream ciphering algorithm (128-EIA1) for LTE integrity as the integrity algorithm for security procedures. SNOW 3G is a stream cipher that forms the base of the 3GPP confidentiality algorithm UEA2 and the 3GPP integrity algorithm UIA2.
128-eia2
Default: Enabled
This keyword sets the Advance Encryption Standard (AES) ciphering algorithm (128-EIA2) for LTE integrity as the integrity algorithm for security procedures.
Usage
Use this command to set the LTE integrity algorithms for security procedures to use with this MME service.
warning2_smallWarning: Integrity algorithm is a mandatory aspect and can not be disabled in MME service.
Caution_iconCaution: When this command is executed, all the existing priority to algorithm mappings will be removed and the newly configured ones will be applicable for security procedures.
Caution_iconCaution: Configuration of same algorithm to multiple priorities is prohibited.
Example
The following command sets the AES ciphering algorithms (128-EIA2) as the LTE integrity algorithm with priority as 1 for security procedures with an MME service:
integrity-algorithm-lte priority1 128-eia2
 
location-reporting
This command enables the UE location reporting function on the MME service.
Product
MME
Privilege
Administrator
Syntax
[ no | default ] location-reporting
default
Disables the location reporting feature on MME service.
no
Disables the location reporting feature on MME service.
Usage
Use this command to enable/disable the UE location reporting feature on the MME service. The MME forwards a location report request, for a specific UE, from the P-GW to the eNodeB.
note_smallImportant: Location reporting, also known as User Location Information (ULI) Reporting, is a licensed feature and requires the purchase of the ULI Reporting feature license.
Example
The following command sets the MME service to allow for location reporting for UEs:
location-reporting
 
max-bearers per-subscriber
This command specifies the maximum number of EPS bearers that a subscriber may simultaneously use to access this MME service.
Product
MME
Privilege
Administrator
Syntax
max-bearers per-subscriber max_bearer
default max-bearers per-subscriber
default
Configures the maximum EPS bearers for a subscriber to use simultaneously to default value of 11.
max_bearer
Default: 11
Specifies the maximum number of EPS bearers for a subscriber may simultaneously use to access this MME service.
max_bearer can be configured to any integer value between 1 and 11.
Usage
Use this command to set the maximum number of EPS bearers that a subscriber may simultaneously use to access this MME service.
Example
The following command specifies that a maximum of 6 simultaneous EPS bearers can be facilitated for a subscriber at any given time:
max-bearers per-subscriber 6
 
max-paging-attempts
This command configures the maximum number of paging attempt retransmission allowed for network requested service creation to a subscriber while first attempt failed.
Product
MME
Privilege
Administrator
Syntax
max-paging-attempts max_paging_retry
default max-paging-attempts
default
Configures the maximum number of retransmission of paging request to default value of 3.
max_paging_retry
Default: 3
Specifies the maximum number of paging attempt retransmission allowed for network requested service creation to a subscriber while first attempt failed.
max_paging_retry can be configured to any integer value between 1 and 10.
Usage
Use this command to set the maximum number of paging attempt retransmission allowed for network requested service creation to a subscriber while first attempt failed.
Example
The following command specifies that a maximum of 6 paging attempt retransmission allowed for network requested service creation to a subscriber while first attempt failed for a subscriber at any given time:
max-paging-attempts 6
 
max-pdns per-subscriber
This command specifies the maximum number of PDNs that a subscriber may simultaneously access through this MME service.
Product
MME
Privilege
Administrator
Syntax
max-pdns per-subscriber max_pdn
default max-pdns per-subscriber
default
Configures the maximum PDNs for a subscriber simultaneously access through this MME service to default value of 3 PDNs.
max_pdn
Default: 3
Specifies the maximum number of PDNs that a subscriber may simultaneously access through this MME service.
max_pdn can be configured to any integer value between 1 and 11.
Usage
Use this command to set the maximum number of PDNs that a subscriber may simultaneously access through this MME service.
Example
The following command specifies that a maximum of 2 simultaneous PDNs can be accessed by a subscriber at any given time through this MME service:
max-pdns per-subscriber 2
 
mme-id
This command configures the MME identifier with an MME service. MME identifier is constructed with MME group ID and MME Code.
Product
MME
Privilege
Administrator
Syntax
mme-id group-id grp_id mme-code mme_code
no mme-id
no
Removes the configured MME identifier for this MME service.
Caution_iconCaution: Removing the MME identifier is a disruptive operation; the MME service shall be removed from the service.
group-id grp_id
Specifies the group identifier for the group of which this MME belongs.
grp_id must be an integer value from 0g through 65535.
mme-code mme_code
Specifies the unique code for this MME service.
mme_code must be an integer value from 0 through 255.
Usage
Use this command to set the MME identifier for this MME service. This MME identifier will be the identity of this MME in network.
Caution_iconCaution: Changing or removing the MME identifier is a disruptive operation; the MME service shall be re-started or removed from service.
Example
The following command configures the MME identifier with group id as 41025 and MME code as 101 for this MME service:
mme-id group-id 41025 mme-code 101
 
mmemgr-recovery
Configures the recovery action for the MME manager.
Product
MME
Privilege
Administrator
Syntax
mmemgr-recovery { no-reset | reset-s1-peers }
default mmemgr-recovery
default
Resets the command to its default value.
no-reset
Specifies that the recovery action is to NOT reset S1 peers.
reset-s1-peers
Specifies that the recovery action is TO reset S1 peers.
Usage
Use this command to set a recovery action for the MME Manager.
Example
The following command configures the MME Manager recovery action to reset all S1 peers:
mmemgr-recovery reset-s1-peers
 
msc
Specifies the IP address of the enhanced Mobile Switching Center (eMSC) server for the MME service. This parameter is used for communicating with the eMSC server over the Sv interface in support of the Single Radio Voice Call Continuity (SRVCC) feature.
Product
MME
Privilege
Administrator
Syntax
msc ip_address
no msc
no
Removes the eMSC IP address configuration from the MME service.
ip_address
Specifies the IP address in IPv4 or IPv6 notation of the peer eMSC server. For an IPv4 address, ip_address must be specified in dotted decimal notation. For an IPv6 address, ip_address must be specified in colon separated notation.
Usage
Use this command to specify the IP address of the peer eMSC server used during SRVCC handovers.
Example
The following command specifies an IPv4 address for the peer eMSC server as 1.2.3.4:
msc 1.2.3.4
 
nas-max-retransmission
This command sets the retransmission counter for all type of NAS messages in an MME service.
Product
MME
Privilege
Administrator
Syntax
nas-max-retransmissions nas_retrans_count
default nas-max-retransmissions
default
Resets the retransmission counter to the system default value of 4.
nas_retrans_count
Default: 4
Sets the maximum number of retransmission of NAS messages permitted during any procedure after which activation procedure will be discarded.
nas_retrans_count is number of retransmission allowed and must be an integer from 1 through 10.
Usage
Use this command to set maximum number of retries allowed for any type of NAS messages.
NAS Messages send by the MME which require a response from the UE for procedure completion are retransmitted. Retransmission happens based on timer expiry. The timers are configured through emm and esm command. The NAS messages are retransmitted as per configuration, and if no response from the UE is received, the pending transaction is abandoned. If the transaction is a DETACH or PDN DISCONNECT REQUEST, the transaction is completed without further UE signaling.
The timeout duration configured through emm and esm command will be applicable between two retries.
Example
The following command sets the maximum number of retries allowed as 4 for all type of NAS messages in an MME service.
default nas-max-retransmissions
 
nri
Configures the network resource identifier (NRI) length used for source SGSN discovery via NRI-FQDN based DNS resolution.
Product
MME
Privilege
Administrator
Syntax
[ no ] nri length length plmn-id mcc mcc_value mnc mnc_value
no
Removes a configured NRI length configuration.
length length
Specifies the number of bits to be used in the P-TMSI (bits 23 to 18) to define the NRI. length must be an integer value from 1 to 8.
plmn-id mcc mcc_value mnc mnc_value
Specifies the PLMN-ID of the SGSN pool.
mcc mcc_value: Specifies the mobile country code (MCC) part of PLMN identifier. mcc_value must be an integer value from 100 through 999.
mnc mnc_value: Specifies the mobile network code (MNC) part of PLMN identifier. mnc_value must be an integer value from 00 through 999.
Usage
Use this command to retrieve the NRI (identity of an SGSN) stored in bits 23 to 18 of the packet-temporary mobile subscriber identity (P-TMSI). Up to eight NRI length values can be configured.
In the absence of this configuration, the MME treats the NRI as invalid. The MME will use plain RAI-based FQDN (and not NRI-based FQDN) for DNS queries made to resolve the source SGSN.
Example
The following command creates an NRI length of 5 and associates it with an SGSN pool with the PLMN-ID of 12323:
nri length 5 plmnid mcc 123 mnc 23
 
peer-mme
Configures parameters that, when matched by another MME, specifies that MME as a peer for inter-MME relocations.
Product
MME
Privilege
Administrator
Syntax
peer-mme { gummei mcc number mnc number group-id id mme-code code address ipv4_address | tai-match priority value mcc number mnc number tac { area_code | any | start_area_code to end_area_code } address ipv4_address }
no peer-mme { gummei mcc number mnc number group-id id mme-code code | tai-match priority value
no
Removes the configured peer MME GUMMEI or TAI match priority from this service.
gummei mcc number mnc number group-id id mme-code code address ipv4_address
Specifies that an MME with values matching those configured in this Globally Unique MME Identifier (GUMMEI) is to be considered a peer MME. This variable supports the lookup of an IP address for a peer MME based on the exact match of the supporting keyword below (which make up the GUMMEI).
mcc number: Sets the mobile country code (MCC) for peer match. number must be an integer value between 100 and 999.
mnc number: Sets the mobile network code (MNC) for this peer match. number must be an integer value between 00 and 999.
group-id id: Specifies the group identifier for the group to which this MME belongs. id must be an integer value from 32768 through 65535.
mme-code code: Specifies the unique code for an MME service. code must be an integer value from 0 through 255.
address ipv4_address: Specifies the IPv4 address of the peer MME. ipv4_address must be entered in dotted decimal notation.
tai-match priority value mcc number mnc number tac { area_code | any | start_area_code to end_area_code } address ipv4_address
Specifies that an MME with values matching those configured in this Tracking Area Identifier (TAI) match, is to be considered a peer MME. This keyword provides a priority-ordered list of TAI descriptions where the TAC field may be either an exact value, a range of values, or a “wildcard” value. It also provides an IP address of the peer MME corresponding to the TAI description.
priority value:
mcc number: Sets the mobile country code (MCC) for peer match. number must be an integer value between 100 and 999.
mnc number: Sets the mobile network code (MNC) for this peer match. number must be an integer value between 00 and 999.
tac area_code: Sets a specific Tracking Area Code (TAC) for the peer MME match. area_code must be an integer value from 1 to 65535.
tac any: Specifies that any TAC value can be considered for a peer MME.
tac start_area_code to end_area_code: Specifies a range of TACs. MMEs within this range and matching the rest of the criteria in this command are to be considered peer MMEs. start_area_code and end_area_code must be integer values from 1 to 268435455.
address ipv4_address: Sets a specific IPv4 address for this TAI peer MME match. ipv4_address must be entered in dotted decimal notation.
Usage
Use this command to configure parameters that, when matched by another MME, specifies that MME as a peer for inter-MME relocations.
This command allows configuration for two relocation scenarios:
•
gummei: an MME receives either an Attach or a TAU request with a GUTI that originated from another MME.
•
tai-match: an MME receives an S1 Handover Required message and must select a new MME based on the TAI.
Up to 32 peer-mme gummei or tai-match entries may be configured per MME service.
Example
The following command identifies a peer MME with GUMMEI parameters:
peer-mme gummei mcc 123 mnc 12 group-id 40000 mme-code 100 address 1.2.3.4
 
peer-sgsn
Statically configures peer SGSN environments to facilitate MME-SGSN relocations over S3 or Gn/Gp interfaces.
Product
MME
Privilege
Administrator
Syntax
peer-sgsn rai mcc mcc_value mnc mnc_value [ nri value ] rac value lac value address ip_address capability [ gn ] [ gp ] [ s16 ] [ s3 ]
no peer-sgsn rai mcc mcc_value mnc mnc_value [ nri value ] rac value lac value
peer-sgsn rnc-id mcc mcc_value mnc mnc_value rnc value address ip_address capability [ gn ] [ gp ] [ s16 ] [ s3 ]
no peer-sgsn rnc-id mcc mcc_value mnc mnc_value rnc value
rai
Configures Routing Area Identity (RAI) parameters used to facilitate a lookup for a specific peer SGSN.
rnc-id
Configures Radio Network Controller Identification (RNC-ID) parameters used to facilitate a lookup for a specific peer SGSN.
mcc mcc_value
Specifies the mobile country code (MCC) part of a PLMN identifier.
mcc_value must be an integer value from 100 through 999.
mnc mnc_value
Specifies the mobile network code (MNC) part of a PLMN identifier.
mnc_value must be an integer value from 00 through 999.
nri value
Specifies the Network Resource Identifier (NRI) value used as an additional identity along with the RAC within the RAI parameters. value must be an integer from 0 to 65535.
rac value
Specifies the Routing Area Code (RAC) used to facilitate a lookup for a specific peer SGSN. value must be an integer from 0 to 255.
rnc value
Specifies the Radio Network Controller (RNC) identification number used to facilitate a lookup for a specific peer SGSN. value must be an integer from 0 to 65535.
lac value
Specifies the Location Area Code (LAC) value used to facilitate a lookup for a specific peer SGSN. value must be an integer from 0 to 65535.
address ip_address
Specifies the IP address of the peer SGSN. ip_address must be an existing IPv4 or IPv6 address of an existing SGSN. For IPv4, ip_address must be specified in dotted decimal notation. For IPv6, ip_address must be specified in colon separated notation.
capability [ gn ] [ gp ] [ s16 ] [ s3 ]
Configures the GTP interface capability of the peer SGSN.
gn: Specifies that the peer SGSN is capable of communication over the Gn interface.
gp: Specifies that the peer SGSN is capable of communication over the Gp interface.
s16: Specifies that the peer SGSN is capable of communication over the S16 interface.
s3: Specifies that the peer SGSN is capable of communication over the S3 interface.
Usage
Use this command to configure parameters that, when matched by an SGSN, specifies that SGSN as a peer for inter-RAT relocations.
This command allows configuration for two relocation scenarios:
•
rai: the lookup of an IP address for a peer MME based on the exact match of the RAI (and optionally NRI).
•
rnc-id: the lookup of an IP address for a peer SGSN based on the exact match of the RNC-ID.
Up to 32 peer-SGSN RAI and RNC-ID entries may be configured per MME service.
Example
The following command configures an SGSN lookup using RNC-ID parameters with Gn interface capability:peer-sgsn rnc-id mcc 123 mnc 12 rnc 2000 address 1.2.3.4 capability gn
 
pgw-address
This command configures the PDN Gateway (P-GW) address to use P-MIP protocol for S5 and S8 interface and other parameters with MME service. By default S5 and S8 use GTP protocol for this.
Product
MME
Privilege
Administrator
Syntax
pgw-address address [ s5-s8-protocol pmip ] [ weight value ]
no pgw-address address [ s5-s8-protocol pmip ]
no
Removes a previously configured IP address of P-GW along with S5 and S8 interface of P-MIP protocol type and other parameters from this MME service.
address
Specifies the IP address of the P-GW.
address must be an IP address in IPv4 or IPv6 notation.
s5-s8-protocol pmip
Specifies that P-MIP type of protocol to use for S5 and S8 interfaces with P-GW. By default S5 and S8 interface uses GTP protocol.
pmip Sets the protocol to Proxy-MIP for S5 and S8 interface as by default GTP is the applicable protocol.
weight value
Assigns the weight to P-GW address to use as a preferred P-GW.
value must be an integer from 1 through 100. Lowest value has the least preference.
Usage
Use this command to configure the PDN Gateway (P-GW) addresses to use with MME service. This command also changes the default protocol or GTP to P-MIP for the S5 and S8 interface and weight to share the load between associated P-GWs. A maximum of 16 P-GW addresses can be configured with this command.
This command only changes the use of protocol in S5 and S8 interface. By default P-GW uses GTP protocol for S5 and S8 interfaces. By this command user can change the protocol to P-MIP for S5 and S8 interface.
When weight is used, the weights of the P-GW(s) (that are operational) are totaled and then weighted round-robin selection is used to distribute new default bearer context among the P-GW(s) according to their weights.
note_smallImportant: A maximum of 16 P-GW addresses can be configured per MME service.
Example
The following command associates the P-GW IP address of 192.168.3.1 to the MME service with S5 and S8 protocol as P-MIP and weight as 90:
pgw-address 192.168.3.1 s5-s8-protocol pmip weight 90
The following command removes the above configured P-GW IP address and other parameters:
no pgw-address 192.168.3.1 s5-s8-protocol pmip
 
plmn-id
This command configures the Public Land Mobile Network (PLMN) identifier for this MME service. PLMN identifier is made of Mobile Country Code (MCC) and Mobile Network Code (MNC). A maximum of 16 PLMN id can be configured in an MME service.
Product
MME
Privilege
Administrator
Syntax
plmn-id mcc mcc_value mnc mnc_value
no plmn-id mcc mcc_value mnc mnc_value
no
Removes the configured PLMN identifier for this MME service.
Caution_iconCaution: Removing the PLMN identifier is a disruptive operation; the MME service shall be re-started.
mcc mcc_value
Specifies the mobile country code (MCC) part of PLMN identifier.
mcc_value must be an integer value from 100 through 999.
mnc mnc_value
Specifies the mobile network code (MNC) part of PLMN identifier.
mnc_value must be an integer value from 00 through 999.
Usage
Use this command to set the PLMN identifier for this MME service.
Caution_iconCaution: Changing or removing the PLMN identifier is a disruptive operation; the MME service shall be re-started.
A maximum of 16 PLMN identifiers are supported for an MME service.
Example
The following command configures the PLMN identifier with MCC value as 102 and MNC value as 20 for this MME service:
plmn-id mmc 102 mnc 20
 
policy attach
Configures parameters for the UE attach procedure.
Product
MME
Privilege
Administrator
Syntax
policy attach { imei-query-type { imei | imei-sv | none } [ verify-equipment-identity [ allow-on-eca-timeout | deny-greylisted | deny-unknown | verify-emergency ] ] | set-ue-time { disable | enable }
default policy attach { imei-query-type | set-ue-time }
default
Returns the command to it’s default setting of none for imei-query-type and disabled for set-ue-time.
imei-query-type { imei | imei-sv | none }
Configures the IMEI query type for UE attach.
imei: Specifies that the MME is required to query the UE for it’s International Mobile Equipment Identity (IMEI).
imei-sv: Specifies that the MME is required to query the UE for it’s International Mobile Equipment Identity - Software Version (IMEI-SV).
none: Specifies that the MME does not need to query fro IMEI or IMEI-SV.
verify-equipment-identity [ allow-on-eca-timeout | deny-greylisted | deny-unknown | verify-emergency ]
Specifies that the identification (IMEI or IMEI-SV) of the UE is to be performed by the Equipment Identity Register (EIR) over the S13 interface.
allow-on-eca-timeout: Configures the MME to allow equipment that has timed-out on ECA during the attach procedure.
deny-greylisted: Configures the MME to deny grey-listed equipment during the attach procedure.
deny-unknown: Configures the MME to deny unknown equipment during the attach procedure.
verify-emergency: Configures the MME to ignore the IMEI validation of the equipment during the attach procedure in emergency cases.
This is the default for the equipment identity verification option.
set-ue-time { disable | enable }
Configures the MME to set the time in the UE during the attach procedure. Default: disabled.
Usage
Use this command to configure various MME settings used during the UE attach procedure.
Example
The following command configures the MME to query the UE for it’s IMEI and to verify the UEs equipment identity over the S13 interface with an EIR:
policy attach imei-query-type imei verify-equipment-identity
 
policy idle-mode
This command configures the user-defined policies of session management for LTE subscriber in an MME service.
Product
MME
Privilege
Administrator
Syntax
policy idle-mode detach { explicit | implicit }
[ default ] policy idle-mode detach
default
Sets the policy of idle mode detach for a subscriber to its default behavior as implicit.
idle-mode detach
This keyword configures the IDLE mode detach behavior of a UE.
detach
This keyword defines the detach procedure while UE is in IDLE mode.
explicit
Default: disabled
This keyword enables the explicit detach while a UE is in IDLE mode. System will page UE before detach procedure started and then perform explicit detach procedure.
implicit
Default: Enabled
This keyword enables the implicit detach while a UE is in IDLE mode. System never send any message to UE before detach and performs explicit detach procedure immediately.
Usage
Use this command to set the user-defined policies for session management in this MME service.
Example
The following command sets the idle mode detach policy to explicit for a user in this MME service:
policy idle-mode detach explicit
 
policy inter-rat
This command enables/disables establishment of indirect data forwarding tunnels for Gn/Gp-based SRNS relocations.
Product
MME
Privilege
Administrator
Syntax
policy inter-rat indirect-forwarding-tunnels always
no policy inter-rat indirect-forwarding-tunnels
no
Disables the function.
indirect-forwarding-tunnels always
Enables establishment of indirect data forwarding tunnels for Gn/Gp-based SRNS relocations.
Usage
Use this command to enable or disable establishment of indirect data forwarding tunnels for Gn/Gp-based SRNS relocations.
Example
The following command enables establishment of indirect data forwarding tunnels for Gn/Gp-based SRNS relocations:
policy inter-rat indirect-forwarding-tunnels always
 
policy network
This command configures the MME to indicate to the P-GW that all peer SGSNs support dual-addressing for bearers and, subsequently, dual-addressing must be supported for all IPv4 and IPv6 PDNs. Dual-addressing on SGSNs is based on UE capability to support inter-rat roaming.
Product
MME
Privilege
Administrator
Syntax
[ default | no ] policy network dual-addressing-supported
default
Returns the command to it’s default setting of disabled.
no
Removes the ability to send dual-addressing support messaging from the MME to the P-GW.
dual-addressing-supported
Specifies that the MME shall indicate to the P-GW that dual-addressing is supported.
Usage
Use this command to configure the MME to send messaging to the P-GW that indicate that all peer SGSNs support dual-addressing for bearers and, subsequently, dual-addressing must be supported for all IPv4 and IPv6 PDNs.
note_smallImportant: This command can be used for Pre-release 8 and Release 8 SGSNs.
 
policy overload
This command configures the traffic overload policy to control congestion in this service.
Product
MME
Privilege
Administrator
Syntax
policy overload { drop | reject }
default policy overload
default
Sets the traffic overload policy action to default behavior of reject.
drop
Default: Disabled
Specifies that the system is to drop the incoming packets with new session requests to avoid overload on MME node.
reject
Default: Enabled
This keyword configures the system to reject the new session/call request and responds with a reject message when threshold for allowed call session is crossed on MME node.
Usage
Use this command to set the user-defined policies for new call connection attempted during overload in an MME service.
Congestion policies at the service-level can be configured for service. When congestion control functionality is enabled at service level, these policies dictate how services respond should the system detect that a congestion condition threshold has been crossed.
Example
The following command sets the nw call connect policy to reject the new session/call request in an MME service:
policy overload reject
 
policy pdn-reconnection
This command configures the action by the MME when a PDN connection request to an already connected APN is being processed by the MME service.
Product
MME
Privilege
Administrator
Syntax
policy pdn-reconnection { multiple | reject | restart }
[ default ] policy pdn-reconnection
default
Sets the policy of PDN reconnection to its default behavior of reject.
multiple
Default: Disabled
This keyword allows multiple connections to a PDN with same APN and PDN Type. In this case, the existing connection is left unchanged, and the MME attempts to establish an additional connection to the PDN.
reject
Default: Enabled
This keyword configures set the action of MME to deny or reject the request, by sending a PDN connection reject command. This is the default behavior.
restart
Default: Disabled
This keyword deletes the existing connection and initiate an attempt to establish a new connection.
Usage
Use this command to set the user-defined policies for PDN reconnection attempt procedures initiated by UE in an MME service.
While a UE is attached, the UE can request connections to PDNs. The PDNs are identified by APN (Access Point Name) and PDN Type (ipv4, ipv6 or ipv4v6).
If the UE requests connection to a PDN for which a connection with the same APN name and PDN type already exists, the MME can; 1) deny or Reject the request, by sending a PDN connection reject command; 2) allow multiple connections to a PDN with same APN and PDN Type; or 3) delete the existing connection, and attempt to establish a new connection.
Example
The following command sets the PDN reconnect policy to delete the existing PDN and start the attempt to establish a new connection in an MME service:
policy pdn-reconnection restart
 
policy s1-reset
This command configures how the MME responds to an S1 interface reset.
Product
MME
Privilege
Administrator
Syntax
policy s1-reset { detach-ue | idle-mode-entry }
default policy s1-reset
default
Returns the command to it’s default setting of idle-mode-entry.
{ detach-ue | idle-mode-entry }
Specifies the action to perform when the S1 interface is reset.
detach-ue: Specifies that UEs are to be detached from the service upon S1 interface reset.
idle-mode-entry: Specifies that UEs are to be placed into an idle mode condition during S1 interface reset.
Usage
Use this command to configure how the MME reacts to an S1 interface reset condition.
Example
The following command configures the MME to place UEs into an idle state while the S1 interface is being reset:
s1-reset idle-mode-entry
 
policy sctp-down
This command configures how the MME responds to a failure of the SCTP connection from the eNodeB.
Product
MME
Privilege
Administrator
Syntax
policy sctp-down { detach-ue | idle-mode-entry }
default policy sctp-down
default
Returns the command to it’s default setting of idle-mode-entry.
{ detach-ue | idle-mode-entry }
Specifies the action to perform when the SCTP connection from the eNodeB fails.
detach-ue: Specifies that UEs are to be detached from the service upon SCTP failure.
idle-mode-entry: Specifies that UEs are to be placed into an idle mode condition upon SCTP failure.
Usage
Use this command to configure how the MME reacts to an SCTP connection failure condition.
Example
The following command configures the MME to place UEs into an idle state while the SCTP connection from the eNodeB fails:
sctp-down idle-mode-entry
 
policy tau
Configures parameters for the tracking area update (TAU) procedure.
Product
MME
Privilege
Administrator
Syntax
policy tau { imei-query-type { imei | imei-sv | none } [ verify-equipment-identity [ allow-on-eca-timeout | deny-greylisted | deny-unknown | verify-emergency ] ] | set-ue-time { disable | enable }
default policy tau { imei-query-type | set-ue-time }
default
Returns the command to it’s default setting of none for imei-query-type and disabled for set-ue-time.
imei-query-type { imei | imei-sv | none }
Configures the IMEI query type for TAUs.
imei: Specifies that the MME is required to query the UE for it’s International Mobile Equipment Identity (IMEI).
imei-sv: Specifies that the MME is required to query the UE for it’s International Mobile Equipment Identity - Software Version (IMEI-SV).
none: Specifies that the MME does not need to query for IMEI or IMEI-SV.
verify-equipment-identity [ allow-on-eca-timeout | deny-greylisted | deny-unknown | verify-emergency ]
Specifies that the identification (IMEI or IMEI-SV) of the UE is to be performed by the Equipment Identity Register (EIR) over the S13 interface.
allow-on-eca-timeout: Configures the MME to allow equipment that has timed-out on ECA during the attach procedure.
deny-greylisted: Configures the MME to deny grey-listed equipment during the attach procedure.
deny-unknown: Configures the MME to deny unknown equipment during the attach procedure.
verify-emergency: Configures the MME to ignore the IMEI validation of the equipment during the attach procedure in emergency cases.
set-ue-time { disable | enable }
Configures the MME to set the time in the UE during the TAU procedure. Default: disabled.
Usage
Use this command to configure various MME settings used during the tracking area update (TAU) procedure.
Example
The following command configures the MME to query the UE for it’s IMEI and to verify the UEs equipment identity over the S13 interface with an EIR:
policy tau imei-query-type imei verify-equipment-identity
 
relative-capacity
Configures a relative capacity variable that is sent o the eNodeB for use in selecting an MME in order to load balance the pool.
Product
MME
Privilege
Administrator
Syntax
relative-capacity number
default relative-capacity
default
Returns the command to it’s default setting of 255.
number
Specifies the relative capacity or weight of an MME compared to others in an MME pool. number must be an integer value from 0 to 255. Default: 255
Usage
Use this command to configure the relative capacity or weight of this MME in comparison to other MMEs in a pool. This value is sent to the eNodeB in the S1AP S1 SETUP RESPONSE message.
If this value is changed after the S1 interface is initialized, the MME CONFIGURATION UPDATE message is used to update the eNodeB with the change.
Example
The following command sets this MME with a relative capacity or weight of 100:
relative-capacity 100
 
s1-mme ip
Configures the quality of service (QoS) differentiated service code point (DSCP) used when sending data packets of a particular 3GPP QoS class over the S1-MME interface.
Product
MME
Privilege
Administrator
Syntax
s1-mme ip qos-dscp { af11 | af12 | af13 | af21 | af22 | af23 | af31 | af32 | af33 | af41 | af42 | af43 | be | ef }
default s1-mme ip qos-dscp
qos-dscp { af11 | af12 | af13 | af21 | af22 | af23 | af31 | af32 | af33 | af41 | af42 | af43 | be | ef }
Default: af11
Specifies the DSCP for the specified QoS traffic pattern. qos-dscp can be configured to any one of the following:
af11: Assured Forwarding 11 per-hop-behavior (PHB)
af12: Assured Forwarding 12 PHB
af13: Assured Forwarding 13 PHB
af21: Assured Forwarding 21 PHB
af22: Assured Forwarding 22 PHB
af23: Assured Forwarding 23 PHB
af31: Assured Forwarding 31 PHB
af32: Assured Forwarding 32 PHB
af33: Assured Forwarding 33 PHB
af41: Assured Forwarding 41 PHB
af42: Assured Forwarding 42 PHB
af43: Assured Forwarding 43 PHB
be: Best effort forwarding PHB
ef: Expedited forwarding PHB
Usage
DSCP levels can be assigned to specific traffic patterns in order to ensure that data packets are delivered according to the precedence with which they’re tagged. The diffserv markings are applied to the IP header of every subscriber data packet transmitted over the S1-MME interface(s).
Example
The following command sets the DSCP-level for data traffic sent over the S1-MME interface to af12:
s1-mme ip qos-dscp af12
 
s1-mme sctp port
This command configures the source SCTP port that will be used for binding the SCTP socket to communicate with the eNodeB using S1AP with this MME service.
Product
MME
Privilege
Administrator
Syntax
s1-mme sctp port port_num
default s1-mme sctp port
default
Sets the SCTP port to default value of 36412 to communicate with the eNodeBs using S1-MME interface.
port_num
Default: 36412
Specifies the SCTP port number to communicate with the eNodeBs using S1-MME interface.
port_num must be an integer between 1 through 65535.
Usage
Use this command to assign the SCTP port with SCTP socket to communicate with the eNodeB using S1AP.
A maximum of one SCTP port can be associated with one MME service.
Example
The following command sets the default SCTP port number 699 for to interact with eNodeB using S1AP on S1-MME interface:
default s1-mme sctp port
 
setup-timeout
This command configures the timeout duration for call setup of MME calls in this MME service.
Product
MME
Privilege
Administrator
Syntax
setup-timeout dur
default setup-timeout
default
Sets the call setup timeout duration to default value of 60 seconds.
dur
Default: 60
Specifies the call setup timeout duration for MME calls after which attempt will be discarded.
dur must be an integer between 1 through 10000.
Usage
Use this command to configured the timeout duration in seconds to setup an MME call with an MME service. One this duration exhausted Call setup procedure will be discarded with this MME service.
Example
The following command sets the default setup timeout duration of 60 seconds for MME calls:
default setup-timeout
 
snmp trap
Enables or disables the SNMP trap for S1 interface connection establishment.
Product
MME
Privilege
Administrator
Syntax
[ default | no ] snmp trap { s1-initial-establishment | s1-path-establishment }
default
Returns the command to it’s default setting of disabled.
no
Disables the SNMP trap.
s1-initial-establishment
Specifies that the SNMP trap for the initial S1 interface connection establishment is to be enabled or disabled.
s1-path-establishment
Specifies that the SNMP trap for the S1 path establishment is to be enabled or disabled.
Usage
Use this command to enable or disabled the SNMP trap for S1 interface connection establishment.
 
ue-db
This command configures the UE database which is maintained by MME as cache of EPS context per UE keyed by IMSI/GUTI to allow UE to attach by GUTI and reuse previously established security parameters. This cache will be maintained in each session manager where the first attach occurred for an UE.
Product
MME
Privilege
Administrator
Syntax
ue-db purge-timeout dur_mins
default ue-db purge-timeout
default
Resets the UE database purge timer timeout to the system default value of 10080 mins.
purge-timeout dur_mins
Default: 10080
Sets the timeout duration for MME to store UE database in cache memory.
This timer starts when UE goes in dormant.
dur_mins is timeout duration in minutes and must be an integer from 1 through 20160.
Usage
Use this command to set timeout duration for MME to hold UE database information in cache memory.
The MME DB acts as a cache for storing subscriber related information. This subscriber related information helps in reducing signaling traffic. The MME DB is a part of the Session Manager and interfaces between the Session Manager Application and Evolved Mobility Management Manager to provide access to the cached data.
Example
The following command configures the MME database cache timer to hold the UE information up to 7 days (10080 minutes) in MME Database:
default ue-db purge-timeout
 
 
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