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 LTE/SAE network. This service works in conjunction with MME-HSS Service and eGTP Service.
 
 
apn
This command associates/disassociates an Access Point Name (APN) templates to use in MME service.
Product
MME
Privilege
Security Administrator, Administrator
Syntax
apnapn_name
no apnapn_name
no
Disassociates a previously associated APN template with this MME service.
apn_name
Specifies the name for a pre-configured APN template to associate with this MME service.
apn_name is a pre-configured APN template name in a context. For more information on APN template configuration, Refer apn command in Context Configuration Mode Commands chapter.
-noconfirm
Indicates that the command is to execute without any additional prompt and confirmation from the user.
Warning: If this keyword option is used with no apn apn_name command the APN named apn_name will be deleted with all active/inactive subscribers without prompting any warning or confirmation.
Usage
Use this command to associate a pre-configured APN template with an MME service.
The APN is a logical name for a packet data network and/or a service that the SGSN/GGSN supports access to.
Multiple APN templates can be associated with an MME service.
Example
The following command associates an APN template called isp1 to an MME service:
apn isp1
 
associate
This command associates/disassociates the supportive services like an Evolved GPRS Tunnelling Protocol (eGTP) service or an MME-HSS service with an MME service.
Product
MME
Privilege
Security Administrator, Administrator
Syntax
associate { egtp-serviceegtp_svc_name | mme-hss-service hss_svc_name} [ contextctx_name]
no associate { egtp-service | mme-hss-service }
no
Disassociates a previously associated eGTP service or MME-HSS 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 in a context to associate with this MME service. For more information on eGTP service, refer egtp-service command in Context Configuration Mode Commands chapter.
mme-hss-service hss_svc_name
Associates an MME-HSS service with MME service.
hss_svc_name specifies the name for a pre-configured MME-HSS service in a context to associate with this MME service. For more information on MME HSS service, refer mme-hss-service command in Context Configuration Mode Commands chapter.
context ctx_name
Specifies the specific context name where eGTP or MME-HSS service is configured. If this keyword is omitted, the named eGTP or MME-HSS service must be exist in the same context as the MME service.
ctx_name is name of the configured context of the eGTP or MME-HSS service 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 eGTP or MME-HSS service with an MME service.
The eGTP service provides eGTP-U and eGTP-C protocol interface support between EPS nodes. For more information on eGTP service and supported interface type, refer eGTP Service Configuration Mode Commands chapter in Command Line Interface Reference.
Important: Only one eGTP service can be associated to a service. The eGTP service should be configured prior to issuing this command.
The MME-HSS service provides S6a interface support on Diameter protocol between MME and HSS. For more information on MME-HSS service and other parameters, refer MME-HSS Service Configuration Mode Commands chapter in Command Line Interface Reference.
Important: Only one MME-HSS service can be associated to a service in this release. The eGTP service should be configured prior to issuing this command.
Caution: 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.
Example
The following command associates a pre-configured eGTP service called egtp1 in dst_ctx context to an MME service:
associate egtp-service egtp1 context dst_ctx
The following command associates a pre-configured MME-HSS service called hss1 in the same context as MME service to an MME service:
associate mme-hss-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
Security Administrator, Administrator
Syntax
bind s1-mme address address
no bind address
no
Removes a previously configured IP address use for binding the SCTP (local bind address) to communicate with the eNodeBs using S1-MME interface.
address
Specifies the IP address (address) in IPv4 or IPv6 notation for the interface configured as an S1-MME interface.
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: 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.
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 address 192.168.3.1
The following command disables a binding that was previously configured:
no bind s1-mme address
 
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
Security Administrator, Administrator
Syntax
dns { pgw | sgw } [ contextctx_name]
no dns { pgw | sgw }
no
Disassociates a previously associated context having DNS client service configured for DNS query to select P-GW or S-GW with this MME service.
pgw
This keyword associates the named context with DNS client service for DNS query for selection of P-GW with MME service.
sgw
This keyword associates the named context with DNS client service for DNS query for selection of S-GW with MME service.
context ctx_name
This optional keyword associates the specific context name where DNS client service is configured to select P-GW and/or S-GW for this MME service. If this keyword is omitted DNS client service must be configured in the same context as 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 P-GW or S-GW from and MME service. For more information on DNS Client service and support, refer DNS Client Service Configuration Mode Commands chapter in Command Line Interface Reference.
A maximum of one DNS client service for 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
Security Administrator, Administrator
Syntax
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: 5640
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: 5640
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: 5400
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: 10
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: 10
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: 5400
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.
Following tables describe the triggers and states for timers:
EPS mobility management timers – UE side
EPS mobility management timers – network side
EPS session management timers – UE side
EPS session management timers – Network side
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
 
end
Exits the current mode and returns to the Exec Mode.
Product
All
Privilege
Security Administrator, Administrator
Syntax
end
Usage
Change the mode back to the Exec mode.
 
encryption-algorithm-lte
This command configures the precedence for LTE encryption algorithms to use for security procedures through this MME service.
Product
MME
Privilege
Security Administrator, 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
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: Disabled
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: Disabled
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: 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: 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
 
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
Security Administrator, Administrator
Syntax
default esm {t3485-timeout|T3495-timeout}
default
Resets the specified Evolved Session Management timer timeout to the system default value.
t3485-timeout t3485_dur
Default: 6
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.
T3495-timeout t3495_dur
Default: 6
Sets the timeout duration for T3485 timer. This timer is used for default EPS bearer context deactivation procedure.
This timer starts when the MME sends 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
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
Security Administrator, Administrator
Syntax
exit
Usage
Return to the previous mode.
 
imei
This command sets the mobile equipment identity (MEI) query criteria with different attributes like IMEI and IMEI-SV for UE related procedures.
Product
MME
Privilege
Security Administrator, Administrator
Syntax
imei-query-type {none | imei | imei-sv}
default imei-query-type
default
Sets the UE query criteria to its default type of “none”.
imei
This keyword sets the MEI query type to IMEI. International Mobile Equipment Identity (IMEI) will be used as criteria for MEI query with this MME service.
imei-sv
This keyword sets the MEI query type to IMEI-SV. International Mobile Equipment Identity (IMEI) and software version (SV) will be used as criteria for MEI query with this MME service.
none
This keyword sets the MEI query type to “none”. Neither IMEI nor IMEI-SV will be used as criteria for MEI query with this MME service.
Usage
Use this command to MEI query criteria for UE related procedures with an MME service.
MME has to do following procedure with reference to MEI query:
Query type described with this command will be applicable for all above mentioned procedures.
Example
The following command sets the MEI query type to IMEI for UE related procedures:
imei-query-type imei
 
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
Security Administrator, Administrator
Syntax
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
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: Disabled
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.
Warning: Integrity algorithm is a mandatory aspect and can not be disabled in MME service.
Caution: 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: 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 location reporting functionality for UE on MME service.
Product
MME
Privilege
Security Administrator, 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 MME serivce.
Example
The following command sets the MME service to provide the location reporting functionality for UE:
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
Security Administrator, 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
Security Administrator, Administrator
Syntax
max-paging-attempt max_paging_retry
default max-paging-attempt
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-attempt 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
Security Administrator, 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 6
 
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
Security Administrator, 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: 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 of for the group of which this MME is belongs to.
grp_id must be an integer value from 0 through 65535.
mme-code mme_code
Specifies the unique code for this MME service.
mme_code must be an integer value from 0through 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: 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 1025 and MME code as 101 for this MME service.
mme-id group-id 1025 mme-code 101
 
nas-max-retransmission
This command sets the retransmission counter for all type of NAS messages in an MME service.
Product
MME
Privilege
Security Administrator, 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
This command specifies the Network Resource Identifier (NRI) stored in bit 17 to bit 23 of Globally Unique Temporary Identity (GUTI) to be retrieved by MME service.
Product
MME
Privilege
Security Administrator, Administrator
Syntax
nri length length [ value value]
no nri [ value ]
no
Removes the configured NRI value and location in GUTI for retrieval by this MME service.
length length
Specifies the length of bits to be used in the GUTI to retrieve NRI information. This starts from bit 23 to bit 17 of GUTI.
length must be an integer from 1 to 6.
value value
Specifies the value of NRI to retrieve from GUTI. This value should not exceed the maximum possible value for the specified bit length. For example, if length specified is 3 bit the value should not exceed 7 and if length specified is 5 the value should not exceed 31.
value must be an integer from 0 to 63.
Usage
Use this command to retrieve the NRI stored in GUTI bit 17 to bit 23.
Example
The following command specifies the length of NRI information as 5 bit and value to retrieve as 23 from GUTI:
nri length 5 value 23
 
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
Security Administrator, 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.
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
Security Administrator, 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: 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 101 through 998.
mnc mnc_value
Specifies the mobile network code (MNC) part of PLMN identifier.
mcc_value must be an integer value from 01 through 99 or 100 through 998.
Usage
Use this command to set the PLMN identifier for this MME service.
Caution: 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 idle-mode
This command configures the user-defined policies of session management for LTE subscriber in an MME service.
Product
MME
Privilege
Security Administrator, 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 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 MME when a PDN connection request to an already connected APN is being processed by MME service.
Product
MME
Privilege
Security Administrator, 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
 
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
Security Administrator, Administrator
Syntax
s1-mme sctp port port_num
default s1-mme sctp port
default
Sets the SCTP port to default value of 699 to communicate with the eNodeBs using S1-MME interface.
port_num
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
Security Administrator, 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
 
sgw-address
This command configures the Serving Gateway (S-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
Security Administrator, Administrator
Syntax
sgw-address address [ s5-s8-protocol pmip ] [ tai tac tac_value [ mcc mcc_value mnc mnc_value]] [ weight weight_value ]
no sgw-address address [ s5-s8-protocol pmip ] [ tai tac tac_value [ mcc mcc_value mnc mnc_value]]
no
Removes a previously configured IP address of S-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 S-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.
tai tac tac_value
Specifies the tracking area identifier (TAI) for S-GW. It configures the Tracking Area Code (TAC) for S-GW in MME service.
tac_value must be an integer from 1 through 268435455.
mcc mcc_value
Specifies the mobile country code (MCC) part of tracking area identifier.
mcc_value must be an integer value from 101 through 998.
mnc mnc_value
Specifies the mobile network code (MNC) part of tracking area identifier.
mcc_value must be an integer value from 01 through 998.
weight weight_value
Assigns the weight to P-GW address to use as a preferred S-GW.
weight_value must be an integer from 1 through 100. Lowest value has the least preference.
Usage
Use this command to configure the Serving Gateway (S-GW) addresses to use with MME service along with tracking area Identifier and tracking area code. This command also configures the S5 and S8 interface protocol type and priority and weight to share the load between associated S-GWs. A maximum of 16 S-GW addresses can be configured with this command.
This command only changes the use of protocol in S5 and S8 interface. By default S-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 S-GW(s) (that are operational) are totaled and then weighted round-robin selection is used to distribute new default bearer context among the S-GW(s) according to their weights.
Example
The following command associates the S-GW IP address of 192.168.3.1 to the MME service with S5 and S8 protocol as P-MIP along with tracking area code as 20 and weight as 90.
pgw-address 192.168.3.1 s5-s8-protocol pmip tai tac 20 weight 90
The following command removes the above configured S-GW IP address, P-MIP protocol setting, and other parameters:
no sgw-address 192.168.3.1s5-s8-protocol pmip tai tac 20
 
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
Security Administrator, 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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