5G Capable SPGW Selection by MME

Feature Summary and Revision History

Summary Data

Applicable Product(s) or Functional Area

MME

Applicable Platform(s)

  • ASR 5500

  • VPC-DI

  • VPC-SI

Default Setting

Enabled - Configuration Required

Related Changes in This Release

Not Applicable

Related Documentation

  • Command Line Interface Reference

  • MME Administration Guide

  • Statistics and Counters Reference

Revision History

Revision Details

Release

First introduced.

21.12.2

Feature Description

MME is enabled to select 5G capable and co-located SPGW during initial attach, and additional PDN and SGW relocation scenarios. When multiple entries are configured, selection of a candidate is based on weight.

Relationship to Other Features

For dynamic selection mechanism to select PGW-C+SMF, SGW-C+ SMF, Peer AMF with 5G UEs, refer to the configurations such as Configure PGW-C with SMF Combined under the Peer AMF Configuration section in the MME Administration Guide .

Configuring 5G Capable SPGW Selection by MME

This section provides information on the CLI commands to configure 5G capable SPGW selection by MME.

collocated-node, ue-usage-type in apn-profile mode

Use the following configuration to configure co-located-node/ue-usage-type for SPGW selection at MME. 

configure  
         apn-profile apn_profile_name  
            pgw-address ip_address  [ co-located-node  collocated_node_name  [ primary | secondary | weight  value  ] | [ ue-usage-type  ue_usage_type_value  [ collocated-node | primary | secondary | weight value  ] ] 
            no pgw-address [ collocated-node  collocated_node_name  ] [ ue-usage-type  ue_usage_type_value  collocated-node collocated_node_name  ]  
            end

NOTES:

  • no : Disables the following options.

  • collocated-node collocated_node_name : Configures the collocation name to select the co-located SPGW node IP addresses for MME. collocated_node_name must be string of size 1 to 255.

  • ue-usage-type ue_usage_type_value : Configures the ue-usage for the gateway. ue_usage_type_value must be an integer between 1 and 255.

  • weight value : Enter a weight for this address.value must be an integer from 1 and 100.

collocated-node, ue-usage-type in mme-service mode

Use the following configuration to configure collocated-node/ue-usage-type for SPGW selection at MME. 

configure 
    context context_name 
             mme-service mme_service_name  
                pgw-address ip_address  [ collocated-node  collocated_node_name [ weight  value  ] ] | [ ue-usage-type  ue_usage_type_value  [ collocated-node | weight value  ] ] 
                no pgw-address [ collocated-node  collocated_node_name  ] [ ue-usage-type  ue_usage_type_value  collocated-node collocated_node_name  ]  
                end

NOTES:

  • no : Disables the following options.

  • collocated-node collocated_node_name : Configures the collocation name to select the collocated S/PGW node IP addresses for MME. collocated_node_name must be a string of size 1 to 255.

  • ue-usage-type ue_usage_type_value : Configures the ue-usage for the gateway. ue_usage_type_value must be an integer between 1 through 255.

  • weight value : Enter a weight for this address.value must be an integer from 1 through 100.

collocated-node, ue-usage-type in lte-emergency-profile mode

Use the following configuration to configure collocated-node/ue-usage-type for SPGW selection at MME. 

configure  
         lte-policy   
            lte-emergency-profile lte_emergency_profile_name 
               pgw-address ip-address ip_address  protocol { both | gtp | pmip }   weight value  [ collocated-node collocated_node_name ] | [ ue-usage-type  ue_usage_type_value  [ collocated-node collocated_node_name  ] ]  
               no pgw-address ip-address ip_address [ collocated-node  collocated_node_name  ] [ ue-usage-type  ue_usage_type_value  collocated-node collocated_node_name  ]  
               end

NOTES:

  • no : Disables the following options.

  • collocated-node collocated_node_name : Configures the collocation name to select the collocated SPGW node IP addresses for MME. collocated_node_name must be an alphanumeric string of 1 through 255.

  • ue-usage-type ue_usage_type_value : Configures the ue-usage for the gateway. ue_usage_type_value must be an integer between 1 and 255.

  • weight value : Specifies the weight used for pgw selection.value must be an integer from 1 and 100.

collocated-node, ue-usage-type in tai-mgmt-obj mode

Use the following configuration to configure collocated-node/ue-usage-type for SPGW selection at MME. 

configure  
         lte-policy  
            tai-mgmt-db tai_mgmt_db_name  
               tai-mgmt-obj tai_mgmt_obj_name 
                  sgw-address ip_address  s5-s8-protocol { both | gtp | pmip } weight  value  [ attach-only | collocated-node  collocated_node_name  [ attach-only ]   ] | [ ue-usage-type  ue_usage_type_value  [ collocated-node   collocated_node_name [ attach-only ] ] ] 
                  no sgw-address ip_address  s5-s8-protocol { both | gtp | pmip } [ collocated-node  collocated_node_name  ] [ ue-usage-type  ue_usage_type_value  collocated-node collocated_node_name  ]  
                  end

NOTES:

  • no : Disables the following options.

  • attach-only : Specifies the SGW preference for SGW-relocation.

  • collocated-node collocated_node_name : Configures the collocated node name to select the collocated S/PGW node IP addresses. collocated_node_name must be an alphanumeric string of 1 through 255.

  • ue-usage-type ue_usage_type_value : Specifies the S-GW supported ue-usage-type. ue_usage_type_value must be an integer between 1 and 255.

  • weight value : Specifies the protocol supported by the SGW (GTP, PMIP or both). value must be an integer from 1 and 100.

Monitoring and Troubleshooting

This section provides information regarding show commands available to monitor and troubleshoot the 5G Capable SPGW Selection by MME feature.

Show Commands and Outputs

show mme-service name

The output of this command includes the following fields:

  • ue_usage_type

  • collocated_node


Important

"ue_usage_type" and "collocated_node" appears more than once based on number no of P-GW addresses configured.

show lte-policy tai-mgmt-db name

The output of this command includes the following fields:

  • ue-usage-type

  • collocated-node


Important

"ue_usage_type" and "collocated_node" appears more than once based on number no of S-GW addresses configured.

show apn-profile full name

The output of this command includes the following fields:

  • ue-usage-type

  • collocated-node


Important

"ue_usage_type" and "collocated_node" appears more than once based on number no of P-GW addresses configured.

show lte-policy lte-emergency-profile name

The output of this command includes the following fields:

  • ue-usage-type

  • collocated-node


Important

"ue_usage_type" and "collocated_node" appears more than once based on number no of P-GW addresses configured.