Ultra Cloud Core 5G Access and Mobility Management Function, Release 2022.03
About this Guide
Conventions Used
Contacting Customer Support
UCC 5G AMF - Release Change Reference
Feature Defaults Quick Reference
Features and Behavior Change Quick Reference
Upgraded Kubernetes Version
Feature Summary and Revision History
Summary Data
Revision History
Feature Description
About AMF
5G Architecture
Overview
Control Plane Network Functions
User Plane Network Function
Subscriber Microservices Infrastructure Architecture
Control Plane Network Function Architecture
5G AMF Overview
Product Description
Use Cases and Features
4G EPC Interworking with N26
AN Release Procedure
Base AMF Configuration
CMAS Support
Encryption and Integrity Protection
Handover Procedure
Lawful Intercept
NRF Register/Discovery
OAM Support
PDU Session Establishment
PDU Session Modification
PDU Session Release
Redundancy Support
Roaming and Restriction Support
Service Request Procedure
SMS over NAS
UE Configuration Update Procedure
Deregistration
Registration
Deployment Architecture and Interfaces
AMF Architecture
AMF Deployment
Supported Interfaces
Life Cycle of Control Plane Message
License Information
Standards Compliance
Limitations
Deploying and Configuring AMF through Ops Center
Feature Summary and Revision History
Summary Data
Revision History
Feature Description
AMF Ops Center
Prerequisites
AMF Sysctl Tuning Parameters and Hyperthreading Enable
Deploying and Accessing AMF
Deploying AMF
Accessing the AMF Ops Center
Configuring Ops Center
Sample Configuration
Post Configuration Check
Pods and Services Reference
Feature Summary and Revision History
Summary Data
Revision History
Feature Description
Pods
Services
Open Ports and Services
Associating Pods to the Nodes
Viewing the Pod Details and Status
States
Viewing the Service Details
Smart Licensing
Feature Summary and Revision History
Summary Data
Revision History
Smart Software Licensing
Cisco Software Central
Smart Accounts and Virtual Accounts
Requesting a Cisco Smart Account
AMF Smart Licensing
Software Tags and Entitlement Tags
Configuring Smart Licensing
Users with Access to CSC
Users without Access to CSC
OAM Support
AMF Authentication and GUTI Reallocation Configuration Control
Feature Summary and Revision History
Summary Data
Revision History
Feature Description
Feature Configuration
Configuration Example
Configuration Verification
Bulk Statistics and MME Equivalent KPI Support
Feature Summary and Revision History
Summary Data
Revision History
Feature Description
How it Works
OAM Support
Bulk Statistics Support
AMF Rolling Software Upgrade
Feature Summary and Revision History
Summary Data
Revision History
Feature Description
Upgrading AMF
Rolling Software Upgrade for AMF
Rolling Software Upgrade Using the SMI Cluster Manager
Prerequisites
AMF Health Check
Performing the Deployment File Back Up
Performing the Ops Center Configuration Back Up
Performing CEE Back Up and AMF Ops Center Configuration
Staging a New AMF Image
Triggering the Rolling Software Upgrade
Monitoring the Upgrade
Viewing the Pod Details
Application-based Alerts
Feature Summary and Revision History
Summary Data
Revision History
Feature Description
How it Works
Configuring the Alert Rules
Configuration Example
Configuration Verification
Viewing Alert Logger
Call Flow Procedure Alerts
Paging Success
Service Request Success
UE Deregistration Success
UE Registration Success
Message Level Alerts
N1 Registration Accept
N1 Service Accept
N1 UE Initiated Deregistration
N1 Network Initiated Deregistration
N2 ICSR Success
N2 PDU Setup Success
N2 PDU Modify Success
N2 PDU Release Success
N8 UECM Registration Request
N8 UECM Deregistration Request
N8 SDM Data Request
N8 SDM Subscription Request
N8 SDM Unsubscribe Request
N8 PCSCF Restoration Request
N11 SM Create
N11 SM Release
N11 SM Update
N12 UeAuth Req
N15 AM Policy Control Create
N15 AM Policy Control Delete
CDL for Multiple AMF Instances
Feature Summary and Revision History
Summary Data
Revision History
Feature Description
Architecture
Feature Configuration
Configuring the CDL in same namespace as AMF
Configuration Example
Configuring the CDL in different namespace as AMF
Configuration Example
CMAS Service Support
Feature Summary and Revision History
Summary Data
Revision History
Feature Description
How it Works
Call Flows
CMAS Subscription, Message Delivery, and Notification Call Flow
Non-UE N2 Messages Subscription Call Flow
Non-UE N2 Messages Transfer Call Flow
Non-UE Message Notification Call Flow
Non-UE Notification Subscription Deletion Call Flow
Compliance to 3GPP Specifications
Feature Summary and Revision History
Summary Data
Revision History
Feature Description
Standards Compliance
How it Works
Call Flows
UE Registration
Initial Registration Request Call Flow
Mobility Updating or Periodic Registration without AMF Change Call Flow
PDU Session Establishment Call Flow
PDU Session Establishment with Initial Context Call Flow
PDU Session Establishment for Existing PDU Call Flow
PDU Session Modification
UE-Initiated PDU Session Modification Call Flow
SMF-Initiated PDU Session Modification Call Flow
PDU Session Release
UE-Initiated PDU Session Release Call Flow
SMF-Initiated PDU Release Call Flow
UE-Initiated Deregistration Call Flow
UDM-Initiated Deregistration Call Flow
AMF-Initiated Deregistration Call Flow
UE Identity Procedure for Authentication Failure Call Flow
UE Identity Procedure for Unknown Subscribers Call Flow
Configuring Compliance to 3GPP Specification
Configuring Interfaces
Sample Configuration
Dynamic Configuration Change Support for SCTP and SBI Endpoints
Feature Summary and Revision History
Summary Data
Revision History
Feature Description
Feature Configuration
Configuring the SCTP Endpoint
Configuration Example
Configuring the SCTP VIP-IP Port Removal
Configuring the SBI Endpoint
Configuring the Endpoint
Configuration Example
Configuring AMF Registration with NRF
Configuring the Trigger to NRF Profile Update
Configuring the TAI Addition and Removal
Configuring the Slice Addition
Configuring the Slice Removal
Configuring the Internal VIP-IP for the UDP Proxy
EAP and AKA Authentication
Feature Summary and Revision History
Summary Data
Revision History
Feature Description
How it Works
Call Flows
EAP-AKA'-based Authentication Call Flow
Encryption and Integrity Protection
Feature Summary and Revision History
Summary Data
Revision History
Feature Description
How it Works
Call Flows
UE Registration with Encryption/Integrity Protection Call Flow
UE Access and Authentication Request Call Flow
Feature Configuration
Configuration Example
OAM Support
Bulk Statistics Support
Evolved Packet System Fallback Support
Feature Summary and Revision History
Summary Data
Revision History
Feature Description
Feature Configuration
Configuration Example
Failure and Error Handling Support
Feature Summary and Revision History
Summary Data
Revision History
Feature Description
How it Works
Error Handling on SBI Interface
SBI Message Validation
Error handling on NGAP and NAS
Local Cause Code Mapping
Feature Configuration
Configuring the Local Cause Code Mapping at Global Configuration
Configuration Example
Configuring the Local Cause Code Mapping under Call Control Policy
Configuration Example
Configuring the Local Cause Code Mapping under AMF Service
Configuration Example
Failure Handling Template
Configuring the Response Timeout at Endpoint
Configuration Example
Configuration Verification
Configuring the Response timeout at Failure Profile
Configuration Example
Configuration Verification
Behavior for Multiple Failure Cause Code Configuration
Failure/Exception Handling Framework Support
Feature Summary and Revision History
Summary Data
Revision History
Support for Failure/Exception Handling Framework
Error Handling on UDM Interface
SDM Errors
UECM Errors
Error Handling on AUSF Interface
Internal Errors on UDM/AUSF Interfaces
Error Handling for Protocol Data – NAS
High Availability Services
Feature Summary and Revision History
Summary Data
Revision History
Feature Description
AMF High Availability Service
Feature Description
NGAP and NAS High Availability Service
Feature Description
Feature Configuration
Configuration Example
SCTP High Availability Service
Feature Description
Feature Configuration
Configuration Example
IPv6 Support on SBI Interface
Feature Summary and Revision History
Summary Data
Revision History
Feature Description
Feature Configuration
Configuration Example
Idle Entry Procedure
Feature Summary and Revision History
Summary Data
Revision History
Feature Description
How it Works
Call Flows
gNB-Initiated UE Context Release Procedure Call Flow
UE or NW-Initiated Deregistration followed by UE Release Procedure Call Flow
Internode Registration Support
Feature Summary and Revision History
Summary Data
Revision History
Feature Description
Internode Initial Registration
Feature Description
How it Works
Call Flows
Identification with Peer Node Call Flow
Limitations
Internode Mobility Registration
Feature Description
Idle Mode Registration from Peer MME to AMF
Feature Description
How it Works
Call Flows
Idle Mode Registration to AMF from MME Call Flow
AMF to MME Idle Mode Handoff
Feature Description
How it Works
Call Flows
AMF to MME Idle Mode Handoff Call Flow
Registration with AMF Change
Feature Description
REST Endpoint
How it Works
Call Flows
Registration with AMF Change Call Flow
Limitations
OAM Support
Bulk Statistics Support
Low Mobility Handover (Xn/N2)
Feature Summary and Revision History
Summary Data
Revision History
Feature Description
How It Works
Call Flows
N2 Handover Cancel Call Flow
Mobile Equipment Identity Check Procedures
Feature Summary and Revision History
Summary Data
Revision History
Feature Description
How it Works
Call Flows
UE Identity Procedure for Authentication Failure Call Flow
UE Identity Procedure for Unknown GUTI Registration Call Flow
Multiple AMF Instances Support
Feature Summary and Revision History
Summary Data
Revision History
Feature Description
Considerations
Feature Configuration
Configuring the AMF Instance ID
Associating the AMF Instances to CDL
Configuring the CDL Notifications
Troubleshooting Information
N1N2 Message Transfer
Feature Summary and Revision History
Summary Data
Revision History
Feature Description
How it Works
Call Flows
N1N2 Message Transfer Request Call Flow
N2 Handover Procedure
Feature Summary and Revision History
Summary Data
Revision History
Feature Description
N2 Handover without AMF Change
Feature Description
How it Works
Call Flows
N2 Handover without AMF Change Call Flow
N2 Handover with AMF Change
Feature Description
How it Works
Call Flows
N2 Handover with AMF Change Call Flow
N26 Stack Integration Support
Feature Summary and Revision History
Summary Data
Revision History
Feature Description
UDP Proxy and GTPC Endpoint
Feature Description
EBI Allocation and Reallocation Support
Feature Description
Standard Compliance
Limitations
How it Works
Call Flows
N26-based Handover Procedures - EPC Interworking
Feature Summary and Revision History
Summary Data
Revision History
Feature Description
How it Works
Call Flows
5G to 4G Handover Call Flow
4G to 5G Handover Call Flow
Standards Compliance
Limitations
Feature Configuration
Configuring the Handover from 4G to 5G
Configuration Example
Configuring the Handover from 5G to 4G
Configuration Example
Enhancing NRF Functionalities
Feature Summary and Revision History
Summary Data
Revision History
Feature Description
How it Works
OAM Support
Statistics Support
Troubleshooting Information
Trouble Ticket Content Data Collection
Network-Initiated Deregistration Request
Feature Summary and Revision History
Summary Data
Revision History
Feature Description
How it Works
Call Flows
Purge of Subscriber Data Call Flow
Feature Configuration
Configuration Example
Node Manager Endpoint Onboarding Support
Feature Summary and Revision History
Summary Data
Revision History
Feature Description
Feature Configuration
Paging Support
Feature Summary and Revision History
Summary Data
Revision History
Feature Description
Paging Initiation
Selecting a Paging Profile
Paging Procedure
Feature Configuration
Configuring the Operator Policy
Configuration Example
Configuration Verification
Configuring the Paging Map
Configuration Example
Configuration Verification
Configuring the Paging Profile
Configuration Example
Configuration Verification
Configuring the Paging Algorithm
Configuration Example
Configuration Verification
Configuring the Paging Priority
Configuration Example
Configuration Verification
AMF Paging Configuration Example
gNB-Initiated Reset Procedure
Feature Summary and Revision History
Summary Data
Revision History
Feature Description
How it Works
Periodic Registration Support
Feature Summary and Revision History
Summary Data
Revision History
Feature Description
How it Works
Call Flows
Periodic Registration without Authentication Call Flow
Periodic Registration with Authentication Call Flow
Feature Configuration
Configuring the T3512 Timer
Configuring Authentication Enable
OAM Support
Bulk Statistics Support
Retrieving IMEI from the UE
Feature Summary and Revision History
Summary Data
Revision History
Feature Description
How it Works
Call Flows
Registration Procedure Call Flow
Idle or Connected Mode Mobility Call Flow
Standards Compliance
Viewing the Retrieved IMEI
OAM Support
Bulk Statistics Support
Roaming Support
Feature Summary and Revision History
Summary Data
Revision History
Feature Description
Home Routed Roaming Support
Feature Description
How it Works
Call Flows
N9 Home Routed Roaming Call Flow
S8 Home Routing Call Flow
Standards Compliance
Feature Configuration
Configuring the LBO
Configuration Example
Configuring the MNC bits in SUPI
Configuration Example
Configuration Verification
Configuring the GUAMI for AMF Selection
Configuration Verification
Configuring the 5GC Inter-PLMN Roaming
SCTP Multihoming and Stack Parameters Support
Feature Summary and Revision History
Summary Data
Revision History
Stream Control Transmission Protocol (SCTP) Multihoming
Feature Description
Limitations
SCTP Multihoming and Stack Parameters Support
Feature Description
How it Works
Feature Configuration
Configuring Multiple SCTP and Protocol Pod Pairs
Configuration Example
Configuration Verification
Configuring SCTP Endpoint Parameters
Configuration Example
Configuration Verification
Service Request Procedure
Feature Summary and Revision History
Summary Data
Revision History
Feature Description
Limitations
How it Works
Call Flows
UE Triggered Service Request
Idle Mode Call Flow
Connected Mode Call Flow
OAM Support
Statistics
Session Timers
Feature Summary and Revision History
Summary Data
Revision History
Feature Description
How it Works
Call Flows
T3502 Call Flow
T3512 Call Flow
T3522 Call Flow
T3550 Call Flow
T3555 Call Flow
T3560 Call Flow
T3570 Call Flow
Tidle Timer Call Flow
Procedural Timer Call Flow
Standards Compliance
Feature Configuration
Configuring the 3GPP Timers
Configuring the Non-3GPP Timers
Configuring the IDLE Timer
Configuration Example
Configuring the Procedural Timer
Configuration Example
SMF Feature Updates without SMF IEs
Feature Summary and Revision History
Summary Data
Revision History
Feature Description
Feature Configuration
Configuration Example
SMS over the Non-Access Stratum Procedures
Feature Summary and Revision History
Summary Data
Revision History
Feature Description
How it Works
Notifications using the UE Configuration Update Command
Paging
Failure Handling
Standards Compliance
Limitations
Feature Configuration
Configuring AMF to send SMS over NAS
Configuring NRF Discovery for SMSF
Configuring Failure Handling
Configuring the Paging Profile
Configuring Paging for the UDM Notifications
Configuring the Time Zone
Configuration Example
Configuration Example
S-NSSAI based SMF Selection
Feature Summary and Revision History
Summary Data
Revision History
Feature Description
Feature Configuration
Configuration Example
Configuration Verification
Steering of Roaming, Roaming Restrictions, and Operator Policy Support
Feature Summary and Revision History
Summary Data
Revision History
Feature Description
Relationships
Feature Configuration
Steering of Roaming
How it Works
Call Flows
SOR During the UE Registration Call Flow
SOR After the UE Registration Call Flow
Standards Compliance
Limitations
Feature Configuration
Configuring the Core Network Type Restriction
Configuring the 5GC Inter-PLMN Roaming
Configuring the Idle Mode for Steering
OAM Support
Statistics for Steering
Roaming Restriction and Operator Support
How it Works
Standards Compliance
Limitations
Relationships
UDM Subscription
RAT Restrictions
Core Network Type Restrictions
Local Cause Code Mapping
Core Network Type Restriction
RAT Type Restriction
Restrictions Enforcement at AMF
Enforcement during or after Registration
Enforcement during Mobility
Enforcement at AMF for Emergency PDU
Enforcement at N26 Call Flow
Enforcement at Idle Mode Handling from UDM
Mobility Restriction IEs
Feature Configuration
Configuring the RAT Restriction
Configuring the RAT Type Restriction
OAM Support
Roaming Restriction Statistics
Operator Policy
How it Works
Call Flows
Initial Registration Call Flow
Relationships
Subscriber Maps
Operator Policy Selection
Feature Configuration
Configuring under AMF Services
Configuring RAT Restrictions under Call Control Policy
Configuring Core Network Restrictions under Call Control Policy
Subscription Concealed Identifier Profile
Feature Summary and Revision History
Summary Data
Revision History
Feature Description
Feature Configuration
Configuration Example
TLS Transport Support
Feature Summary and Revision History
Summary Data
Revision History
Feature Description
Feature Configuration
Configuring the Client Certificates
Configuring the Server Certificates
Enabling the TLS
Configuration Verification
Troubleshooting Information
Trouble Ticket Data Collection
UE Context Transfer Support
Feature Summary and Revision History
Summary Data
Revision History
Feature Description
How It Works
Call Flows
UE Context Transfer Call Flow
Limitations
Feature Configuration
Configuration Example
UE Configuration Management Procedures
Feature Summary and Revision History
Summary Data
Revision History
Feature Description
How it Works
TAI List Changes
Call Flows
Sending the New GUTI to UE Call Flow
UE Configuration Update Call Flow
UDM Notification Interaction Call Flow
Standards Compliance
Configuring Support for UE Configuration Update Command
Configuring New GUTI Allocation
Enabling UE Configuration Update
Configuring Paging
Configuring the Paging Feature
Configuring the Paging Profile
Configuring AMF to Page the New TAI List
Configuring the T3555 Timer
Enabling the Tidle Timer for Inactive UEs in the Connected Mode
OAM Support
Statistics
VoNR Support
Feature Summary and Revision History
Summary Data
Revision History
Feature Description
Voice over New Radio (VoNR) Support
Feature Description
How it Works
Call Flows
Initial or Mobility Registration—IMS VoNR Support Procedure Call Flow
Provide UE Information for Terminating Domain Selection Call Flow
Standards Compliance
Limitations
Feature Configuration
Configuring Support to Indicate IMS VoPS Support
Configuring the TAL-level IMS VoPS
OAM Support
Statistics
Emergency Services
Feature Description
How it Works
Call Flows
Node-level Call Flow
Standards Compliance
Limitations
Feature Configuration
Configuring Emergency Profile
Associating the Emergency Profile with the AMF Services or Global Configuration
Configuration Verification
PDN Creation, Modification, and Release
Feature Description
How it Works
Standards Compliance
Call Flows
SM Context Update Call Flow
Feature Configuration
Configuring the PCSF Restoration Feature
Configuring the IMS for DNN
Configuring the Query Selection Parameter
Xn Handover
Feature Summary and Revision History
Summary Data
Revision History
Feature Description
Supported Scenarios
How it Works
Call Flows
Xn Handover Call Flow
OAM Support
Bulk Statistics Support
Troubleshooting
Using CLI Data
show subscriber
clear subscriber
Logs
Feature Description
Error
Warn
Info
Debug
Trace
How it Works
Log Tags
Frequently Encountered Scenarious
Geo-Replication Pod in Pending State
Sample AMF Configuration
Sample AMF Configuration
Sample Configuration