Cisco Cisco ASR 5000 Guía Para Resolver Problemas
ASR5x00 MME Overload Protection Features
Document ID: 119002
Contributed by Albert Zagrobskiy, Cisco Advanced Services, and
Krishna Kishore DV, Cisco TAC Engineer.
Krishna Kishore DV, Cisco TAC Engineer.
Jun 12, 2015
Contents
Introduction
MME Protection
Network Overload Protection: Attach Rate Throttling
Network Overload Protection: Paging Throttling
Sample Configuration
Network Overload Protection: DDN Throttling (Serving GateWay Functionality, Protects MME)
Network Overload Protection: EGTP Path Failure Throttling
Sample Configuration
Enhanced Congestion Control
Congestion Condition Thresholds
Thresholds and Tolerance Levels
Service Control CPU Thresholds
System CPU Thresholds
System Memory Thresholds
Related Information
MME Protection
Network Overload Protection: Attach Rate Throttling
Network Overload Protection: Paging Throttling
Sample Configuration
Network Overload Protection: DDN Throttling (Serving GateWay Functionality, Protects MME)
Network Overload Protection: EGTP Path Failure Throttling
Sample Configuration
Enhanced Congestion Control
Congestion Condition Thresholds
Thresholds and Tolerance Levels
Service Control CPU Thresholds
System CPU Thresholds
System Memory Thresholds
Related Information
Introduction
This document highlights the various Mobility Management Entity (MME) overload protection methods and
features available on the Cisco Aggregation Services Router (ASR) 5000 Series. In the ASR 5000 Series,
Cisco gives the customer various means to achieve control and this article explains the features and related
CLI commands.
features available on the Cisco Aggregation Services Router (ASR) 5000 Series. In the ASR 5000 Series,
Cisco gives the customer various means to achieve control and this article explains the features and related
CLI commands.
MME Protection
Network Overload Protection: Attach Rate Throttling
Attach Rate Throttling protects neighbor Network Elements such as Home Subscriber Server (HSS), Policy
and Charging Rules Function (PCRF), and Online Charging Server (OCS), and internal MME resources such
as imsimgr and sessmgr. Attach Rate Throttling processes the new calls that arrive to imsimgr, such at
Attaches and Inter−MME/Serving GPRS Supporting Node (SGSN) Tracking Area Update (TAUs).
and Charging Rules Function (PCRF), and Online Charging Server (OCS), and internal MME resources such
as imsimgr and sessmgr. Attach Rate Throttling processes the new calls that arrive to imsimgr, such at
Attaches and Inter−MME/Serving GPRS Supporting Node (SGSN) Tracking Area Update (TAUs).
This picture shows the message flow for calls and throttling queues.